{"id":2422,"date":"2026-01-16T09:51:12","date_gmt":"2026-01-16T08:51:12","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=2422"},"modified":"2026-01-30T03:02:37","modified_gmt":"2026-01-30T02:02:37","slug":"monel-400-vs-copper-nickel-70-30","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ja\/monel-400-vs-copper-nickel-70-30\/","title":{"rendered":"\u30e2\u30cd\u30eb400\u5bfe\u9285\u30cb\u30c3\u30b1\u30eb70\/30\uff1a\u7a76\u6975\u306e\u9078\u629e\u30ac\u30a4\u30c9"},"content":{"rendered":"<p><span data-markdown-start-index=\"781\">\u6d77\u6d0b\u5de5\u5b66\u3084\u5316\u5b66\u51e6\u7406\u3068\u3044\u3063\u305f\u8981\u6c42\u306e\u53b3\u3057\u3044\u5206\u91ce\u3067\u306f\u3001\u6750\u6599\u306e\u4e0d\u5177\u5408\u3068\u3044\u3046\u9078\u629e\u80a2\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u975e\u9244\u4e16\u754c\u306e2\u3064\u306e\u5de8\u982d\u306e\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u3068\u3044\u3046\u30b8\u30ec\u30f3\u30de\u306b\u3057\u3070\u3057\u3070\u76f4\u9762\u3059\u308b\uff1a <\/span><strong><span data-markdown-start-index=\"984\"><a href=\"https:\/\/www.nickelcasting.com\/pt\/ligas-de-niquel\/ligas-metalicas-de-monel\/monel-400\/\">\u30e2\u30cd\u30eb400<\/a><\/span><\/strong><span data-markdown-start-index=\"995\"> (UNS N04400)\u3068 <\/span><strong><span data-markdown-start-index=\"1015\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"1036\"> (C71500). <\/span><span data-markdown-start-index=\"1077\">\u3069\u3061\u3089\u3082\u9285\u3068\u30cb\u30c3\u30b1\u30eb\u306e\u76f8\u4e57\u52b9\u679c\u3067\u8150\u98df\u306b\u5bfe\u6297\u3057\u3066\u3044\u308b\u304c\u3001\u305d\u306e\u7d44\u6210\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u6027\u80fd\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u5927\u304d\u304f\u7570\u306a\u308b\u3002.<\/span><\/p>\n<p><span data-markdown-start-index=\"1250\">\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u6280\u8853\u7684\u306a\u5185\u8a33\u3092\u8aac\u660e\u3057\u307e\u3059\u3002 <\/span><strong><span data-markdown-start-index=\"1309\">\u30e2\u30cd\u30eb400 vs \u9285-\u30cb\u30c3\u30b1\u30eb70\/30<\/span><\/strong><span data-markdown-start-index=\"1343\"> \u30c7\u30a3\u30d9\u30fc\u30c8\u306f\u3001\u30b3\u30b9\u30c8\u3001\u5bff\u547d\u3001\u6a5f\u68b0\u7684\u5b8c\u5168\u6027\u3092\u6700\u9069\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-2423\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213.jpg\" alt=\"\" width=\"1200\" height=\"655\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213.jpg 1200w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-300x164.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-1024x559.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-768x419.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h3 class=\"\"><span data-markdown-start-index=\"1454\">\u30e2\u30cd\u30eb400\u3068Cu-Ni 70\/30\u306e\u6bd4\u8f03<\/span><\/h3>\n<p><span data-markdown-start-index=\"1516\">The fundamental difference lies in the &#8220;base&#8221; metal. <\/span><strong><span data-markdown-start-index=\"1571\">\u30e2\u30cd\u30eb400<\/span><\/strong><span data-markdown-start-index=\"1582\"> \u306f\u30cb\u30c3\u30b1\u30eb\u57fa\u5408\u91d1\uff08\u30cb\u30c3\u30b1\u30eb\u7d0463\uff5e70%\u3001\u9285\u7d0430%\uff09\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057 <\/span><strong><span data-markdown-start-index=\"1654\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"1675\"> \u306f\u9285\u30d9\u30fc\u30b9\u3067\u3042\u308b\uff0870% \u9285\u300130% \u30cb\u30c3\u30b1\u30eb\uff09\u3002\u3053\u306e\u6bd4\u7387\u306e\u9006\u8ee2\u304c\u3001\u6a5f\u68b0\u7684\u306a\u9650\u754c\u3092\u6c7a\u3081\u3066\u3044\u308b\u3002.