{"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\/ja\/alloy-steel\/8740-steel\/","title":{"rendered":"AISI 8740 \u5408\u91d1\u92fc | UNS G87400 \u92fc\u68d2"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u9ad8\u5fdc\u529b\u7528\u9014\u306b\u6700\u9069\u306a\u6750\u6599\u3092\u9078\u629e\u3059\u308b\u5834\u5408\u3001AISI 8740 \u92fc\u304c\u6700\u6709\u529b\u5019\u88dc\u3067\u3059\u3002\u3053\u306e\u5408\u91d1\u92fc\u306f\u3001\u6700\u3082\u904e\u9177\u306a\u6761\u4ef6\u306b\u8010\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u7279\u5225\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p><p class=\"wp-block-paragraph\">\u3067\u306f\u3001AISI 8740 \u304c\u306a\u305c\u305d\u308c\u307b\u3069\u4fe1\u983c\u3067\u304d\u308b\u306e\u3067\u3057\u3087\u3046\u304b? \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001AISI 8740 \u92fc\u306e\u7279\u6027\u3068\u88fd\u54c1\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002&nbsp;<\/p><p class=\"wp-block-paragraph\">SteelPro Group \u306f\u3001\u9ad8\u54c1\u8cea\u306e\u6750\u6599\u3068\u5c02\u9580\u5bb6\u306b\u3088\u308b\u30b5\u30dd\u30fc\u30c8\u306b\u6ce8\u529b\u3057\u3066\u304a\u308a\u3001\u304a\u5ba2\u69d8\u306e\u7279\u5b9a\u306e\u30cb\u30fc\u30ba\u306b\u6700\u9069\u306a AISI 8740 \u92fc\u3092\u304a\u5c4a\u3051\u3067\u304d\u308b\u3088\u3046\u52aa\u3081\u3066\u3044\u307e\u3059\u3002<\/p><h2 class=\"wp-block-heading\">8740 \u30b9\u30c1\u30fc\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b?<\/h2><p class=\"wp-block-paragraph\">AISI 8740 \u92fc\u306f\u3001\u9ad8\u5f37\u5ea6\u3001\u4f4e\u5408\u91d1\u92fc\u3067\u3059\u3002Cr \u3068 Ni \u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u8010\u8150\u98df\u6027\u304c\u5411\u4e0a\u3057\u3001Mo \u306b\u3088\u308a\u9ad8\u6e29\u3067\u306e\u6027\u80fd\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u3053\u306e\u92fc\u306f\u6469\u8017\u3001\u75b2\u52b4\u3001\u885d\u6483\u306b\u8010\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30ae\u30a2\u3001\u30b7\u30e3\u30d5\u30c8\u3001\u30d5\u30a1\u30b9\u30ca\u30fc\u306a\u3069\u306e\u91cd\u8981\u306a\u7528\u9014\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6a5f\u68b0\u52a0\u5de5\u6027\u306b\u512a\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7cbe\u5bc6\u3067\u8907\u96d1\u306a\u90e8\u54c1\u306b\u6210\u5f62\u3067\u304d\u307e\u3059\u3002<\/p><h2 class=\"wp-block-heading\">8740\u92fc\u306e\u5316\u5b66\u6210\u5206<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u8981\u7d20<\/strong><\/td><td><strong>\u30b3\u30f3\u30c6\u30f3\u30c4(wt%)<\/strong><\/td><\/tr><tr><td>\u30ab\u30fc\u30dc\u30f3\uff08C\uff09<\/td><td>0.38~0.43<\/td><\/tr><tr><td>\u30b1\u30a4\u7d20 (Si)<\/td><td>0.15~0.35<\/td><\/tr><tr><td>\u30de\u30f3\u30ac\u30f3 (Mn)<\/td><td>0.75~1.00<\/td><\/tr><tr><td>\u30ea\u30f3 (P)<\/td><td>\u22640.035<\/td><\/tr><tr><td>\u786b\u9ec4\uff08S\uff09<\/td><td>\u22640.04<\/td><\/tr><tr><td>\u30af\u30ed\u30e0\uff08Cr\uff09<\/td><td>0.4~0.6<\/td><\/tr><tr><td>\u30cb\u30c3\u30b1\u30eb\uff08Ni\uff09<\/td><td>0.4~0.7<\/td><\/tr><tr><td>\u30e2\u30ea\u30d6\u30c7\u30f3 (Mo)<\/td><td>0.2~0.3<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740\u92fc\u306e\u6a5f\u68b0\u7684\u6027\u8cea<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/td><td><strong>\u30e1\u30c8\u30ea\u30c3\u30af\u5024<\/strong><\/td><td><strong>\u30a4\u30f3\u30da\u30ea\u30a2\u30eb\u30fb\u30d0\u30ea\u30e5\u30fc<\/strong><\/td><\/tr><tr><td>\u786c\u5ea6\u3001\u30d6\u30ea\u30cd\u30eb<\/td><td>269 HB<\/td><td>269 HB<\/td><\/tr><tr><td>\u786c\u5ea6\u3001\u30cc\u30fc\u30d7<\/td><td>294\u9999\u6e2f\u30c9\u30eb<\/td><td>294\u9999\u6e2f\u30c9\u30eb<\/td><\/tr><tr><td>\u786c\u5ea6\u3001\u30ed\u30c3\u30af\u30a6\u30a7\u30ebB<\/td><td>99 HR<\/td><td>99 HR<\/td><\/tr><tr><td>\u786c\u5ea6\u3001\u30ed\u30c3\u30af\u30a6\u30a7\u30ebC<\/td><td>27HRC<\/td><td>27HRC<\/td><\/tr><tr><td>\u786c\u5ea6\u3001\u30d3\u30c3\u30ab\u30fc\u30b9<\/td><td>284 \u30d8\u30eb\u30c4<\/td><td>287 \u30d8\u30eb\u30c4<\/td><\/tr><tr><td>\u5f15\u5f35\u5f37\u3055\u3001\u6975\u9650<\/td><td>938MPa<\/td><td>136,000 psi<\/td><\/tr><tr><td>\u5f15\u5f35\u5f37\u5ea6\u3001\u964d\u4f0f\u5f37\u5ea6<\/td><td>620MPa<\/td><td>89,900 psi<\/td><\/tr><tr><td>\u7834\u65ad\u4f38\u5ea6<\/td><td>0.16<\/td><td>0.16<\/td><\/tr><tr><td>\u5f3e\u6027\u4fc2\u6570<\/td><td>205GPa<\/td><td>29,700 ksi<\/td><\/tr><tr><td>\u4f53\u7a4d\u5f3e\u6027\u7387<\/td><td>160GPa<\/td><td>23,200 ksi<\/td><\/tr><tr><td>\u30dd\u30a2\u30bd\u30f3\u6bd4<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>\u52a0\u5de5\u6027<\/td><td>0.65<\/td><td>0.65<\/td><\/tr><tr><td>\u305b\u3093\u65ad\u5f3e\u6027\u4fc2\u6570<\/td><td>80.0 \u4e07\u6c17\u5727<\/td><td>11,600 ksi<\/td><\/tr><tr><td>\u30a2\u30a4\u30be\u30c3\u30c9\u30a4\u30f3\u30d1\u30af\u30c8<\/td><td>18.0 \u30b8\u30e5\u30fc\u30eb<\/td><td>13.3 \u30d5\u30a3\u30fc\u30c8\u30dd\u30f3\u30c9<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740 \u92fc\u306e\u7269\u7406\u7684\u7279\u6027<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/td><td><strong>\u30e1\u30c8\u30ea\u30c3\u30af\u5024<\/strong><\/td><td><strong>\u30a4\u30f3\u30da\u30ea\u30a2\u30eb\u30fb\u30d0\u30ea\u30e5\u30fc<\/strong><\/td><\/tr><tr><td>\u5bc6\u5ea6<\/td><td>7.85 g\/cm\u00b3<\/td><td>0.284 lb\/in\u00b3<\/td><\/tr><tr><td>\u878d\u70b9<\/td><td>1425-1510\u00b0C<\/td><td>2597-2750\u00b0F<\/td><\/tr><tr><td>\u71b1\u4f1d\u5c0e\u7387<\/td><td>40 W\/m-K<\/td><td>23.2 BTU\u00b7ft\/hr\u00b7\u00b0F\/in<\/td><\/tr><tr><td>\u6bd4\u71b1\u5bb9\u91cf<\/td><td>0.475 J\/g\u00b7\u00b0C<\/td><td>0.114 BTU\/\u30dd\u30f3\u30c9\u00b7\u00b0F<\/td><\/tr><tr><td>\u71b1\u4f1d\u5c0e\u7387<\/td><td>46.6W\/m\u00b7K<\/td><td>323 BTU\u00b7\u30a4\u30f3\u30c1\/\u6642\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">8740 \u92fc\u6750\u7528\u9014<\/h2><ul