{"id":21841,"date":"2025-04-11T18:09:00","date_gmt":"2025-04-11T10:09:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21841"},"modified":"2025-04-07T16:07:36","modified_gmt":"2025-04-07T08:07:36","slug":"p91-guideline","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/alloy-steel\/p91-guideline\/","title":{"rendered":"\u1ed0ng d\u1eabn th\u00e9p h\u1ee3p kim li\u1ec1n m\u1ea1ch c\u1ea5p A335 P91"},"content":{"rendered":"

L\u00e0 \u0111\u01a1n v\u1ecb d\u1eabn \u0111\u1ea7u trong c\u00e1c gi\u1ea3i ph\u00e1p h\u1ee3p kim hi\u1ec7u su\u1ea5t cao, SteelPro Group k\u1ebft h\u1ee3p k\u1ef9 thu\u1eadt ti\u00ean ti\u1ebfn v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t \u0111\u1ec3 mang l\u1ea1i \u0111\u1ed9 tin c\u1eady trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n kh\u1eaft khe. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1eb7c t\u00ednh \u0111\u1ed9c \u0111\u00e1o, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt s\u1ea3n xu\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a \u1ed1ng th\u00e9p P91.<\/p>

Th\u00e9p P91 l\u00e0 g\u00ec?<\/span><\/h2>

Th\u00e9p P91 l\u00e0 th\u00e9p h\u1ee3p kim ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao theo ti\u00eau chu\u1ea9n ASTM A335. \u0110\u00e2y l\u00e0 h\u1ee3p kim 9Cr-1Mo-V \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i v\u1edbi c\u1ea5u tr\u00fac vi m\u00f4 martensitic-ferritic. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u1edf nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 1100\u00b0F (593\u00b0C). P91 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u1ee9t \u1ee9ng su\u1ea5t v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t tuy\u1ec7t v\u1eddi. N\u00f3 l\u00fd t\u01b0\u1edfng cho \u0111\u01b0\u1eddng \u1ed1ng h\u01a1i \u00e1p su\u1ea5t cao, n\u1ed3i h\u01a1i, b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t v\u00e0 \u1ed1ng si\u00eau nhi\u1ec7t.<\/span><\/p>

Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p A335 c\u1ea5p P91<\/span><\/h2>
Y\u1ebfu t\u1ed1<\/strong><\/td>Th\u00e9p P91 Lo\u1ea1i 1 (wt%)<\/strong><\/td>Th\u00e9p P91 Lo\u1ea1i 2 (wt%)<\/strong><\/td><\/tr>
Cacbon (C)<\/td>0.08 – 0.12<\/td>0.08 – 0.12<\/td><\/tr>
Silic (Si)<\/td>0.20 – 0.50<\/td>0.20 – 0.40<\/td><\/tr>
Mangan (Mn)<\/td>0.30 – 0.60<\/td>0.30 – 0.50<\/td><\/tr>
Ph\u1ed1t pho (P)<\/td>\u2264 0,02<\/td>\u2264 0,02<\/td><\/tr>
L\u01b0u hu\u1ef3nh (S)<\/td>\u2264 0,01<\/td>\u2264 0,005<\/td><\/tr>
Crom (Cr)<\/td>8.00 – 9.50<\/td>8.00 – 9.50<\/td><\/tr>
Niken (Ni)<\/td>\u2264 0,40<\/td>\u2264 0,20<\/td><\/tr>
\u0110\u1ed3ng (Cu)<\/td>–<\/td>\u2264 0,10<\/td><\/tr>
Molip\u0111en (Mo)<\/td>0.85 – 1.05<\/td>0.85 – 1.05<\/td><\/tr>
Asen (As)<\/td>–<\/td>\u2264 0,01<\/td><\/tr>
Nit\u01a1 (N)<\/td>0.03 – 0.07<\/td>0.035 – 0.07<\/td><\/tr>
Titan (Ti)<\/td>\u2264 0,01<\/td>\u2264 0,01<\/td><\/tr>
Vonfram (W)<\/td>–<\/td>\u2264 0,05<\/td><\/tr>
Vanadi (V)<\/td>0.18 – 0.25<\/td>0.18 – 0.25<\/td><\/tr>
Niobi (Nb)<\/td>0.06 – 0.10<\/td>0.06 – 0.10<\/td><\/tr>
Zirconi (Zr)<\/td>\u2264 0,01<\/td>\u2264 0,01<\/td><\/tr>
Bo (B)<\/td>–<\/td>\u2264 0,001<\/td><\/tr>
Nh\u00f4m (Al)<\/td>\u2264 0,02<\/td>\u2264 0,02<\/td><\/tr>
Thi\u1ebfc (Sn)<\/td>–<\/td>\u2264 0,01<\/td><\/tr>
Antimon (Sb)<\/td>–<\/td>\u2264 0,003<\/td><\/tr><\/tbody><\/table><\/figure>
  • N\/Al \u2265 4.0: \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 ki\u1ec3m so\u00e1t s\u1ef1 k\u1ebft t\u1ee7a AlN.<\/span><\/li><\/ul>