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"1779\">\u6a5f\u68b0\u7684\u5f37\u5ea6\u3068\u8010\u4e45\u6027<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"1813\">\u30e2\u30cd\u30eb400\u306f\u3001\u7d14\u7c8b\u306a\u5f37\u5ea6\u3067\u306f\u660e\u3089\u304b\u306b\u52dd\u8005\u3067\u3042\u308b\u3002\u56fa\u6eb6\u4f53\u4e8c\u5143\u5408\u91d1\u3068\u3057\u3066\u300170-120 ksi (480-830 MPa)\u306e\u5f15\u5f35\u5f37\u5ea6\u3092\u8a87\u308a\u3001\u901a\u5e3850-60 ksi\u7a0b\u5ea6\u306b\u4f4d\u7f6e\u3059\u308bCu-Ni 70\/30\u306e\u307b\u307c2\u500d\u3067\u3059\u3002\u9ad8\u5727\u30d0\u30eb\u30d6\u30b9\u30c6\u30e0\u3084\u30c8\u30eb\u30af\u306e\u304b\u304b\u308b\u30dd\u30f3\u30d7\u30b7\u30e3\u30d5\u30c8\u306a\u3069\u306e\u7528\u9014\u3067\u306f\u3001Monel 400\u306fCu-Ni\u3067\u306f\u5f97\u3089\u308c\u306a\u3044\u5fc5\u8981\u306a\u964d\u4f0f\u5f37\u5ea6\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"2196\">\u71b1\u7279\u6027<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"2216\">However, strength isn&#8217;t everything. <\/span><strong><span data-markdown-start-index=\"2254\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"2267\"> \u306f\u512a\u308c\u305f\u71b1\u4f1d\u5c0e\u6027\uff08\u7d0429W\/m\u30fbK\uff09\u3092\u4fdd\u6301\u3057\u3001\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u30c1\u30e5\u30fc\u30d6\u3084\u30b7\u30a7\u30eb\u30a2\u30f3\u30c9\u30c1\u30e5\u30fc\u30d6\u5f0f\u71b1\u4ea4\u63db\u5668\u306a\u3069\u306e\u4f1d\u71b1\u7528\u9014\u306b\u6700\u9069\u3067\u3059\u3002\u30e2\u30cd\u30eb400\u306f\u71b1\u7684\u306b\u5b89\u5b9a\u3057\u3066\u3044\u308b\u304c\u3001\u71b1\u4f1d\u5c0e\u6027\u306f\u4f4e\u304f\u3001\u4f1d\u71b1\u9762\u3088\u308a\u3082\u69cb\u9020\u90e8\u54c1\u306b\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002.<\/span><\/p>\n<table style=\"border-collapse: collapse; width: 451.52pt;\" border=\"0\" width=\"602\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 113.25pt;\" width=\"151\" height=\"18\">\u7279\u5fb4<\/td>\n<td style=\"width: 125.25pt;\" width=\"167\">\u30e2\u30cd\u30eb400 (UNS N04400)<\/td>\n<td style=\"width: 213.00pt;\" width=\"284\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30 (C71500)<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\">\u30d9\u30fc\u30b9\u30e1\u30bf\u30eb<\/td>\n<td>\u30cb\u30c3\u30b1\u30eb\uff08\uff5e67%\uff09<\/td>\n<td>\u9285\uff08\uff5e70%\uff09<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\">\u5f15\u5f35\u5f37\u5ea6<\/td>\n<td>\u30cf\u30a4\uff08\u5e73\u574780,000 psi\uff09<\/td>\n<td>\u4e2d\u7a0b\u5ea6\uff08\u5e73\u574755,000 psi\uff09<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\">\u786c\u5ea6<\/td>\n<td>\u9ad8\u3044\uff08\u30ed\u30c3\u30af\u30a6\u30a7\u30ebB 60-80\uff09<\/td>\n<td>\u4e2d\u7a0b\u5ea6\uff08\u30ed\u30c3\u30af\u30a6\u30a7\u30ebB 40-50\uff09<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\">\u30b3\u30b9\u30c8<\/td>\n<td>\u30cf\u30a4\uff08\u30d7\u30ec\u30df\u30a2\u30e0\u5408\u91d1\uff09<\/td>\n<td>\u4e2d\u7a0b\u5ea6\uff08\u8cbb\u7528\u5bfe\u52b9\u679c\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span data-markdown-start-index=\"2969\">\u30e2\u30cd\u30eb400 vs Cu-Ni 70\/30 \u9078\u3073\u65b9<\/span><\/h3>\n<p><span data-markdown-start-index=\"3035\">\u3053\u306e2\u3064\u306e\u5408\u91d1\u306e\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30d0\u30e9\u30f3\u30b9\u306e\u554f\u984c\u3067\u3042\u308b\u3002 <\/span><strong><span data-markdown-start-index=\"3102\">\u4e88\u7b97\u5236\u7d04<\/span><\/strong><span data-markdown-start-index=\"3122\"> \u306b\u5bfe\u3057\u3066 <\/span><strong><span data-markdown-start-index=\"3133\">\u74b0\u5883\u5f37\u5ea6<\/span><\/strong><span data-markdown-start-index=\"3158\">.