class=\"wp-block-list\"><li>\u30ae\u30a2<\/li>\n\n<li>\u30b7\u30e3\u30d5\u30c8<\/li>\n\n<li>\u30d5\u30a1\u30b9\u30ca\u30fc<\/li>\n\n<li>\u30af\u30e9\u30f3\u30af\u30b7\u30e3\u30d5\u30c8<\/li>\n\n<li>\u8eca\u8ef8<\/li>\n\n<li>\u30ed\u30fc\u30e9\u30fc\u30d9\u30a2\u30ea\u30f3\u30b0<\/li><\/ul><p class=\"wp-block-paragraph\">\u5f53\u793e\u306f\u5927\u624b\u30e1\u30fc\u30ab\u30fc\u3068\u63d0\u643a\u3057\u3001\u822a\u7a7a\u5b87\u5b99\u3001\u81ea\u52d5\u8eca\u3001\u5de5\u696d\u7528\u9014\u5411\u3051\u306e\u9ad8\u54c1\u8cea AISI 8740 \u92fc\u3092\u4f9b\u7d66\u3057\u3066\u3044\u307e\u3059\u3002\u5f53\u793e\u306e\u7d20\u6750\u306f\u3001\u6027\u80fd\u3068\u8010\u4e45\u6027\u306b\u95a2\u3059\u308b\u53b3\u683c\u306a\u696d\u754c\u57fa\u6e96\u3092\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\u3002&nbsp;<\/p><h2 class=\"wp-block-heading\">8740 \u92fc\u88fd\u54c1\u306e\u5f62\u72b6\u3068\u30b5\u30a4\u30ba<\/h2><p class=\"wp-block-paragraph\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u92fc\u6750\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u30028740 \u92fc\u6750\u306f\u3001\u304a\u5ba2\u69d8\u306e\u30cb\u30fc\u30ba\u306b\u5408\u308f\u305b\u305f\u3055\u307e\u3056\u307e\u306a\u88fd\u54c1\u5f62\u72b6\u3068\u30b5\u30a4\u30ba\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002SteelPro Group \u3067\u306f\u3001\u304a\u5ba2\u69d8\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5fc5\u8981\u306a\u6b63\u78ba\u306a\u5bf8\u6cd5\u3092\u78ba\u5b9f\u306b\u5f97\u3089\u308c\u308b\u3088\u3046\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u30b5\u30a4\u30ba \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p><h3 class=\"wp-block-heading\">\u4e38\u68d2<\/h3><ul class=\"wp-block-list\"><li>\u76f4\u5f84: 6.35 mm ~ 254 mm (0.25 \u30a4\u30f3\u30c1 ~ 10 \u30a4\u30f3\u30c1)<\/li><\/ul><h3 class=\"wp-block-heading\">\u30b9\u30af\u30a8\u30a2\u30d0\u30fc<\/h3><ul class=\"wp-block-list\"><li>\u30b5\u30a4\u30ba: 6.35 mm ~ 152 mm (0.25 \u30a4\u30f3\u30c1 ~ 6 \u30a4\u30f3\u30c1)<\/li><\/ul><h3 class=\"wp-block-heading\">\u30d5\u30e9\u30c3\u30c8\u30d0\u30fc<\/h3><ul class=\"wp-block-list\"><li>\u5e45: 12.7 mm ~ 305 mm (0.5 \u30a4\u30f3\u30c1 ~ 12 \u30a4\u30f3\u30c1)<\/li>\n\n<li>\u539a\u3055: 6.35 mm ~ 50.8 mm (0.25 \u30a4\u30f3\u30c1 ~ 2 \u30a4\u30f3\u30c1)<\/li><\/ul><h3 class=\"wp-block-heading\">\u30d7\u30ec\u30fc\u30c8<\/h3><ul class=\"wp-block-list\"><li>\u539a\u3055: 6.35 mm ~ 101.6 mm (0.25 \u30a4\u30f3\u30c1 ~ 4 \u30a4\u30f3\u30c1)<\/li>\n\n<li>\u5e45: 305 mm ~ 3048 mm (12 \u30a4\u30f3\u30c1 ~ 120 \u30a4\u30f3\u30c1)<\/li>\n\n<li>\u9577\u3055: 3048 mm ~ 12192 mm (120 \u30a4\u30f3\u30c1 ~ 480 \u30a4\u30f3\u30c1)<\/li><\/ul><h2 class=\"wp-block-heading\">AISI 8740 \u92fc\u306e\u4ed5\u69d8<\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u30ab\u30c6\u30b4\u30ea\u30fc<\/strong><\/td><td><strong>\u4ed5\u69d8<\/strong><\/td><\/tr><tr><td>\u30a2\u30e0\u30b9<\/td><td>AMS 