{"id":2711,"date":"2026-03-02T08:55:51","date_gmt":"2026-03-02T07:55:51","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=2711"},"modified":"2026-03-02T08:55:51","modified_gmt":"2026-03-02T07:55:51","slug":"incoloy-alloy-for-heat-exchanger","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ja\/incoloy-alloy-for-heat-exchanger\/","title":{"rendered":"\u306a\u305c\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1\u3092\u9ad8\u5869\u30d3\u306e\u71b1\u4ea4\u63db\u5668\u306b\u4f7f\u3046\u306e\u304b\uff1f"},"content":{"rendered":"<p data-path-to-node=\"3\">\u6700\u9069\u306a\u3082\u306e\u3092\u9078\u3076 <b data-path-to-node=\"3\" data-index-in-node=\"22\">\u71b1\u4ea4\u63db\u5668\u7528\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1<\/b> \u30e6\u30cb\u30c3\u30c8\u306b\u306f\u3001\u6a5f\u68b0\u7684\u5fdc\u529b\u3068\u5316\u5b66\u7684\u4fb5\u98df\u306e\u4ea4\u5dee\u70b9\u306b\u95a2 \u3059\u308b\u5fae\u5999\u306a\u7406\u89e3\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002\u9ad8\u6e29\u74b0\u5883\u307e\u305f\u306f\u5c40\u90e8\u7684\u306a\u5b54\u98df\u306b\u66dd\u3055\u308c\u308b\u30b7\u30b9 \u30c6\u30e0\u3067\u306f\u3001\u6a19\u6e96\u7684\u306a\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u5869\u5316\u7269 \u306b\u8d77\u56e0\u3059\u308b\u5fdc\u529b\u8150\u98df\u5272\u308c(SCC)\u306b\u3088\u3063\u3066\u7834\u640d\u3059 \u308b\u3053\u3068\u304c\u591a\u3044\u3002300\u30b7\u30ea\u30fc\u30ba\u92fc\u306b\u306f\u306a\u3044\u8010\u9178\u5316\u6027\u3068\u51b6\u91d1\u7684\u5b89\u5b9a\u6027 \u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u30a4\u30f3\u30b3\u30ed\u30a4\u30fb\u30b7\u30ea \u30fc\u30ba\u3001\u7279\u306b800\u3068825\u30b7\u30ea\u30fc\u30ba\u306b\u6ce8\u76ee\u3059\u308b\u3002\u305d\u306e\u79d8\u5bc6\u306f\u3001\u30cb\u30c3\u30b1\u30eb\u3001\u30af\u30ed\u30e0\u3001\u9244\u306e\u30d0\u30e9\u30f3\u30b9\u306b\u3042\u308a\u3001\u5b89\u5b9a\u5316\u306e\u305f\u3081\u306b\u3057\u3070\u3057\u3070\u30c1\u30bf\u30f3\u304c\u6dfb\u52a0\u3055\u308c\u308b\u3002.<\/p>\n<p data-path-to-node=\"3\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-2712\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/139.jpg\" alt=\"\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1\u3092\u9ad8\u5869\u5316\u7269\u71b1\u4ea4\u63db\u5668\u306b\u4f7f\u7528\u3059\u308b\u7406\u7531\" width=\"1024\" height=\"765\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/139.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/139-300x224.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/139-768x574.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/139-16x12.jpg 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3 data-path-to-node=\"4\">\u51b6\u91d1\u7684\u30a8\u30c3\u30b8\uff1a\u71b1\u5a92\u4f53\u306b\u304a\u3051\u308b800H\u3068825\u306e\u6bd4\u8f03<\/h3>\n<p data-path-to-node=\"5\">\u3092\u8a55\u4fa1\u3059\u308b\u3002 <b data-path-to-node=\"5\" data-index-in-node=\"20\">\u71b1\u4ea4\u63db\u5668\u7528\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1<\/b> \u306e\u7528\u9014\u3067\u306f\u3001\u57fa\u672c\u7684\u306b\u9ad8\u6e29\u30af\u30ea\u30fc\u30d7\u8010\u6027\u3068\u6c34\u7cfb\u8150\u98df\u4fdd\u8b77\u306e\u3069\u3061\u3089\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u3002.