{"id":10963,"date":"2024-10-08T12:06:00","date_gmt":"2024-10-08T04:06:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=10963"},"modified":"2024-11-21T10:40:26","modified_gmt":"2024-11-21T02:40:26","slug":"grade-301","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/grades\/grade-301\/","title":{"rendered":"Th\u00e9p kh\u00f4ng g\u1ec9 301: \u0110\u1ecbnh ngh\u0129a, Th\u00e0nh ph\u1ea7n, T\u00ednh ch\u1ea5t, X\u1eed l\u00fd, \u1ee8ng d\u1ee5ng v\u00e0 Th\u00eam th\u00f4ng tin"},"content":{"rendered":"

T\u1eadp \u0111o\u00e0n SteelPRO<\/em><\/strong> Hi\u1ec7n t\u1ea1i, kho c\u00f3 c\u00e1c s\u1ea3n ph\u1ea9m SS 301 (UNS S30100): t\u1ea5m, l\u00e1, cu\u1ed9n, d\u1ea3i, \u1ed1ng, \u1ed1ng tr\u00f2n, thanh, que, d\u00e2y, v.v. Ngo\u00e0i ra, c\u00f2n c\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n \u0111\u1ec3 b\u1ea1n l\u1ef1a ch\u1ecdn: S\u1ed1 1, 2B, 2D, BA, S\u1ed1 3, S\u1ed1 4, HL, S\u1ed1 8, Phun bi, v.v. <\/em><\/strong><\/p>

Ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng 100%. Kh\u00f4ng c\u00f3 s\u1ea3n ph\u1ea9m l\u1ed7i n\u00e0o \u0111\u01b0\u1ee3c giao \u0111\u1ebfn kh\u00e1ch h\u00e0ng c\u1ee7a ch\u00fang t\u00f4i. <\/em><\/strong>Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/em><\/strong><\/a> \u0111\u1ec3 t\u00f9y ch\u1ec9nh h\u00ecnh th\u1ee9c mong mu\u1ed1n c\u1ee7a s\u1ea3n ph\u1ea9m, bao g\u1ed3m h\u00ecnh d\u1ea1ng, t\u00ecnh tr\u1ea1ng, b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n, c\u00e1ch x\u1eed l\u00fd, v.v.<\/em><\/strong><\/p>

T\u1ed5ng quan v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 301<\/h2>

Th\u00e9p kh\u00f4ng g\u1ec9 301 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 austenit c\u01b0\u1eddng \u0111\u1ed9 cao trong d\u00f2ng 300, ch\u1ee7 y\u1ebfu bao g\u1ed3m crom 16-18% v\u00e0 niken 6-8%. N\u00f3 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM A240 v\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c c\u1ea5p nh\u01b0 1.4310 (EN).\u00a0<\/p>

301 c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m c\u1ee9ng tuy\u1ec7t v\u1eddi, trong \u0111\u00f3 \u0111\u1ed9 b\u1ec1n t\u0103ng \u0111\u00e1ng k\u1ec3 th\u00f4ng qua qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c ngu\u1ed9i. \u0110i\u1ec1u n\u00e0y c\u0169ng d\u1eabn \u0111\u1ebfn t\u1eeb t\u00ednh m\u1ed9t ph\u1ea7n, t\u00f9y thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 c\u00e1n ngu\u1ed9i. 301 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t nh\u01b0ng th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi c\u1ea5p 304. <\/p>

V\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa kh\u1ea3 n\u0103ng t\u1ea1o h\u00ecnh v\u00e0 \u0111\u1ed9 b\u1ec1n, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u00f2 xo, \u1ed1c v\u00edt, ph\u1ee5 t\u00f9ng \u00f4 t\u00f4, toa xe l\u1eeda, b\u0103ng t\u1ea3i v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n trang tr\u00ed.<\/p>

Kh\u00f4ng gi\u1ed1ng nh\u01b0 th\u00e9p martensitic, th\u00e9p kh\u00f4ng g\u1ec9 301 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng b\u1eb1ng c\u00e1ch x\u1eed l\u00fd nhi\u1ec7t m\u00e0 ch\u1ec9 c\u00f3 th\u1ec3 l\u00e0m c\u1ee9ng b\u1eb1ng c\u00e1ch c\u00e1n ngu\u1ed9i.<\/p>