6322\u3001AMS 6322F\u3001AMS 6323\u3001AMS 6323D\u3001AMS 6325\u3001AMS 6325D\u3001AMS 6327D\u3001AMS 6358\u3001AMS 6358B\u3001AMS 6327\u3001AMS 7496<\/td><\/tr><tr><td>ASTM<\/td><td>ASTM A322\u3001ASTM A331\u3001ASTM A505\u3001ASTM A519\u3001ASTM A29\u3001ASTM A752\u3001ASTM A320 (L7C\u3001L73)<\/td><\/tr><tr><td>\u30b5\u30a6\u30b8\u30a2\u30e9\u30d3\u30a2<\/td><td>SAE J770\u3001SAE J412\u3001SAE J1397\u3001SAE J404<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">AISI 8740\u92fc\u306e\u4e3b\u306a\u7279\u5fb4<\/h2><h3 class=\"wp-block-heading\">\u30e1\u30ea\u30c3\u30c8<\/h3><ol class=\"wp-block-list\"><li><strong>\u512a\u308c\u305f\u5f37\u5ea6\u3068\u8010\u4e45\u6027<\/strong>AISI 8740 \u306f\u3001\u8981\u6c42\u306e\u53b3\u3057\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u512a\u308c\u305f\u5805\u7262\u6027\u3068\u8010\u4e45\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n<li><strong>\u8010\u6469\u8017\u6027\u3068\u8010\u75b2\u52b4\u6027<\/strong>: \u8010\u4e45\u6027\u306b\u512a\u308c\u3001\u7d99\u7d9a\u7684\u306a\u5727\u529b\u3084\u7e70\u308a\u8fd4\u3057\u306e\u4f7f\u7528\u306b\u3082\u5f37\u5ea6\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<\/li>\n\n<li><strong>\u8010\u98df\u6027<\/strong>: \u30af\u30ed\u30e0\u3068\u30cb\u30c3\u30b1\u30eb\u304c\u8010\u8150\u98df\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/li>\n\n<li><strong>\u826f\u597d\u306a\u52a0\u5de5\u6027<\/strong>: AISI 8740 \u306f\u9069\u5207\u306a\u5de5\u5177\u3092\u4f7f\u7528\u3059\u308c\u3070\u6a5f\u68b0\u52a0\u5de5\u3067\u304d\u307e\u3059\u3002<\/li><\/ol><h3 class=\"wp-block-heading\">\u30c7\u30e1\u30ea\u30c3\u30c8<\/h3><ol class=\"wp-block-list\"><li><strong>\u6eb6\u63a5\u306e\u554f\u984c<\/strong>: \u6eb6\u63a5\u3067\u306f\u3001\u7834\u640d\u3092\u9632\u304e\u3001\u6eb6\u63a5\u306e\u5b8c\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u9069\u5207\u306a\u4e88\u71b1\u3068\u6eb6\u63a5\u5f8c\u306e\u71b1\u51e6\u7406\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n\n<li><strong>\u30b3\u30b9\u30c8<\/strong>: \u5408\u91d1\u5143\u7d20\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u5358\u7d14\u306a\u92fc\u3088\u308a\u3082\u9ad8\u4fa1\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n<li><strong>\u4e0d\u9069\u5207\u306a\u71b1\u51e6\u7406\u306b\u3088\u308b\u8106\u3055<\/strong>: \u4e0d\u9069\u5207\u306a\u71b1\u51e6\u7406\u306f\u8106\u3055\u306e\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n\n<li><strong>\u9ad8\u6e29\u3067\u306e\u4f7f\u7528\u5236\u9650<\/strong>: \u8ffd\u52a0\u306e\u51e6\u7406\u3092\u884c\u308f\u306a\u3044\u3068\u3001\u6975\u7aef\u306b\u9ad8\u6e29\u306e\u74b0\u5883\u3067\u306f\u5341\u5206\u306a\u6027\u80fd\u3092\u767a\u63ee\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li><\/ol><h2 class=\"wp-block-heading\">\u6700\u9ad8\u54c1\u8cea\u306e 8740 \u92fc\u6750\u3092 SteelPro Group \u3068\u63d0\u643a\u3057\u3066\u5165\u624b<\/h2><p