<\/p>\n<p data-path-to-node=\"6\">Incoloy 800H (UNS N08811) is the &#8220;workhorse&#8221; for high-temperature exchangers. Its carbon content is restricted to <span class=\"math-inline\" data-math=\"0.05\\%\" data-index-in-node=\"114\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.05%<\/span><\/span><\/span><\/span><\/span>\u2013<span class=\"math-inline\" data-math=\"0.10\\%\" data-index-in-node=\"121\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.10%<\/span><\/span><\/span><\/span><\/span>, \u305d\u3057\u3066\u3001\u9ad8\u6e29\u6eb6\u4f53\u5316\u713c\u920d\u3092\u884c\u3044\u3001\u7c97\u3044\u7c92\u5ea6\uff08ASTM 5\u307e\u305f\u306f\u305d\u308c\u4ee5\u4e0a\uff09\u3092\u78ba\u4fdd\u3059\u308b\u3002\u3053\u306e\u5fae\u7d30\u69cb\u9020\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30af\u30ea\u30fc\u30d7\u7834\u65ad\u5f37\u5ea6\u3092\u6700\u5927\u5316\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3042\u308b\u3002 <span class=\"math-inline\" data-math=\"600^\\circ\\text{C}\" data-index-in-node=\"308\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">60<\/span><span class=\"mord\">0<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mbin mtight\">\u2218<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mord text\"><span class=\"mord\">C<\/span><\/span><\/span><\/span><\/span><\/span>.<\/p>\n<p data-path-to-node=\"7\">\u305d\u306e\u9006\u3082\u3042\u308b\u3001, <a href=\"https:\/\/www.nickelcasting.com\/ko\/%eb%8b%88%ec%bc%88-%ed%95%a9%ea%b8%88\/%ec%9d%b8%ec%bd%94%eb%a1%9c%ec%9d%b4-%ea%b8%88%ec%86%8d-%ed%95%a9%ea%b8%88\/incoloy-825\/\">\u30a4\u30f3\u30b3\u30ed\u30a4825<\/a> (UNS N08825) is more of a &#8220;specialist&#8221; for aggressive chemical media. By increasing the nickel content to <span class=\"math-inline\" data-math=\"38\\%\" data-index-in-node=\"130\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">38%<\/span><\/span><\/span><\/span><\/span>\u2013<span class=\"math-inline\" data-math=\"46\\%\" data-index-in-node=\"135\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">46%<\/span><\/span><\/span><\/span><\/span> \u3068\u30e2\u30ea\u30d6\u30c7\u30f3(<span class=\"math-inline\" data-math=\"2.5\\%\" data-index-in-node=\"163\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2.5%<\/span><\/span><\/span><\/span><\/span>\u2013<span class=\"math-inline\" data-math=\"3.5\\%\" data-index-in-node=\"169\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3.5%<\/span><\/span><\/span><\/span><\/span>)\u3068\u9285(<span class=\"math-inline\" data-math=\"1.5\\%\" data-index-in-node=\"188\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1.5%<\/span><\/span><\/span><\/span><\/span>\u2013<span class=\"math-inline\" data-math=\"3.0\\%\" data-index-in-node=\"194\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3.0%<\/span><\/span><\/span><\/span><\/span>)\u3001\u3053\u306e\u5408\u91d1\u306f\u786b\u9178\u3084\u30ea\u30f3\u9178\u306e\u3088\u3046\u306a\u9084\u5143\u6027\u9178\u306b\u5bfe\u3057\u3066\u5353\u8d8a\u3057\u305f\u8010\u6027\u3092\u793a\u3057\u307e\u3059\u3002\u30b5\u30ef\u30fc\u30ac\u30b9\u3084\u6c5a\u67d3\u3055\u308c\u305f\u51b7\u5374\u6c34\u3092\u6271\u3046\u30b7\u30a7\u30eb\u30a2\u30f3\u30c9\u30c1\u30e5\u30fc\u30d6\u5f0f\u71b1\u4ea4\u63db\u5668\u3067\u306f\u3001825\u306f\u3057\u3070\u3057\u3070\u5b89\u5168\u306a\u51b6\u91d1\u7684\u9078\u629e\u80a2\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h3 data-path-to-node=\"8\">\u6bd4\u8f03\u6750\u6599\u7279\u6027<\/h3>\n<p data-path-to-node=\"9\">\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u4f1d\u71b1\u6a5f\u5668\u306b\u304a\u3051\u308b\u3053\u308c\u3089\u306e\u5408\u91d1\u306e\u6027\u80fd\u3092\u5b9a\u7fa9\u3059\u308b\u5316\u5b66\u7684\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3068\u6a5f\u68b0\u7684\u9650\u754c\u306e\u6982\u8981\u3067\u3059\u3002.