\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h3>
Ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/strong><\/td>\u1ee8ng d\u1ee5ng<\/strong><\/td><\/tr>
\u00d4 t\u00f4<\/td>Linh ki\u1ec7n \u1ed1ng x\u1ea3, l\u00f2 xo, k\u1eb9p, vi\u1ec1n<\/td><\/tr>
H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/td>Ch\u1ed1t, l\u00f2 xo, t\u1ea5m k\u1ebft c\u1ea5u, k\u1eb9p<\/td><\/tr>
Thi\u1ebft b\u1ecb y t\u1ebf<\/td>D\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt, d\u1ee5ng c\u1ee5 nha khoa, kim, k\u1eb9p<\/td><\/tr>
Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/td>B\u0103ng t\u1ea3i, b\u1ed3n ch\u1ee9a, thi\u1ebft b\u1ecb tr\u1ed9n, ph\u1ec5u<\/td><\/tr>
H\u00e0ng ti\u00eau d\u00f9ng<\/td>\u0110\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp, \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp, b\u1ed3n r\u1eeda, l\u00f2 xo<\/td><\/tr>
\u0110i\u1ec7n t\u1eed<\/td>\u0110\u1ea7u n\u1ed1i, l\u00f2 xo, gi\u00e1 \u0111\u1ee1, t\u1ea5m ch\u1eafn<\/td><\/tr>
S\u1ef1 thi c\u00f4ng<\/td>H\u1ed7 tr\u1ee3 k\u1ebft c\u1ea5u, \u1ed1c v\u00edt, m\u00e1i nh\u00e0, khung c\u1eeda s\u1ed5<\/td><\/tr>
H\u00e0ng h\u1ea3i<\/td>L\u00f2 xo, \u1ed1c v\u00edt, m\u00e1y b\u01a1m, van<\/td><\/tr><\/tbody><\/table><\/figure>

\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h3>

Sau \u0111\u00e2y l\u00e0 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 l\u1ee3i \u00edch c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301:<\/p>

  1. \u0110\u1ed9 b\u1ec1n cao sau khi gia c\u00f4ng ngu\u1ed9i, l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n \u0111\u1ed9 b\u1ec1n cao.<\/li>\n\n
  2. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi trong m\u00f4i tr\u01b0\u1eddng nh\u1eb9, mang l\u1ea1i th\u1eddi gian s\u1eed d\u1ee5ng l\u00e2u d\u00e0i.<\/li>\n\n
  3. C\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh v\u00e0 \u0111\u1ed9 d\u1ebbo t\u1ed1t, th\u00edch h\u1ee3p cho c\u00e1c qu\u00e1 tr\u00ecnh u\u1ed1n v\u00e0 t\u1ea1o h\u00ecnh.<\/li>\n\n
  4. Ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 c\u1ea5p cao h\u01a1n.<\/li>\n\n
  5. Nh\u1eb9 h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i kh\u00e1c, gi\u00fap gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m.<\/li><\/ol>

    Sau \u0111\u00e2y l\u00e0 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301:<\/p>

    1. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n h\u1ea1n ch\u1ebf trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u00e0 gi\u00e0u clorua.<\/li>\n\n
    2. C\u00f3 th\u1ec3 m\u1ea5t \u0111i m\u1ed9t ph\u1ea7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n sau khi l\u00e0m ngu\u1ed9i.<\/li>\n\n
    3. Kh\u00f4ng ch\u1ecbu nhi\u1ec7t t\u1ed1t nh\u01b0 c\u00e1c lo\u1ea1i kh\u00e1c, h\u1ea1n ch\u1ebf kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n\n
    4. D\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng khi gia c\u00f4ng, khi\u1ebfn vi\u1ec7c gia c\u00f4ng tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n theo th\u1eddi gian.<\/li>\n\n
    5. \u00cdt c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t do \u1ee9ng su\u1ea5t h\u01a1n so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 h\u1ee3p kim cao h\u01a1n.<\/li><\/ol>