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"3162\">1.\u8cbb\u7528\u4fbf\u76ca\u5206\u6790<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"3192\">\u30e2\u30cd\u30eb400\u306f\u3001\u30cb\u30c3\u30b1\u30eb\u306e\u5e02\u5834\u4fa1\u683c\u304c\u9ad8\u3044\u305f\u3081\u3001Cu-Ni 70\/30\u3088\u308a\u3082\u304b\u306a\u308a\u9ad8\u4fa1\u3067\u3042\u308b\u3002\u30ad\u30ed\u30e1\u30fc\u30c8\u30eb\u306b\u53ca\u3076\u5927\u898f\u6a21\u306a\u914d\u7ba1\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7528\u3001, <\/span><strong><span data-markdown-start-index=\"3346\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"3359\"> is the standard economical choice. It offers a &#8220;good enough&#8221; lifespan for general seawater piping without the exorbitant cost of Monel. Use Monel 400 selectively for critical failure points\u2014valves, instrumentation, and fasteners\u2014where replacement is difficult.<\/span><\/p>\n<p><strong class=\"\"><span data-markdown-start-index=\"3654\">2.\u88fd\u9020\u3068\u52a0\u5de5<\/span><\/strong><\/p>\n<p class=\"\"><span data-markdown-start-index=\"3715\">\u5927\u898f\u6a21\u306a\u6eb6\u63a5\u3084\u6210\u5f62\u304c\u5fc5\u8981\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\u3001, <\/span><strong><span data-markdown-start-index=\"3773\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"3786\"> \u306f\u3001\u4e00\u822c\u306b\u3088\u308a\u5bdb\u5bb9\u3067\u52a0\u5de5\u304c\u5bb9\u6613\u3067\u3042\u308b\u3002\u30e2\u30cd\u30eb400\u306f\u6eb6\u63a5\u304c\u53ef\u80fd\u3060\u304c\u3001\u8106\u5316\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u53b3\u5bc6\u306a\u6e05\u6d44\u5ea6\u3068\u3001\u305d\u306e\u5f37\u5ea6\u306b\u898b\u5408\u3046\u7279\u5b9a\u306e\u308d\u3046\u6750\uff08\u30e2\u30cd\u30eb60\u306a\u3069\uff09\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"3992\">\u610f\u601d\u6c7a\u5b9a\u30de\u30c8\u30ea\u30c3\u30af\u30b9\uff1a<\/span><\/strong><\/p>\n<ul>\n<li><strong><span data-markdown-start-index=\"4047\">\u4ee5\u4e0b\u306e\u5834\u5408\u306f\u30e2\u30cd\u30eb400\u3092\u9078\u629e\u3059\u308b\uff1a<\/span><\/strong><span data-markdown-start-index=\"4069\"> \u9ad8\u3044\u5f37\u5ea6\u3001\u9ad8\u901f\u4fb5\u98df\u306b\u5bfe\u3059\u308b\u8010\u6027\u3001\u30d5\u30c3\u5316\u6c34\u7d20\u9178\u306e\u3088\u3046\u306a\u904e\u9177\u306a\u5316\u5b66\u85ac\u54c1\u3078\u306e\u8010\u6027\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/span><\/li>\n<li><strong><span data-markdown-start-index=\"4218\">Cu-Ni 70\/30\u3092\u9078\u629e\u3059\u308b\uff1a<\/span><\/strong><span data-markdown-start-index=\"4242\"> \u71b1\u4ea4\u63db\u5668\u306e\u8a2d\u8a08\u3001\u81ea\u7136\u306a\u751f\u7269\u4ed8\u7740\u62b5\u6297\u6027\u306e\u5fc5\u8981\u6027\u3001\u9759\u6b62\u6d77\u6c34\u30e9\u30a4\u30f3\u7528\u306e\u8cbb\u7528\u5bfe\u52b9\u679c\u306e\u9ad8\u3044\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/span><\/li>\n<\/ul>\n<h3><img decoding=\"async\" class=\"aligncenter size-full wp-image-2424\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113.jpg\" alt=\"\" width=\"1200\" height=\"655\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113.jpg 1200w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113-300x164.