    T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p P91<\/h2>
    T\u00e0i s\u1ea3n<\/strong><\/td>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><\/tr>
    \u0110\u1ed9 b\u1ec1n k\u00e9o<\/td>\u2265 85 ksi<\/td>\u2265 585 Mpa<\/td><\/tr>
    S\u1ee9c m\u1ea1nh n\u0103ng su\u1ea5t<\/td>\u2265 60ksi<\/td>\u2265 415 Mpa<\/td><\/tr><\/tbody><\/table><\/figure>

    \u0110\u1ed9 gi\u00e3n d\u00e0i t\u00ednh to\u00e1n c\u1ee7a \u1ed1ng th\u00e9p P91<\/span><\/h2>
    \u0110\u1ed9 d\u00e0y c\u1ee7a t\u01b0\u1eddng<\/strong><\/td>\u0110\u1ed9 gi\u00e3n d\u00e0i t\u1ed1i thi\u1ec3u (2 in. ho\u1eb7c 50 mm), %<\/strong><\/td><\/tr>
    TRONG.<\/td>mm<\/td>Chi\u1ec1u d\u1ecdc<\/td><\/tr>
    5\/16<\/td>8<\/td>20<\/td><\/tr>
    9\/32<\/td>7.2<\/td>19<\/td><\/tr>
    1\/4<\/td>6.4<\/td>18<\/td><\/tr>
    7\/32<\/td>5.6<\/td>17<\/td><\/tr>
    3\/16<\/td>4.8<\/td>16<\/td><\/tr>
    5\/32<\/td>4<\/td>15<\/td><\/tr>
    7\/8<\/td>3.2<\/td>14<\/td><\/tr>
    3\/32<\/td>2.4<\/td>13<\/td><\/tr>
    1\/18<\/td>1.6<\/td>12<\/td><\/tr><\/tbody><\/table><\/figure>

    \u1ee8ng d\u1ee5ng th\u00e9p P91<\/span><\/h2>
    • Nh\u00e0 m\u00e1y \u0111i\u1ec7n<\/span>\u00a0\u2013 L\u00f2 h\u01a1i, \u0111\u01b0\u1eddng \u1ed1ng h\u01a1i v\u00e0 h\u1ec7 th\u1ed1ng \u0111un n\u00f3ng l\u1ea1i.<\/span><\/li>\n\n
    • H\u00f3a d\u1ea7u<\/span>\u00a0\u2013 B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u, nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t.<\/span><\/li>\n\n
    • D\u1ea7u kh\u00ed<\/span>\u00a0\u2013 \u0110\u01b0\u1eddng \u1ed1ng, gi\u00e0n khoan ngo\u00e0i kh\u01a1i v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb x\u1eed l\u00fd.<\/span><\/li>\n\n
    • S\u01b0\u1edfi \u1ea5m c\u00f4ng nghi\u1ec7p<\/span>\u00a0\u2013 L\u00f2 nung v\u00e0 h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111\u1ed9 cao.<\/span><\/li>\n\n
    • C\u1ea5u tr\u00fac & V\u1eadn chuy\u1ec3n ch\u1ea5t l\u1ecfng<\/span>\u00a0\u2013 Khung \u0111\u1ee1 v\u00e0 truy\u1ec1n ch\u1ea5t l\u1ecfng.<\/span><\/li><\/ul>