<\/p>\n<table data-path-to-node=\"10\">\n<thead>\n<tr>\n<td><strong>\u30a8\u30ec\u30e1\u30f3\u30c8 \/ \u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/td>\n<td><strong>\u30a4\u30f3\u30b3\u30ed\u30a4800H (UNS N08811)<\/strong><\/td>\n<td><strong>\u30a4\u30f3\u30b3\u30ed\u30a4825 (UNS N08825)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"10,1,0,0\"><b data-path-to-node=\"10,1,0,0\" data-index-in-node=\"0\">\u30cb\u30c3\u30b1\u30eb\uff08Ni\uff09 %<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,1,1,0\">30.0 &#8211; 35.0<\/span><\/td>\n<td><span data-path-to-node=\"10,1,2,0\">38.0 &#8211; 46.0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,2,0,0\"><b data-path-to-node=\"10,2,0,0\" data-index-in-node=\"0\">\u30af\u30ed\u30e0\uff08Cr\uff09 %<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,2,1,0\">19.0 &#8211; 23.0<\/span><\/td>\n<td><span data-path-to-node=\"10,2,2,0\">19.5 &#8211; 23.5<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,3,0,0\"><b data-path-to-node=\"10,3,0,0\" data-index-in-node=\"0\">\u9244 (Fe) %<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,3,1,0\">39.5\u5206<\/span><\/td>\n<td><span data-path-to-node=\"10,3,2,0\">22.0\u5206<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,4,0,0\"><b data-path-to-node=\"10,4,0,0\" data-index-in-node=\"0\">\u30e2\u30ea\u30d6\u30c7\u30f3\uff08Mo\uff09 %<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,4,1,0\">&#8211;<\/span><\/td>\n<td><span data-path-to-node=\"10,4,2,0\">2.5 &#8211; 3.5<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,5,0,0\"><b data-path-to-node=\"10,5,0,0\" data-index-in-node=\"0\">\u9285\uff08Cu\uff09 %<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,5,1,0\">&#8211;<\/span><\/td>\n<td><span data-path-to-node=\"10,5,2,0\">1.5 &#8211; 3.0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,6,0,0\"><b data-path-to-node=\"10,6,0,0\" data-index-in-node=\"0\">\u5f15\u5f35\u5f37\u3055 (MPa)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,6,1,0\"><span class=\"math-inline\" data-math=\"\\ge 450\" data-index-in-node=\"0\">450$<\/span><\/span><\/td>\n<td><span data-path-to-node=\"10,6,2,0\"><span class=\"math-inline\" data-math=\"\\ge 585\" data-index-in-node=\"0\">$ge 585$<\/span><\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"10,7,0,0\"><b data-path-to-node=\"10,7,0,0\" data-index-in-node=\"0\">\u964d\u4f0f\u5f37\u3055 (MPa)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"10,7,1,0\"><span class=\"math-inline\" data-math=\"\\ge 170\" data-index-in-node=\"0\">170$<\/span><\/span><\/td>\n<td><span data-path-to-node=\"10,7,2,0\"><span class=\"math-inline\" data-math=\"\\ge 240\" data-index-in-node=\"0\">240$<\/span><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 data-path-to-node=\"11\">\u71b1\u81a8\u5f35\u3068\u786b\u5316\u306e\u7ba1\u7406<\/h3>\n<p data-path-to-node=\"12\">\u71b1\u4ea4\u63db\u5668\u306e\u8a2d\u8a08\u3067\u3088\u304f\u898b\u843d\u3068\u3055\u308c\u308b\u306e\u304c\u71b1\u81a8\u5f35\u4fc2\u6570(CTE)\u3067\u3059\u3002\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1\u306f\u30cf\u30b9\u30c6\u30ed\u30a4\u306b\u6bd4\u3079\u9244\u306e\u542b\u6709\u91cf\u304c\u9ad8\u3044\u305f\u3081\u3001\u305d\u306eCTE\u306f\u70ad\u7d20\u92fc\u30b7\u30a7\u30eb\u3068\u306e\u9069\u5408\u6027\u304c\u9ad8\u304f\u3001\u71b1\u30b5\u30a4\u30af\u30eb\u4e2d\u306e\u30c1\u30e5\u30fc\u30d6-\u30b7\u30fc\u30c8\u63a5\u5408\u90e8\u306e\u7834\u640d\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002.