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113-1024x559.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113-768x419.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/22113-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/h3>\n<h3><span data-markdown-start-index=\"4413\">\u6d77\u6c34\u8150\u98df\u306b\u5bfe\u3059\u308b\u30e2\u30cd\u30eb400\u3068Cu-Ni\u306e\u6bd4\u8f03<\/span><\/h3>\n<p><span data-markdown-start-index=\"4482\">\u3053\u3053\u304c\u91cd\u8981\u306a\u6226\u5834\u3060\u3002. <\/span><span data-markdown-start-index=\"4548\">While both are &#8220;marine grade,&#8221; they interact with seawater differently.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"4649\">\u901f\u5ea6\u3068\u4fb5\u98df<\/span><\/strong><br \/>\n<strong><span data-markdown-start-index=\"4673\">\u30e2\u30cd\u30eb400<\/span><\/strong><span data-markdown-start-index=\"4684\"> \u306f\u9ad8\u901f\u5ea6\u74b0\u5883\u306e\u738b\u8005\u3067\u3042\u308b\u3002\u4fb5\u98df\u8150\u98df\u306b\u60a9\u307e\u3055\u308c\u308b\u3053\u3068\u306a\u304f\u3001\u6025\u901f\u306b\u6d41\u308c\u308b\u6d77\u6c34\uff08\u5834\u5408\u306b\u3088\u3063\u3066\u306f45m\/s\u307e\u3067\uff09\u306e\u4e2d\u3067\u7e41\u6804\u3059\u308b\u3002\u305d\u306e\u305f\u3081 <\/span><strong><span data-markdown-start-index=\"4864\">\u30dd\u30f3\u30d7\u7fbd\u6839\u8eca<\/span><\/strong><span data-markdown-start-index=\"4880\">, \u30d7\u30ed\u30da\u30e9\u3001\u30d0\u30a6\u30b9\u30e9\u30b9\u30bf\u30fc\u3002.<\/span><br \/>\n<span data-markdown-start-index=\"4912\">\u305d\u306e\u9006\u3082\u3042\u308b\u3001, <\/span><strong><span data-markdown-start-index=\"4926\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"4939\"> \u306b\u306f\u4e71\u6d41\u9650\u754c\u304c\u3042\u308b\u3002\u5b89\u4fa1\u306a90\/10\u30b0\u30ec\u30fc\u30c9\u3088\u308a\u3082\u6d41\u308c\u306b\u3088\u304f\u5bfe\u5fdc\u3059\u308b\u304c\u3001\u305d\u308c\u3067\u3082\u6c34\u6d41\u304c3\uff5e4m\/s\u3092\u8d85\u3048\u308b\u3068\u30a4\u30f3\u30d4\u30f3\u30b8\u30e1\u30f3\u30c8\u653b\u6483\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"5099\">\u751f\u7269\u4ed8\u7740\u62b5\u6297\u6027<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"5122\">\u3053\u3053\u3060\u3088\u3001, <\/span><strong><span data-markdown-start-index=\"5130\">\u9285-\u30cb\u30c3\u30b1\u30eb 70\/30<\/span><\/strong><span data-markdown-start-index=\"5151\"> \u306b\u306f\u72ec\u81ea\u306e\u5229\u70b9\u304c\u3042\u308b\u3002\u9285\u306e\u542b\u6709\u91cf\u304c\u9ad8\u3044\u305f\u3081\u3001\u904a\u96e2\u9285\u30a4\u30aa\u30f3\u304c\u6c34\u306e\u5883\u754c\u5c64\u306b\u653e\u51fa\u3055\u308c\u3001\u30d5\u30b8\u30c4\u30dc\u3084\u85fb\u985e\uff08\u751f\u7269\u4ed8\u7740\uff09\u306e\u7e41\u6b96\u3092\u81ea\u7136\u306b\u6291\u5236\u3059\u308b\u3002.<\/span><br \/>\n<strong><span data-markdown-start-index=\"5340\">\u30e2\u30cd\u30eb400<\/span><\/strong><span data-markdown-start-index=\"5351\">, being nickel-dominant, does not possess this anti-fouling property. Marine organisms will grow on Monel surfaces. While the Monel underneath won&#8217;t corrode, the buildup can cause flow blockages or crevice corrosion issues if not cleaned.