      Th\u00e9p P91 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u1ec1 \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t.<\/span><\/p>

      Ti\u00eau chu\u1ea9n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt th\u00e9p P91<\/span><\/h2>

      Th\u00e9p h\u1ee3p kim P91 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u h\u00ecnh th\u1ee9c s\u1ea3n xu\u1ea5t kh\u00e1c nhau, bao g\u1ed3m \u1ed1ng, ph\u1ee5 ki\u1ec7n \u1ed1ng v\u00e0 t\u1ea5m th\u00e9p. S\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n ASTM sau:<\/span><\/p>

      Lo\u1ea1i v\u1eadt li\u1ec7u<\/strong><\/td>Ti\u00eau chu\u1ea9n<\/strong><\/td>\u1ee8ng d\u1ee5ng<\/strong><\/td><\/tr>
      \u1ed0ng li\u1ec1n m\u1ea1ch<\/td>ASTM A335 P91 \/ ASME SA335 P91<\/td>H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, \u00e1p su\u1ea5t cao<\/td><\/tr>
      Ph\u1ee5 ki\u1ec7n \u1ed1ng<\/td>Ti\u00eau chu\u1ea9n ASTM A234 P91 \/ ASME SA234 P91<\/td>C\u00fat, ch\u1eef T, \u1ed1ng gi\u1ea3m, n\u1eafp cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng<\/td><\/tr>
      M\u1eb7t b\u00edch & ph\u1ee5 ki\u1ec7n r\u00e8n<\/td>Ti\u00eau chu\u1ea9n ASTM A182 F91 \/ ASME SA182 F91<\/td>M\u1eb7t b\u00edch, ph\u1ee5 ki\u1ec7n v\u00e0 van d\u00f9ng cho nhi\u1ec7t \u0111\u1ed9 cao<\/td><\/tr>
      T\u1ea5m th\u00e9p Chrome Moly<\/td>ASTM A387 C\u1ea5p 91 \/ ASME SA387 C\u1ea5p 91<\/td>B\u00ecnh ch\u1ecbu \u00e1p su\u1ea5t, n\u1ed3i h\u01a1i, \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao<\/td><\/tr>
      \u1ed0ng h\u00e0n Crom Moly<\/td>Ti\u00eau chu\u1ea9n ASTM A691 91 \/ ASME SA691 91<\/td>\u1ed0ng h\u00e0n l\u00e0m t\u1eeb t\u1ea5m A387 d\u00f9ng trong c\u00f4ng nghi\u1ec7p<\/td><\/tr><\/tbody><\/table><\/figure>

      K\u00edch th\u01b0\u1edbc \u1ed1ng th\u00e9p P91<\/span><\/h2>

      \u1ed0ng th\u00e9p h\u1ee3p kim li\u1ec1n m\u1ea1ch A335 P91 c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u00e1p su\u1ea5t cao. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft v\u1ec1 \u1ed1ng th\u00e9p h\u1ee3p kim P91 c\u1ee7a ch\u00fang t\u00f4i.<\/span><\/p>

