{"id":21364,"date":"2025-03-07T05:03:00","date_gmt":"2025-03-06T21:03:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21364"},"modified":"2025-03-10T17:39:18","modified_gmt":"2025-03-10T09:39:18","slug":"8740-steel","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/alloy-steel\/8740-steel\/","title":{"rendered":"Th\u00e9p h\u1ee3p kim AISI 8740 | Thanh th\u00e9p UNS G87400"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu \u1ee9ng su\u1ea5t cao, th\u00e9p AISI 8740 l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u. Lo\u1ea1i th\u00e9p h\u1ee3p kim n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t nh\u1ea5t.<\/p><p class=\"wp-block-paragraph\">V\u1eady \u0111i\u1ec1u g\u00ec l\u00e0m cho th\u00e9p AISI 8740 \u0111\u00e1ng tin c\u1eady \u0111\u1ebfn v\u1eady? Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd xem x\u00e9t c\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a th\u00e9p AISI 8740.&nbsp;<\/p><p class=\"wp-block-paragraph\">SteelPro Group, v\u1edbi cam k\u1ebft cung c\u1ea5p v\u1eadt li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 h\u1ed7 tr\u1ee3 chuy\u00ean m\u00f4n, s\u1ebd \u0111\u1ea3m b\u1ea3o b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c lo\u1ea1i th\u00e9p AISI 8740 t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p 8740 l\u00e0 g\u00ec?<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p AISI 8740 l\u00e0 th\u00e9p h\u1ee3p kim th\u1ea5p, c\u01b0\u1eddng \u0111\u1ed9 cao. S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa Cr v\u00e0 Ni gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, trong khi Mo gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Lo\u1ea1i th\u00e9p n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ecbu m\u1ecfi v\u00e0 ch\u1ecbu va \u0111\u1eadp. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u01b0 b\u00e1nh r\u0103ng, tr\u1ee5c v\u00e0 \u1ed1c v\u00edt. Kh\u1ea3 n\u0103ng gia c\u00f4ng c\u1ee7a n\u00f3 cho ph\u00e9p \u0111\u1ecbnh h\u00ecnh th\u00e0nh c\u00e1c chi ti\u1ebft ch\u00ednh x\u00e1c, ph\u1ee9c t\u1ea1p.<\/p><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p 8740<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>C\u00e1c y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>N\u1ed9i dung (wt%)<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.38~0.43<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.15~0.35<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.75~1.00<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u22640,035<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u22640,04<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>0.4~0.6<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>0.4~0.7<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>0.2~0.3<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740 T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Brinell<\/td><td>269 HB<\/td><td>269 HB<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Knoop<\/td><td>294 H\u1ed3ng K\u00f4ng<\/td><td>294 H\u1ed3ng K\u00f4ng<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell B<\/td><td>99 HRB<\/td><td>99 HRB<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell C<\/td><td>27HRC<\/td><td>27HRC<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Vickers<\/td><td>284 HV<\/td><td>287 HV<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, T\u1ed1i \u0111a<\/td><td>938 MPa<\/td><td>136.000 psi<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, \u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>620MPa<\/td><td>89.900 psi<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/td><td>0.16<\/td><td>0.16<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>205 GPa<\/td><td>29.700 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un kh\u1ed1i<\/td><td>160 GPa<\/td><td>23.200 kil\u00f4gam<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>0.65<\/td><td>0.65<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>80,0 GPa<\/td><td>11.600 kil\u00f4gam<\/td><\/tr><tr><td>T\u00e1c \u0111\u1ed9ng Izod<\/td><td>18,0 J<\/td><td>13,3 