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"5592\">\u505c\u6ede\u3057\u305f\u6c34\u306e\u72b6\u614b<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"5619\">\u30e2\u30cd\u30eb400\u306f\u3001\u505c\u6ede\u3057\u305f\u6c34\u3084\u6d41\u308c\u306e\u7de9\u6162\u306a\u6c34\u4e2d\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u3044\u3002 <\/span><strong><span data-markdown-start-index=\"5687\">\u5b54\u98df<\/span><\/strong><span data-markdown-start-index=\"5706\">, Cu-Ni70\/30\u306f\u3001\u7279\u306b\u751f\u7269\u6c5a \u67d3\u306b\u3088\u3063\u3066\u9699\u9593\u304c\u3067\u304d\u308b\u5834\u5408\u306b\u6709\u52b9\u3067\u3042\u308b\u3002Cu-Ni 70\/30\u306f\u3001\u4e00\u822c\u7684\u306b\u9759\u304b\u306a\u6c34\u57df\u3067\u3088\u308a\u5b54\u98df\u306b\u5f37\u304f\u3001\u65ad\u7d9a\u7684\u306a\u6d41\u308c\u306e\u3042\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u3068\u3063\u3066\u3088\u308a\u5b89\u5168\u3067\u3042\u308b\u3002.<\/span><\/p>\n<h3><span data-markdown-start-index=\"5879\">\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/span><\/h3>\n<p><strong><span data-markdown-start-index=\"5914\">1.\u30e2\u30cd\u30eb400\u306f\u3001\u71b1\u4ea4\u63db\u5668\u306eCu-Ni 70\/30\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304b\uff1f<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"5972\">\u30e2\u30cd\u30eb400 <\/span><em><span data-markdown-start-index=\"5989\">\u7f36<\/span><\/em><span data-markdown-start-index=\"5993\"> \u306f\u3001Cu-Ni \u306b\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308b\u304c\u3001\u63a8\u5968\u3055 \u308c\u306a\u3044\u5834\u5408\u304c\u591a\u3044\u3002\u30e2\u30cd\u30eb\u306f\u71b1\u4f1d\u5c0e\u7387\u304c\u4f4e\u3044\u305f\u3081\u3001\u71b1\u4f1d\u9054\u52b9\u7387\u304c\u4f4e\u4e0b\u3059\u308b\u3002\u307e\u305f\u3001\u30b3\u30b9\u30c8\u304c\u5927\u5e45\u306b\u9ad8\u3044\u305f\u3081\u3001\u6975\u7aef\u306a\u5727\u529b\u3084\u5316\u5b66\u6c5a\u67d3\u7269\u8cea\uff08HF\u9178\u306a\u3069\uff09\u304c\u5b58\u5728\u3057\u306a\u3044\u9650\u308a\u3001\u30c1\u30e5\u30fc\u30d6\u306b\u4f7f\u7528\u3059\u308b\u306b\u306f\u4e0d\u7d4c\u6e08\u3067\u3042\u308b\u3002.<\/span><\/p>\n<p><strong class=\"\"><span data-markdown-start-index=\"6304\">2.<\/span><\/strong><strong class=\"\"><span data-markdown-start-index=\"6332\">\u30d7\u30ed\u30da\u30e9\u30b7\u30e3\u30d5\u30c8\u306b\u306f\u3069\u306e\u5408\u91d1\u304c\u826f\u3044\u3067\u3059\u304b\uff1f<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"6379\">\u30e2\u30cd\u30eb400\uff08\u307e\u305f\u306f\u305d\u306e\u6642\u52b9\u786c\u5316\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308b\u30e2\u30cd\u30ebK-500\uff09\u306f\u3001\u30b7\u30e3\u30d5\u30c8\u7528\u3068\u3057\u3066\u306f\u308b\u304b\u306b\u512a\u308c\u3066\u3044\u308b\u3002\u30d7\u30ed\u30da\u30e9\u30b7\u30e3\u30d5\u30c8\u306b\u304b\u304b\u308b\u9ad8\u30c8\u30eb\u30af\u8377\u91cd\u306b\u306f\u3001\u30e2\u30cd\u30eb\u306e\u9ad8\u3044\u5f15\u5f35\u5f37\u5ea6\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002Cu-Ni 70\/30\u306f\u3001\u30b7\u30e3\u30d5\u30c8\u306e\u3088\u3046\u306a\u9ad8\u5fdc\u529b\u306e\u69cb\u9020\u7528\u9014\u306b\u306f\u67d4\u3089\u304b\u3059\u304e\u308b\u3002.<\/span><\/p>\n<p><strong><span data-markdown-start-index=\"6628\">3.\u30e2\u30cd\u30eb400\u306f\u6d77\u6c34\u3067\u9306\u3073\u307e\u3059\u304b\uff1f<\/span><\/strong><br \/>\n<span data-markdown-start-index=\"6666\">Monel 400 is virtually immune to general &#8220;rusting&#8221; (iron oxide formation) and chloride stress-corrosion cracking in seawater. However, it may tarnish or turn green (patina) over time. In stagnant water, it can suffer from localized pitting, so it is best used in flowing systems.