      C\u00e1c c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h3>
      Qu\u1ed1c gia\/Khu v\u1ef1c<\/strong><\/td>Ti\u00eau chu\u1ea9n\/\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/strong><\/td>L\u1edbp t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/strong><\/td><\/tr>
      Qu\u1ed1c t\u1ebf<\/td>Ti\u00eau chu\u1ea9n ISO15510<\/td>X9CrNi18-8<\/td><\/tr>
      Li\u00ean minh ch\u00e2u \u00c2u<\/td>EN 10088-1<\/td>X10CrNi18-8 (1.4310)<\/td><\/tr>
      Hoa K\u1ef3<\/td>Ti\u00eau chu\u1ea9n ASTMA240<\/td>301<\/td><\/tr>
      \u0110\u1ee9c<\/td>DIN 17440, WNr<\/td>X12CrNi17-7<\/td><\/tr>
      Nh\u1eadt B\u1ea3n<\/td>Ti\u00eau chu\u1ea9n JIS G4305<\/td>SUS301<\/td><\/tr>
      Anh<\/td>BS 1449-2<\/td>301S21, 302S26<\/td><\/tr>
      Ph\u00e1p<\/td>AFNOR NF A35-572<\/td>Z11CN18-08, Z12CN18-09<\/td><\/tr>
      Th\u1ee5y \u0110i\u1ec3n<\/td>Th\u1ee9 3 tu\u1ea7n 14 23 31<\/td>2331<\/td><\/tr><\/tbody><\/table><\/figure>

      C\u00e1c bi\u1ebfn th\u1ec3 ph\u1ed5 bi\u1ebfn c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h3>
      Kh\u00e1c nhau<\/strong><\/td>\u0110\u00f3 l\u00e0 g\u00ec?<\/strong><\/td>T\u1ea1i sao l\u1ea1i ch\u1ecdn n\u00f3 thay v\u00ec 301?<\/strong><\/td>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr>
      301L<\/td>Phi\u00ean b\u1ea3n \u00edt carbon<\/td>Kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t h\u01a1n, gi\u1ea3m l\u01b0\u1ee3ng k\u1ebft t\u1ee7a cacbua.<\/td>C\u00e1c b\u1ed9 ph\u1eadn k\u1ebft c\u1ea5u, thi\u1ebft b\u1ecb h\u00f3a ch\u1ea5t.<\/td><\/tr>
      301LN<\/td>Phi\u00ean b\u1ea3n t\u0103ng c\u01b0\u1eddng nit\u01a1<\/td>\u0110\u1ed9 b\u1ec1n cao h\u01a1n, kh\u1ea3 n\u0103ng t\u1ea1o h\u00ecnh t\u1ed1t.<\/td>Linh ki\u1ec7n \u00f4 t\u00f4, \u0111\u01b0\u1eddng s\u1eaft.<\/td><\/tr>
      301H<\/td>Phi\u00ean b\u1ea3n carbon cao<\/td>C\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/td>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, thi\u1ebft b\u1ecb nhi\u1ec7t \u0111\u1ed9 cao.<\/td><\/tr>
      301J1<\/td>Phi\u00ean b\u1ea3n b\u1ed5 sung \u0111\u1ed3ng<\/td>T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng t\u1ea1o h\u00ecnh v\u00e0 \u0111\u1ed9 d\u1ebbo.<\/td>Thi\u1ebft b\u1ecb gia d\u1ee5ng, \u0111\u1ed3 trang tr\u00ed.<\/td><\/tr>
      301Si<\/td>Phi\u00ean b\u1ea3n b\u1ed5 sung silicon<\/td>Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/td>L\u00f2 s\u01b0\u1edfi, h\u1ec7 th\u1ed1ng x\u1ea3.<\/td><\/tr><\/tbody><\/table><\/figure>

      Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h2>

      Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/h3>

      Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t. N\u00f3 c\u00f3 th\u1ec3 ch\u1ed1ng oxy h\u00f3a l\u00ean \u0111\u1ebfn 840\u00b0C (1544\u00b0F) khi s\u1eed d\u1ee5ng trong th\u1eddi gian ng\u1eafn v\u00e0 900\u00b0C (1652\u00b0F) khi s\u1eed d\u1ee5ng li\u00ean t\u1ee5c. Tuy nhi\u00ean, ti\u1ebfp x\u00fac l\u00e2u d\u00e0i v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n v\u00e0 d\u1eabn \u0111\u1ebfn nh\u1ea1y c\u1ea3m v\u00e0 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf c\u00e1c khu v\u1ef1c h\u00e0n. N\u00f3 \u00edt ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao so v\u1edbi c\u00e1c h\u1ee3p kim nh\u01b0 347.<\/p>