ft-lb<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740 T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,85g\/cm\u00b3<\/td><td>0,284 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1425-1510\u00b0C<\/td><td>2597-2750\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>40 W\/m\u00b7K<\/td><td>23,2 BTU\u00b7ft\/gi\u1edd\u00b7\u00b0F\/in<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>0,475 J\/g\u00b7\u00b0C<\/td><td>0,114 BTU\/lb\u00b7\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>46,6 W\/m\u00b7K<\/td><td>323 BTU\u00b7in\/gi\u1edd\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740 \u1ee8ng d\u1ee5ng th\u00e9p<\/h2><ul class=\"wp-block-list\"><li>B\u00e1nh r\u0103ng<\/li>\n\n<li>Tr\u1ee5c<\/li>\n\n<li>Ch\u1ed1t<\/li>\n\n<li>Tr\u1ee5c khu\u1ef7u<\/li>\n\n<li>Tr\u1ee5c<\/li>\n\n<li>V\u00f2ng bi l\u0103n<\/li><\/ul><p class=\"wp-block-paragraph\">Ch\u00fang t\u00f4i h\u1ee3p t\u00e1c v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 cung c\u1ea5p th\u00e9p AISI 8740 ch\u1ea5t l\u01b0\u1ee3ng cao cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u00f4 t\u00f4 v\u00e0 c\u00f4ng nghi\u1ec7p. V\u1eadt li\u1ec7u c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t c\u1ee7a ng\u00e0nh v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.&nbsp;<\/p><h2 class=\"wp-block-heading\">8740 H\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m th\u00e9p<\/h2><p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn th\u00e9p ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00e0 th\u00e9p 8740 cung c\u1ea5p \u0111a d\u1ea1ng c\u00e1c h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n. SteelPro Group c\u0169ng cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111o k\u00edch th\u01b0\u1edbc theo y\u00eau c\u1ea7u, \u0111\u1ea3m b\u1ea3o b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c s\u1ed1 \u0111o ch\u00ednh x\u00e1c c\u1ea7n thi\u1ebft cho d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh.<\/p><h3 class=\"wp-block-heading\">Thanh tr\u00f2n<\/h3><ul class=\"wp-block-list\"><li>\u0110\u01b0\u1eddng k\u00ednh: 6,35 mm ~ 254 mm (0,25 in ~ 10 in)<\/li><\/ul><h3 class=\"wp-block-heading\">Thanh vu\u00f4ng<\/h3><ul class=\"wp-block-list\"><li>K\u00edch th\u01b0\u1edbc: 6,35 mm ~ 152 mm (0,25 in ~ 6 in)<\/li><\/ul><h3 class=\"wp-block-heading\">Thanh ph\u1eb3ng<\/h3><ul class=\"wp-block-list\"><li>Chi\u1ec1u r\u1ed9ng: 12,7 mm ~ 305 mm (0,5 in ~ 12 in)<\/li>\n\n<li>\u0110\u1ed9 d\u00e0y: 6,35 mm ~ 50,8 mm (0,25 in ~ 2 in)<\/li><\/ul><h3 class=\"wp-block-heading\">\u0110\u0129a<\/h3><ul class=\"wp-block-list\"><li>\u0110\u1ed9 d\u00e0y: 6,35 mm ~ 101,6 mm (0,25 in ~ 4 in)<\/li>\n\n<li>Chi\u1ec1u r\u1ed9ng: 305 mm ~ 3048 mm (12 in ~ 120 in)<\/li>\n\n<li>Chi\u1ec1u d\u00e0i: 3048 mm ~ 12192 mm (120 in ~ 480 in)<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt th\u00e9p AISI 8740<\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Lo\u1ea1i<\/strong><\/td><td><strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/strong><\/td><\/tr><tr><td>AMS<\/td><td>AMS 6322, AMS 6322F, AMS 6323, AMS 6323D, AMS 6325, AMS 6325D, AMS 6327D, AMS 6358, AMS 6358B, AMS 6327, AMS 7496<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n ASTM<\/td><td>ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTM A29, ASTM A752, ASTM A320 (L7C, L73)<\/td><\/tr><tr><td>SAE<\/td><td>SAE J770, SAE J412, SAE J1397, SAE J404<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a th\u00e9p AISI 8740<\/h2><h3 class=\"wp-block-heading\">Thu\u1eadn l\u1ee3i<\/h3><ol class=\"wp-block-list\"><li><strong>S\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i<\/strong>:AISI 8740 mang l\u1ea1i \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i v\u01b0\u1ee3t tr\u1ed9i cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 m\u1ecfi<\/strong>: C\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n d\u01b0\u1edbi \u00e1p l\u1ef1c li\u00ean t\u1ee5c v\u00e0 s\u1eed d\u1ee5ng nhi\u1ec1u l\u1ea7n.