class=\"wp-block-paragraph\">SteelPro Group\u306f\u3001\u53b3\u683c\u306a\u696d\u754c\u57fa\u6e96\u3092\u6e80\u305f\u3059\u6700\u9ad8\u54c1\u8cea\u306eAISI 8740\u3092\u63d0\u4f9b\u3067\u304d\u308b\u3053\u3068\u3092\u8a87\u308a\u306b\u601d\u3063\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u6b21\u306e\u3088\u3046\u306a\u4ed6\u306e\u6750\u6599\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/steelprogroup.com\/ja\/special-steel\/aisi-4140\/\">\u71b1\u9593\u5727\u5ef64140\u677f<\/a>\u5f53\u793e\u306e\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30c1\u30fc\u30e0\u306f\u3001\u304a\u5ba2\u69d8\u306e\u3042\u3089\u3086\u308b\u9244\u92fc\u30cb\u30fc\u30ba\u306b\u5408\u308f\u305b\u305f\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u307e\u3059\u3002\u5f53\u793e\u306f\u4ee5\u4e0b\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p><ul class=\"wp-block-list\"><li><strong>\u30ab\u30b9\u30bf\u30e0\u30ab\u30c3\u30c8<\/strong>: \u304a\u5ba2\u69d8\u306e\u4ed5\u69d8\u306b\u5408\u308f\u305b\u3066\u6b63\u78ba\u306a\u30b5\u30a4\u30ba\u3068\u5f62\u72b6\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u307e\u3059\u3002<\/li>\n\n<li><strong>\u8868\u9762\u51e6\u7406<\/strong>: \u6d78\u70ad\u51e6\u7406\u3001\u7a92\u5316\u51e6\u7406\u3001\u4fdd\u8b77\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u51e6\u7406\u3092\u542b\u307f\u307e\u3059\u3002<\/li>\n\n<li><strong>\u71b1\u51e6\u7406<\/strong>: \u6240\u671b\u306e\u6a5f\u68b0\u7684\u7279\u6027\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u713c\u5165\u308c\u3001\u713c\u623b\u3057\u3001\u5fdc\u529b\u7de9\u548c\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n\n<li><strong>\u6a5f\u68b0\u52a0\u5de5<\/strong>: \u30b7\u30e3\u30d5\u30c8\u3001\u30ae\u30a2\u3001\u8eca\u8ef8\u306a\u3069\u306e\u90e8\u54c1\u306e\u65cb\u524a\u3001\u30d5\u30e9\u30a4\u30b9\u52a0\u5de5\u3001\u7814\u524a\u3092\u542b\u3080\u8907\u96d1\u306a\u90e8\u54c1\u306e\u7cbe\u5bc6\u52a0\u5de5\u3002<\/li><\/ul><p class=\"wp-block-paragraph\">AISI 8740 \u304c\u5f37\u5ea6\u3068\u8010\u4e45\u6027\u306b\u3088\u3063\u3066\u6b21\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u3069\u306e\u3088\u3046\u306b\u8ca2\u732e\u3067\u304d\u308b\u304b\u306b\u3064\u3044\u3066\u3001\u4eca\u3059\u3050\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/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\/ja\/wp-json\/wp\/v2\/posts\/21364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/comments?post=21364"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/posts\/21364\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/media\/21359"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/media?parent=21364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/categories?post=21364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/ja\/wp-json\/wp\/v2\/tags?post=21364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}