      Ch\u1ed1ng \u0103n m\u00f2n<\/h3>

      Th\u00e9p kh\u00f4ng g\u1ec9 c\u1ea5p 301 cung c\u1ea5p t\u1ed1t kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a> trong m\u00f4i tr\u01b0\u1eddng \u00f4n h\u00f2a. N\u00f3 ch\u1ed1ng \u0103n m\u00f2n t\u1eeb \u0111i\u1ec1u ki\u1ec7n kh\u00ed quy\u1ec3n, n\u01b0\u1edbc v\u00e0 m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t. Tuy nhi\u00ean, n\u00f3 \u00edt ch\u1ed1ng \u0103n m\u00f2n h\u01a1n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 c\u1ea5p cao h\u01a1n nh\u01b0 316. H\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n l\u00e0m t\u0103ng nguy c\u01a1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi h\u00e0n ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t. N\u00f3 kh\u00f4ng l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao nh\u01b0 ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00e0ng h\u1ea3i ho\u1eb7c h\u00f3a ch\u1ea5t.<\/p>

      Gia c\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 301<\/h2>

      L\u00e0m vi\u1ec7c l\u1ea1nh<\/h3>

      L\u00e0m ngu\u1ed9i l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 b\u1ec1n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301 do t\u1ed1c \u0111\u1ed9 l\u00e0m c\u1ee9ng cao, t\u0103ng kho\u1ea3ng 14 MPa cho m\u1ed7i l\u1ea7n gi\u1ea3m 1% di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang. Khi v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c c\u00e1n ngu\u1ed9i ho\u1eb7c t\u1ea1o h\u00ecnh, \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a n\u00f3 t\u0103ng nhanh ch\u00f3ng. Qu\u00e1 tr\u00ecnh n\u00e0y c\u0169ng c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i m\u1ed9t ph\u1ea7n c\u1ea5u tr\u00fac austenite th\u00e0nh martensite, t\u0103ng th\u00eam \u0111\u1ed9 c\u1ee9ng. M\u1eb7c d\u00f9 \u0111\u1ed9 b\u1ec1n t\u0103ng l\u00ean, h\u1ee3p kim v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ee7 \u0111\u1ed9 d\u1ebbo \u0111\u1ec3 bi\u1ebfn d\u1ea1ng l\u1ea1nh nghi\u00eam tr\u1ecdng. Ngo\u00e0i ra, trong khi th\u00e9p kh\u00f4ng g\u1ec9 301 kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh \u1edf tr\u1ea1ng th\u00e1i \u1ee7, l\u00e0m ngu\u1ed9i t\u1ea1o ra t\u1eeb t\u00ednh m\u1ea1nh.<\/p>

      H\u00e0n<\/h3>

      Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t. C\u00f3 th\u1ec3 h\u00e0n b\u1eb1ng h\u1ea7u h\u1ebft c\u00e1c k\u1ef9 thu\u1eadt ti\u00eau chu\u1ea9n, v\u1edbi kim lo\u1ea1i ph\u1ee5 nh\u01b0 lo\u1ea1i 308L \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb. Sau khi h\u00e0n, c\u1ea7n \u1ee7 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1i \u01b0u v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c t\u00e1c \u0111\u1ed9ng do gia c\u00f4ng ngu\u1ed9i g\u00e2y ra. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i cacbon th\u1ea5p nh\u01b0 301L v\u00e0 301LN, th\u01b0\u1eddng kh\u00f4ng c\u1ea7n \u1ee7. H\u00e0n \u0111i\u1ec3m th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1eafp r\u00e1p c\u00e1c th\u00e0nh ph\u1ea7n 301 c\u00e1n ngu\u1ed9i v\u00ec n\u00f3 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 c\u1ee7a v\u1eadt li\u1ec7u. <\/p>

      X\u1eed l\u00fd nhi\u1ec7t<\/h3>

      Th\u00e9p kh\u00f4ng g\u1ec9 301 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng th\u00f4ng qua x\u1eed l\u00fd nhi\u1ec7t; n\u00f3 \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng ch\u1ec9 b\u1eb1ng c\u00e1ch l\u00e0m ngu\u1ed9i. \u0110\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh \u1ee7, v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 1010\u00b0C \u0111\u1ebfn 1120\u00b0C, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i nhanh, th\u01b0\u1eddng l\u00e0 b\u1eb1ng c\u00e1ch l\u00e0m ngu\u1ed9i b\u1eb1ng n\u01b0\u1edbc ho\u1eb7c l\u00e0m ngu\u1ed9i nhanh b\u1eb1ng kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4i ph\u1ee5c \u0111\u1ed9 d\u1ebbo v\u00e0 l\u00e0m gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng \u0111\u1ed9 c\u1ee9ng. C\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u1ee9ng su\u1ea5t sau khi l\u00e0m ngu\u1ed9i, nh\u01b0ng n\u00f3 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 c\u1ee9ng ho\u1eb7c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u.<\/p>

      Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h2>

      Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 410:<\/p>

      Y\u1ebfu t\u1ed1<\/strong><\/td>Cacbon, C<\/strong><\/td>Crom, Cr<\/strong><\/td>S\u1eaft, Fe<\/strong><\/td>Mangan, Mn<\/strong><\/td>Niken, Ni<\/strong><\/td>Nit\u01a1, N<\/strong><\/td>Ph\u1ed1t pho, P<\/strong><\/td>Silic, Si<\/strong><\/td>L\u01b0u hu\u1ef3nh, S<\/strong><\/td><\/tr>
      wt%<\/td>\u22640,15<\/td>16 – 18<\/td>70.7 \u2013 78 (C\u00e2n b\u1eb1ng)<\/td>\u2264 2.0<\/td>6.0 – 8.0<\/td>\u2264 0,10<\/td>\u2264 0,045<\/td>\u2264 1.0<\/td>\u2264 0,030<\/td><\/tr><\/tbody><\/table><\/figure>

      T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301<\/h2>

      Sau \u0111\u00e2y l\u00e0 ba l\u00fd do ch\u00ednh khi\u1ebfn th\u00e9p kh\u00f4ng g\u1ec9 301 tr\u1edf n\u00ean \u0111\u1ed9c \u0111\u00e1o:<\/p>

      1. \u0110\u1ed9 b\u1ec1n cao do qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n.<\/li>\n\n
      2. \u0110\u1ed9 d\u1ebbo tuy\u1ec7t v\u1eddi, gi\u00fap d\u1ec5 d\u00e0ng t\u1ea1o h\u00ecnh th\u00e0nh nhi\u1ec1u s\u1ea3n ph\u1ea9m kh\u00e1c nhau.<\/li>\n\n
      3. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n nh\u1eb9.<\/li><\/ol>

        T\u00ednh ch\u1ea5t v\u1eadt l\u00fd<\/h3>

        Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ed1t l\u00f5i c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301:<\/p>

        T\u00e0i s\u1ea3n<\/strong><\/td>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh (Metric\/Imperial)<\/strong><\/td>Hi\u1ec7u su\u1ea5t<\/strong><\/td><\/tr>
        T\u1ec9 tr\u1ecdng<\/td>8,03 g\/cc (0,290 lb\/in\u00b3)<\/td>V\u1eadt li\u1ec7u kh\u00e1 n\u1eb7ng v\u00e0 ch\u1eafc ch\u1eafn.<\/td><\/tr>
        \u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td>1399 \u2013 1421 \u00b0C (2550 \u2013 2590 \u00b0F)<\/td>Ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao m\u00e0 kh\u00f4ng b\u1ecb tan ch\u1ea3y.<\/td><\/tr>
        CTE, Tuy\u1ebfn t\u00ednh<\/td>16,6 \u2013 19,5 \u00b5m\/m-\u00b0C (9,22 \u2013 10,8 \u00b5in\/in-\u00b0F)<\/td>N\u1edf ra v\u1eeba ph\u1ea3i khi \u0111\u01b0\u1ee3c \u0111un n\u00f3ng.<\/td><\/tr>
        Nhi\u1ec7t dung ri\u00eang<\/td>0,500 J\/g-\u00b0C (0,120 BTU\/lb-\u00b0F)<\/td>H\u1ea5p th\u1ee5 v\u00e0 gi\u1eef nhi\u1ec7t kh\u00e1 t\u1ed1t.<\/td><\/tr>
        \u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td>16,3 W\/mK (113 BTU-in\/gi\u1edd-ft\u00b2-\u00b0F)<\/td>Truy\u1ec1n nhi\u1ec7t \u1edf m\u1ee9c \u0111\u1ed9 v\u1eeba ph\u1ea3i.<\/td><\/tr>
        \u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td>0,0000720 ohm-cm<\/td>Kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ea5t d\u1eabn \u0111i\u1ec7n t\u1ed1t.<\/td><\/tr>
        T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh<\/td><= 1.02 (\u1ee6, H = 200 Oersted)<\/td>C\u00f3 t\u00ednh t\u1eeb nh\u1eb9 sau khi l\u00e0m ngu\u1ed9i.<\/td><\/tr><\/tbody><\/table><\/figure>

        *CTE, Tuy\u1ebfn t\u00ednh \u0111\u1ec1 c\u1eadp \u0111\u1ebfn H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t, Tuy\u1ebfn t\u00ednh.<\/em><\/p>