      \u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/strong><\/td>Chi ti\u1ebft<\/strong><\/td><\/tr>
      K\u00edch th\u01b0\u1edbc \u1ed1ng<\/td>\u00bd\u201d \u0111\u1ebfn 24\u201d (DN25 \u0111\u1ebfn DN600)<\/td><\/tr>
      \u0110\u1ed9 d\u00e0y c\u1ee7a t\u01b0\u1eddng<\/td>SCH 40, SCH STD, SCH 80, SCH XS, SCH 160<\/td><\/tr>
      T\u00f9y ch\u1ecdn \u0111\u1ed9 d\u00e0i<\/td>6 m\u00e9t, 12 m\u00e9t ho\u1eb7c t\u00f9y ch\u1ec9nh<\/td><\/tr>
      Quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/td>C\u00e1n n\u00f3ng li\u1ec1n m\u1ea1ch<\/td><\/tr>
      X\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/td>\u0110\u00e1nh b\u00f3ng, S\u01a1n vecni, 3LPE (Polyetylen ba l\u1edbp), FBE (Epoxy li\u00ean k\u1ebft n\u00f3ng ch\u1ea3y)<\/td><\/tr>
      K\u1ebft th\u00fac ho\u00e0n thi\u1ec7n<\/td>PE (\u0110\u1ea7u ph\u1eb3ng), BE (\u0110\u1ea7u v\u00e1t)<\/td><\/tr><\/tbody><\/table><\/figure>

      \u1ed0ng th\u00e9p P91 Dung sai k\u00edch th\u01b0\u1edbc<\/span><\/h2>

      \u1ed0ng th\u00e9p h\u1ee3p kim li\u1ec1n m\u1ea1ch A335 P91 c\u1ee7a ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 c\u00e1c dung sai k\u00edch th\u01b0\u1edbc nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u00e1p su\u1ea5t cao. <\/span><\/p>

      Dung sai \u0111\u1ed9 d\u00e0y th\u00e0nh<\/span><\/h3>
      K\u00edch th\u01b0\u1edbc \u1ed1ng danh ngh\u0129a (NPS) [DN]<\/strong><\/td>Dung sai tr\u00ean (+%)<\/strong><\/td>Dung sai d\u01b0\u1edbi (-%)<\/strong><\/td><\/tr>
      1\/8\u201d \u0111\u1ebfn 2 \u00bd\u201d [DN6 \u0111\u1ebfn DN65] (t\u1ea5t c\u1ea3 c\u00e1c t\u1ef7 l\u1ec7 t\/D)<\/td>+20%<\/td>-12.5%<\/td><\/tr>
      Tr\u00ean 2 \u00bd\u201d [DN65] v\u1edbi t\/D \u2264 5%<\/td>+22.5%<\/td>-0.125<\/td><\/tr>
      Tr\u00ean 2 \u00bd\u201d [DN65] v\u1edbi t\/D > 5%<\/td>+15%<\/td>-0.125<\/td><\/tr><\/tbody><\/table><\/figure>

      Dung sai \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i<\/span><\/h3>
      NPS [DN]<\/strong><\/td>Dung sai tr\u00ean (+ in.\/mm)<\/strong><\/td>Dung sai d\u01b0\u1edbi (- in.\/mm)<\/strong><\/td><\/tr>
      1\/8\u201d \u0111\u1ebfn 1 \u00bd\u201d [DN6 \u0111\u1ebfn DN40]<\/td>1\/64\u201d (0,015\u201d) \/ 0,4mm<\/td>1\/64\u201d (0,015\u201d) \/ 0,4mm<\/td><\/tr>
      Tr\u00ean 1 \u00bd\u201d \u0111\u1ebfn 4\u201d [DN40 \u0111\u1ebfn DN100]<\/td>1\/32\u201d (0,031\u201d) \/ 0,79mm<\/td>1\/32\u201d (0,031\u201d) \/ 0,79mm<\/td><\/tr>
      Tr\u00ean 4\u201d \u0111\u1ebfn 8\u201d [DN100 \u0111\u1ebfn DN200]<\/td>1\/16\u201d (0,062\u201d) \/ 1,59mm<\/td>1\/32\u201d (0,031\u201d) \/ 0,79mm<\/td><\/tr>
      Tr\u00ean 8\u201d \u0111\u1ebfn 12\u201d [DN200 \u0111\u1ebfn DN300]<\/td>3\/32\u201d (0,093\u201d) \/ 2,38mm<\/td>1\/32\u201d (0,031\u201d) \/ 0,79mm<\/td><\/tr>
      Tr\u00ean 12\u201d [DN300+]<\/td>\u00b11% c\u1ee7a OD \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td>\u00b11% c\u1ee7a OD \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td><\/tr><\/tbody><\/table><\/figure>