<\/li>\n\n<li><strong>Ch\u1ed1ng \u0103n m\u00f2n<\/strong>: Crom v\u00e0 niken c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t<\/strong>:AISI 8740 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gia c\u00f4ng b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p.<\/li><\/ol><h3 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3><ol class=\"wp-block-list\"><li><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 h\u00e0n<\/strong>: H\u00e0n \u0111\u00f2i h\u1ecfi ph\u1ea3i gia nhi\u1ec7t tr\u01b0\u1edbc v\u00e0 x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n \u0111\u00fang c\u00e1ch \u0111\u1ec3 tr\u00e1nh g\u00e3y v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ed1i h\u00e0n.<\/li>\n\n<li><strong>Tr\u1ecb gi\u00e1<\/strong>:C\u00e1c th\u00e0nh ph\u1ea7n h\u1ee3p kim l\u00e0m cho th\u00e9p n\u00e0y \u0111\u1eaft h\u01a1n th\u00e9p th\u00f4ng th\u01b0\u1eddng.<\/li>\n\n<li><strong>Gi\u00f2n do x\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng \u0111\u00fang c\u00e1ch<\/strong>: X\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng gi\u00f2n.<\/li>\n\n<li><strong>H\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/strong>: N\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao n\u1ebfu kh\u00f4ng c\u00f3 bi\u1ec7n ph\u00e1p x\u1eed l\u00fd b\u1ed5 sung.<\/li><\/ol><h2 class=\"wp-block-heading\">H\u1ee3p t\u00e1c v\u1edbi SteelPro Group \u0111\u1ec3 c\u00f3 th\u00e9p 8740 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u<\/h2><p class=\"wp-block-paragraph\">SteelPro Group t\u1ef1 h\u00e0o cung c\u1ea5p th\u00e9p AISI 8740 ch\u1ea5t l\u01b0\u1ee3ng cao nh\u1ea5t, \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t c\u1ee7a ng\u00e0nh. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nh\u01b0 <a href=\"https:\/\/steelprogroup.com\/vi\/special-steel\/aisi-4140\/\">t\u1ea5m c\u00e1n n\u00f3ng 4140<\/a>\u0110\u1ed9i ng\u0169 gi\u00e0u kinh nghi\u1ec7m c\u1ee7a ch\u00fang t\u00f4i lu\u00f4n s\u1eb5n s\u00e0ng cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p v\u00e0 h\u1ed7 tr\u1ee3 ph\u00f9 h\u1ee3p cho m\u1ecdi nhu c\u1ea7u v\u1ec1 th\u00e9p c\u1ee7a b\u1ea1n. Ch\u00fang t\u00f4i cung c\u1ea5p:<\/p><ul class=\"wp-block-list\"><li><strong>C\u1eaft theo y\u00eau c\u1ea7u<\/strong>: \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf theo y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng ch\u00ednh x\u00e1c.<\/li>\n\n<li><strong>X\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/strong>: Bao g\u1ed3m th\u1ea5m cacbon, th\u1ea5m nit\u01a1 v\u00e0 ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7.<\/li>\n\n<li><strong>X\u1eed l\u00fd nhi\u1ec7t<\/strong>: L\u00e0m ngu\u1ed9i, ram v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc mong mu\u1ed1n.<\/li>\n\n<li><strong>Gia c\u00f4ng<\/strong>: Gia c\u00f4ng ch\u00ednh x\u00e1c c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee9c t\u1ea1p, bao g\u1ed3m ti\u1ec7n, phay v\u00e0 m\u00e0i c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 tr\u1ee5c, b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c xe.<\/li><\/ul><p class=\"wp-block-paragraph\">H\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1ch AISI 8740 c\u00f3 th\u1ec3 cung c\u1ea5p s\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 b\u1ec1n cho d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a b\u1ea1n.<\/p>","protected":false},"excerpt":{"rendered":"<p>When selecting the ideal material for high-stress applications, AISI 8740 steel is a top contender. This alloy steel is specifically [&hellip;]<\/p>","protected":false},"author":12,"featured_media":21359,"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-21364","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\/21364","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=21364"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21364\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/21359"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=21364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=21364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=21364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}