        T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h3>

        Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ed1t l\u00f5i c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301:<\/p>

        T\u00ecnh tr\u1ea1ng<\/strong><\/td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/strong><\/td>S\u1ee9c ch\u1ecbu l\u1ef1c<\/strong><\/td>\u0110\u1ed9 c\u1ee9ng Rockwell<\/strong><\/td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/strong><\/td>M\u00f4 \u0111un Young (khi c\u00e1n d\u1ecdc\/ngang)<\/strong><\/td><\/tr>
        \u1ee6<\/td>\u2265 515 MPa (74,7 ksi)<\/td>\u2265 205 MPa (29,7 ksi)<\/td>10HRC<\/td>\u2265 40% (\u1edf m\u1ee9c 2\u2033 ho\u1eb7c 50 mm)<\/td>214 GPa \/ 31,0 msi211 GPa \/ 30,6 msi<\/td><\/tr>
        1\/4 Kh\u00f3<\/td>\u2265 862 MPa (125 ksi)<\/td>\u2265 517 MPa (75 ksi)<\/td>25HRC<\/td>\u2265 25% (trong 2\u2033 ho\u1eb7c 50 mm)<\/td>193 GPa \/ 28,0 msi197 GPa \/ 28,6 msi<\/td><\/tr>
        1\/2 Kh\u00f3<\/td>\u2265 1034 MPa (150 ksi)<\/td>\u2265 758 MPa (110 ksi)<\/td>32HRC<\/td>\u2265 18% (trong 2\u2033 ho\u1eb7c 50 mm)<\/td>185 GPa \/ 26,8 msi186 GPa \/ 27,0 msi<\/td><\/tr>
        3\/4 Kh\u00f3<\/td>\u2265 1207 MPa (175,1 ksi)<\/td>\u2265 931 MPa (135 ksi)<\/td>37 HRC<\/td>\u2265 12% (trong 2\u2033 ho\u1eb7c 50 mm)<\/td>178 GPa \/ 25,8 msi190 GPa \/ 27,6 msi<\/td><\/tr>
        \u0110\u1ea7y \u0111\u1ee7 kh\u00f3<\/td>\u2265 1276 MPa (185,1 ksi)<\/td>\u2265 965 MPa (140 ksi)<\/td>41 HRC<\/td>\u2265 9% (trong 2\u2033 ho\u1eb7c 50 mm)<\/td>174 GPa \/ 25,2 msi (khi c\u00e1n)196 GPa \/ 28,4 msi (gi\u1ea3m \u1ee9ng su\u1ea5t)<\/td><\/tr><\/tbody><\/table><\/figure>

        T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/h3>

        Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft c\u00e1c t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ed1t l\u00f5i c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301:<\/p>

        T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/strong><\/td>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/td>Hi\u1ec7u su\u1ea5t<\/strong><\/td><\/tr>
        Ch\u1ed1ng \u0103n m\u00f2n<\/td>Kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i qu\u00e1 tr\u00ecnh oxy h\u00f3a c\u1ee7a m\u00f4i tr\u01b0\u1eddng ho\u1eb7c h\u01b0 h\u1ecfng do h\u00f3a ch\u1ea5t.<\/td>Trung b\u00ecnh; th\u00edch h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng \u00f4n h\u00f2a, \u00edt b\u1ec1n h\u01a1n 304\/316.<\/td><\/tr>
        \u0110\u1ed9 nh\u1ea1y pH<\/td>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng pH kh\u00e1c nhau.<\/td>Ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng trung t\u00ednh\/h\u01a1i axit; k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n pH kh\u1eafc nghi\u1ec7t.<\/td><\/tr>
        Ph\u1ea3n \u1ee9ng<\/td>Xu h\u01b0\u1edbng t\u01b0\u01a1ng t\u00e1c h\u00f3a h\u1ecdc v\u1edbi c\u00e1c ch\u1ea5t.<\/td>\u0110\u1ed9 ph\u1ea3n \u1ee9ng th\u1ea5p; cao h\u01a1n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t so v\u1edbi 316.<\/td><\/tr>
        Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a<\/td>Kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00ecnh th\u00e0nh l\u1edbp oxit.<\/td>Ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao; th\u1ea5p h\u01a1n 304\/310.<\/td><\/tr>
        th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/td>Kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh l\u1edbp oxit b\u1ea3o v\u1ec7.<\/td>Ch\u1ecbu t\u00e1c \u0111\u1ed9ng t\u1ed1t, m\u1eb7c d\u00f9 \u0111\u1ed9 b\u1ec1n k\u00e9m h\u01a1n 304\/316 trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/td><\/tr>
        Kh\u1ea3 n\u0103ng ch\u00e1y<\/td>Kh\u1ea3 n\u0103ng b\u1eaft l\u1eeda v\u00e0 ch\u00e1y.<\/td>Kh\u00f4ng ch\u00e1y.<\/td><\/tr>
        T\u00ednh d\u1ec5 ch\u00e1y<\/td>Kh\u1ea3 n\u0103ng duy tr\u00ec qu\u00e1 tr\u00ecnh ch\u00e1y.<\/td>Kh\u00f4ng b\u1eaft l\u1eeda.<\/td><\/tr><\/tbody><\/table><\/figure>