      Dung sai \u0111\u01b0\u1eddng k\u00ednh b\u00ean trong (ID)<\/span><\/h3>
      \u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng (OD)<\/strong><\/td>Dung sai (+\/- in.)<\/strong><\/td>Dung sai (+\/- mm)<\/strong><\/td><\/tr>
      \u00bc\u201d \u0111\u1ebfn 1 \u00bd\u201d (6mm \u0111\u1ebfn 40mm)<\/td>\u00b10,016\u201d<\/td>\u00b10,40mm<\/td><\/tr>
      1 \u00bd\u201d \u0111\u1ebfn 4\u201d (40mm \u0111\u1ebfn 100mm)<\/td>\u00b10,031\u201d<\/td>\u00b10,79mm<\/td><\/tr>
      4\u201d \u0111\u1ebfn 8\u201d (100mm \u0111\u1ebfn 200mm)<\/td>+1\/16\u201d (0,062\u201d) \/ -1\/32\u201d (0,031\u201d)<\/td>+1,59mm \/ -0,79mm<\/td><\/tr>
      8\u201d \u0111\u1ebfn 12\u201d (200mm \u0111\u1ebfn 300mm)<\/td>+3\/32\u201d (0,093\u201d) \/ -1\/32\u201d (0,031\u201d)<\/td>+2,38mm \/ -0,79mm<\/td><\/tr>
      12\u201d+ (Tr\u00ean 300mm)<\/td>\u00b11% c\u1ee7a OD \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td>\u00b11% c\u1ee7a OD \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td><\/tr><\/tbody><\/table><\/figure>

      X\u1eed l\u00fd nhi\u1ec7t th\u00e9p P91<\/span><\/h2>

      T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i chuy\u00ean v\u1ec1 \u1ed1ng li\u1ec1n m\u1ea1ch ASTM A335 P91 ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd nhi\u1ec7t ch\u00ednh x\u00e1c. Quy tr\u00ecnh bao g\u1ed3m b\u00ecnh th\u01b0\u1eddng h\u00f3a<\/span> v\u00e0 t\u00f4i luy\u1ec7n<\/span> ho\u1eb7c d\u1eadp t\u1eaft v\u00e0<\/span> s\u1ef1 t\u00f4i luy\u1ec7n<\/span>.<\/span><\/p>

      Chu\u1ea9n h\u00f3a v\u00e0 \u0111i\u1ec1u ch\u1ec9nh<\/span><\/h3>
      • \u0110\u01b0\u1ee3c \u0111un n\u00f3ng \u0111\u1ebfn 1900-1975\u00b0F (1040-1080\u00b0C)<\/span><\/li>\n\n
      • L\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed \u0111\u1ebfn kho\u1ea3ng 200\u00b0C<\/span><\/li>\n\n
      • \u0110\u01b0\u1ee3c t\u00f4i luy\u1ec7n \u1edf 1350-1470\u00b0F (730-800\u00b0C)<\/span>\u00a0\u0111\u1ec3 gi\u1ea3i t\u1ecfa c\u0103ng th\u1eb3ng v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo dai<\/span><\/li><\/ul>

        L\u00e0m ngu\u1ed9i v\u00e0 t\u00f4i luy\u1ec7n<\/span><\/h3>
        • \u0110\u01b0\u1ee3c \u0111un n\u00f3ng \u0111\u1ebfn 1900-1975\u00b0F (1040-1080\u00b0C)<\/span><\/li>\n\n
        • L\u00e0m ngu\u1ed9i nhanh (l\u00e0m ngu\u1ed9i) \u0111\u1ec3 gi\u1eef nguy\u00ean \u0111\u1ed9 b\u1ec1n<\/span><\/li>\n\n
        • \u0110\u01b0\u1ee3c t\u00f4i luy\u1ec7n \u1edf 1350-1470\u00b0F (730-800\u00b0C)<\/span>\u00a0\u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ebbo dai<\/span><\/li><\/ul>