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>In the demanding realms of marine engineering and chemical processing, material failure is not an option. Engineers frequently face the dilemma of choosing between two titans of the non-ferrous world: Monel 400 (UNS N04400) and Copper-Nickel 70\/30 (C71500). While both rely on the synergy of copper and nickel to fight corrosion, their distinct compositions creates vastly different performance profiles. This guide provides a technical breakdown to resolve the Monel 400 vs Copper-Nickel 70\/30 debate, helping you optimize for cost, longevity, and mechanical integrity. Monel 400 vs Cu-Ni 70\/30 comparison The fundamental difference lies in the &#8220;base&#8221; metal. Monel 400 is a nickel-based alloy (approx. 63-70% Nickel, 30% Copper), whereas Copper-Nickel [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2423,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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 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!important}}\n\";s:2:\"js\";s:0:\"\";s:18:\"current_block_list\";a:8:{i:0;s:11:\"core\/search\";i:1;s:10:\"core\/group\";i:2;s:12:\"core\/heading\";i:3;s:17:\"core\/latest-posts\";i:4;s:20:\"core\/latest-comments\";i:5;s:13:\"core\/archives\";i:6;s:15:\"core\/categories\";i:7;s:10:\"core\/image\";}s:8:\"uag_flag\";b:0;s:11:\"uag_version\";s:10:\"1775896589\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_elementor_page_assets":["a:0:{}"],"_uag_css_file_name":["uag-css-2422.css"]},"uagb_featured_image_src":{"full":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213.jpg",1200,655,false],"thumbnail":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-150x150.jpg",150,150,true],"medium":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-300x164.jpg",300,164,true],"medium_large":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-768x419.jpg",768,419,true],"large":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-1024x559.jpg",1024,559,true],"1536x1536":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213.jpg",1200,655,false],"2048x2048":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213.jpg",1200,655,false],"trp-custom-language-flag":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/3213-18x10.jpg",18,10,true]},"uagb_author_info":{"display_name":"nickel","author_link":"https:\/\/www.nickelcasting.com\/ja\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"In the demanding realms of marine engineering and chemical processing, material failure is not an option. Engineers frequently face the dilemma of choosing between two titans of the non-ferrous world: Monel 400 (UNS N04400) and Copper-Nickel 70\/30 (C71500). While both rely on the synergy of copper and nickel to fight corrosion, their distinct compositions creates&hellip;","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2422","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/comments?post=2422"}],"version-history":[{"count":1,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2422\/revisions"}],"predecessor-version":[{"id":2425,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2422\/revisions\/2425"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media\/2423"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media?parent=2422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/categories?post=2422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/tags?post=2422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}