        S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 301, 302, 304 v\u00e0 316<\/h2>

        Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 c\u00f3 s\u1ef1 so s\u00e1nh nhanh gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 301, 302, 304 v\u00e0 316:<\/p>

        T\u00e0i s\u1ea3n<\/strong><\/td>301<\/strong><\/td>302<\/strong><\/td>304<\/a><\/strong><\/td>316<\/strong><\/a><\/td><\/tr>
        Ki\u1ec3u<\/td>Austenit<\/td>Austenit<\/td>Austenit<\/td>Austenit<\/td><\/tr>
        C\u1ea5u tr\u00fac tinh th\u1ec3<\/td>Kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng t\u00e2m m\u1eb7t (FCC)<\/td>Kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng t\u00e2m m\u1eb7t (FCC)<\/td>Kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng t\u00e2m m\u1eb7t (FCC)<\/td>Kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng t\u00e2m m\u1eb7t (FCC)<\/td><\/tr>
        Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/td>Cr: 16-18%, Ni: 6-8%, C: \u22640,15%<\/td>Cr: 17-19%, Ni: 8-10%, C: \u22640,15%<\/td>Cr: 18-20%, Ni: 8-10,5%<\/td>Cr: \uff0818%, Mo: \uff083%, Ni: \uff0814%<\/td><\/tr>
        Ch\u1ed1ng \u0103n m\u00f2n<\/td>T\u1ed1t<\/td>T\u1ed1t<\/td>T\u1ed1t<\/td>Tuy\u1ec7t v\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng bi\u1ec3n<\/td><\/tr>
        \u0110\u1ed9 b\u1ec1n k\u00e9o<\/td>515 MPa (74,7 ksi)<\/td>585 MPa (84,8 ksi)<\/td>505 MPa (73,2 ksi)<\/td>580 MPa (84,1 ksi)<\/td><\/tr>
        S\u1ee9c ch\u1ecbu l\u1ef1c<\/td>205 MPa (29,7 ksi)<\/td>255 MPa (37,0 ksi) <\/td>215 MPa (31,2 ksi)<\/td>290 MPa (42,1 ksi)<\/td><\/tr>
        \u0110\u1ed9 c\u1ee9ng Rockwell<\/td>92 HRB<\/td>90 HRB<\/td>70 HRB<\/td>79 HRB<\/td><\/tr>
        Kh\u1ea3 n\u0103ng h\u00e0n<\/td>T\u1ed1t<\/td>T\u1ed1t<\/td>Xu\u1ea5t s\u1eafc<\/td>Xu\u1ea5t s\u1eafc<\/td><\/tr>
        Tr\u1ecb gi\u00e1<\/td>Th\u1ea5p<\/td>Th\u1ea5p<\/td>Th\u1ea5p<\/td>Cao h\u01a1n 304<\/td><\/tr>
        \u1ee8ng d\u1ee5ng<\/td>L\u00f2 xo, ph\u1ee5 t\u00f9ng \u00f4 t\u00f4, v\u00f2ng \u0111\u1ec7m<\/td>Thi\u1ebft b\u1ecb h\u00f3a ch\u1ea5t, \u0111\u1ed3 d\u00f9ng, ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/td>Thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m, ki\u1ebfn tr\u00fac<\/td>M\u00f4i tr\u01b0\u1eddng bi\u1ec3n, thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 h\u00f3a ch\u1ea5t<\/td><\/tr><\/tbody><\/table><\/figure>