          H\u00e0n th\u00e9p P91<\/span><\/h2>

          Th\u00e9p h\u1ee3p kim P91 cho ph\u00e9p \u00edt nh\u1ea5t m\u1ed9t Gi\u1ea3m \u0111\u1ed9 d\u00e0y th\u00e0nh 2-1<\/span>, d\u1eabn \u0111\u1ebfn:<\/span><\/p>

          • T\u1ea3i tr\u1ecdng m\u00f3c treo nh\u1eb9 h\u01a1n<\/span><\/li>\n\n
          • Gi\u1ea3m th\u1eddi gian h\u00e0n<\/span><\/li>\n\n
          • Ti\u00eau th\u1ee5 kim lo\u1ea1i ph\u1ee5 th\u1ea5p h\u01a1n<\/span><\/li><\/ul>

            V\u00ec t\u01b0\u1eddng d\u00e0y<\/span> \u1ed0ng P91, s\u01b0\u1edfi \u1ea5m c\u1ea3m \u1ee9ng<\/span> \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c l\u1ea7n gia nhi\u1ec7t v\u00e0 l\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/span>. <\/span><\/p>

            V\u1ec1 Quy tr\u00ecnh<\/span><\/h3>
            • L\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/span>: 200-300\u00b0C (392-572\u00b0F)<\/span>\u2014ng\u0103n ng\u1eeba n\u1ee9t v\u00e0 s\u1ed1c nhi\u1ec7t.<\/span><\/li>\n\n
            • N\u01b0\u1edbng sau khi h\u00e0n<\/span>: T\u00f9y ch\u1ecdn nh\u01b0ng c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u1ed1i h\u00e0n.<\/span><\/li>\n\n
            • L\u00e0m m\u00e1t<\/span>: \u1ed0ng ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m m\u00e1t d\u01b0\u1edbi 100\u00b0C (212\u00b0F) tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng<\/span>\u00a0\u0111\u1ec3 \u0111\u1ea3m b\u1ea3o chuy\u1ec3n \u0111\u1ed5i c\u1ea5u tr\u00fac vi m\u00f4 th\u00edch h\u1ee3p.<\/span><\/li>\n\n
            • X\u1eed l\u00fd nhi\u1ec7t sau h\u00e0n (PWHT)<\/span>\u00a0th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 tinh ch\u1ec9nh c\u1ea5u tr\u00fac vi m\u00f4.<\/span><\/li><\/ul>

              N\u00e2ng c\u1ea5p l\u00ean th\u00e9p P91 hi\u1ec7u su\u1ea5t cao<\/span><\/h2>

              SteelPro Group cung c\u1ea5p \u1ed1ng th\u00e9p h\u1ee3p kim li\u1ec1n m\u1ea1ch A335 Grade P91 cao c\u1ea5p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed1i \u0111a. Cho d\u00f9 b\u1ea1n c\u1ea7n k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh, khuy\u1ebfn ngh\u1ecb h\u00e0n c\u1ee7a chuy\u00ean gia hay h\u01b0\u1edbng d\u1eabn cho \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh, nh\u00f3m c\u1ee7a ch\u00fang t\u00f4i lu\u00f4n s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3.<\/span><\/p>

              Nh\u1eadn b\u00e1o gi\u00e1 t\u00f9y ch\u1ec9nh ngay h\u00f4m nay v\u00e0 \u0111\u01b0a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a b\u1ea1n l\u00ean t\u1ea7m cao m\u1edbi c\u00f9ng SteelPro Group.<\/span><\/p>

               <\/p>

              <\/p>","protected":false},"excerpt":{"rendered":"

              Kh\u00e1m ph\u00e1 \u1ed1ng d\u1eabn \u1ed1ng li\u1ec1n m\u1ea1ch A335 Grade P91 c\u1ee7a SteelPro Group. T\u00ecm hi\u1ec3u v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p c\u1ee7a n\u00f3.<\/p>","protected":false},"author":1,"featured_media":21842,"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":[4308],"tags":[],"class_list":["post-21841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alloy-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21841","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=21841"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21841\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/21842"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=21841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=21841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=21841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}