        Nh\u1eefng g\u00ec b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 quan t\u00e2m<\/h2>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 b\u1ecb g\u1ec9 kh\u00f4ng?<\/h3>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng g\u1ec9, nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o d\u01b0\u1ee1ng \u0111\u00fang c\u00e1ch do h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 kh\u00e1c.<\/p>

        \u0110\u1ecdc li\u00ean quan<\/strong><\/p>

        Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 b\u1ecb g\u1ec9 kh\u00f4ng v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch n\u00e0o?<\/a><\/p>

        L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 l\u00e0m s\u1ea1ch v\u00e0 \u0111\u00e1nh b\u00f3ng th\u00e9p kh\u00f4ng g\u1ec9?<\/a><\/p>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/h3>

        C\u00f3, th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 t\u00ednh t\u1eeb, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau khi \u0111\u01b0\u1ee3c gia c\u00f4ng ngu\u1ed9i.<\/p>

        \u0110\u1ecdc li\u00ean quan<\/strong><\/p>

        Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/a><\/p>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 ph\u1ea3i l\u00e0 lo\u1ea1i th\u00e9p d\u00f9ng trong th\u1ef1c ph\u1ea9m kh\u00f4ng?<\/h3>

        C\u00f3, th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ph\u1ea9m, nh\u01b0ng \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 304 do h\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n, khi\u1ebfn n\u00f3 d\u1ec5 b\u1ecb \u0103n m\u00f2n h\u01a1n trong m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng th\u1ef1c ph\u1ea9m. Th\u00e9p 304 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean s\u1eed d\u1ee5ng trong th\u1ef1c ph\u1ea9m.<\/p>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 c\u00f3 ph\u1ea3i l\u00e0 lo\u1ea1i th\u00e9p d\u00f9ng trong y t\u1ebf kh\u00f4ng?<\/h3>

        Th\u00e9p kh\u00f4ng g\u1ec9 301 th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 lo\u1ea1i d\u00f9ng trong y t\u1ebf. C\u00e1c \u1ee9ng d\u1ee5ng y t\u1ebf th\u01b0\u1eddng \u01b0a chu\u1ed9ng th\u00e9p kh\u00f4ng g\u1ec9 316 do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc cao h\u01a1n. 301 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00f4ng d\u00f9ng trong y t\u1ebf.<\/p>

        T\u00f3m t\u1eaft & Th\u00eam n\u1eefa<\/h2>

        B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch ng\u1eafn g\u1ecdn v\u1ec1 \u0111\u1ecbnh ngh\u0129a, th\u00e0nh ph\u1ea7n, t\u00ednh ch\u1ea5t, quy tr\u00ecnh ch\u1ebf bi\u1ebfn, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c kh\u00eda c\u1ea1nh quan tr\u1ecdng kh\u00e1c c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 301. \u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c c\u00e1c lo\u1ea1i th\u00e9p kh\u00e1c, h\u00e3y xem blog c\u1ee7a ch\u00fang t\u00f4i<\/a> ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi c\u00e1c chuy\u00ean gia kim lo\u1ea1i c\u1ee7a ch\u00fang t\u00f4i<\/a>.<\/p>

        L\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u v\u1ec1 th\u00e9p \u0111\u1eb7c bi\u1ec7t, Th\u00e9pPRO<\/strong> cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u1ee9ng d\u1ee5ng \u0111a ng\u00e0nh v\u00e0 d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh. Ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m 100% v\u00e0 cam k\u1ebft ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi kh\u00e1ch h\u00e0ng. Gh\u00e9 th\u0103m trang web c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam, ho\u1eb7c g\u1eedi cho ch\u00fang t\u00f4i m\u1ed9t y\u00eau c\u1ea7u<\/a>. Ch\u00fang t\u00f4i s\u1ebd li\u00ean h\u1ec7 v\u1edbi b\u1ea1n s\u1edbm nh\u1ea5t!<\/p>","protected":false},"excerpt":{"rendered":"

        Hi\u1ec7n t\u1ea1i, kho h\u00e0ng c\u1ee7a SteelPRO Group c\u00f3 c\u00e1c s\u1ea3n ph\u1ea9m SS 301 (UNS S30100): t\u1ea5m, l\u00e1, cu\u1ed9n, d\u1ea3i, \u1ed1ng, \u1ed1ng d\u1eabn, thanh, que, [\u2026]<\/p>","protected":false},"author":1,"featured_media":10924,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4191,112],"tags":[],"class_list":["post-10963","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades","category-stainless-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=10963"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/10963\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/10924"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=10963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=10963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=10963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}