<\/p>\n<p data-path-to-node=\"13\">Furthermore, in environments containing sulfur (common in refinery &#8220;bottom-of-the-barrel&#8221; processing), the chromium content in these alloys facilitates the formation of a protective Cr-oxide scale. However, if the atmosphere shifts from oxidizing to reducing, the stability of this scale is compromised. In such cases, 800H remains superior for gas-to-gas exchangers, while 825 excels in liquid-to-liquid exchangers where acid dew point corrosion is a concern.<\/p>\n<p data-path-to-node=\"13\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-2713\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg\" alt=\"\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1\u3092\u9ad8\u5869\u5316\u7269\u71b1\u4ea4\u63db\u5668\u306b\u4f7f\u7528\u3059\u308b\u7406\u7531\" width=\"1024\" height=\"765\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-300x224.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-768x574.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-16x12.jpg 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3 data-path-to-node=\"14\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u8a55\u6c7a<\/h3>\n<p data-path-to-node=\"15\">\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3092\u6c7a\u5b9a\u3057\u305f\u3002 <b data-path-to-node=\"15\" data-index-in-node=\"27\">\u71b1\u4ea4\u63db\u5668\u7528\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1<\/b> \u634f\u9020\u306f\u6c7a\u3057\u3066\u30b3\u30b9\u30c8\u3060\u3051\u306b\u57fa\u3065\u3044\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u305d\u308c\u306f <span class=\"math-inline\" data-math=\"Pitting Resistance Equivalent Number (PREN)\" data-index-in-node=\"139\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">P<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mord mathnormal\">tt<\/span><span class=\"mord mathnormal\">\u3067<\/span><span class=\"mord mathnormal\">g<\/span><span class=\"mord mathnormal\">R<\/span><span class=\"mord mathnormal\">\u30a8\u30b9<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mord mathnormal\">s<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mord mathnormal\">\u30a2\u30f3<\/span><span class=\"mord mathnormal\">\u30bb<\/span><span class=\"mord mathnormal\">\u65b9\u7a0b\u5f0f<\/span><span class=\"mord mathnormal\">u<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mord mathnormal\">v<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\">l<\/span><span class=\"mord mathnormal\">e<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mord mathnormal\">tN<\/span><span class=\"mord mathnormal\">u<\/span><span class=\"mord mathnormal\">\u30a8\u30e0\u30d3\u30fc<\/span><span class=\"mord mathnormal\">\u3044\u3044\u3048<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">PREN<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u304a\u3088\u3073\u5a92\u4f53\u56fa\u6709\u306e\u30af\u30ea\u30fc\u30d7-\u7834\u88c2\u66f2\u7dda\u3002\u9ad8\u5727\u84b8\u6c17\u767a\u751f\u5668\u306b\u306f\u3001800H\/HT\u578b\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u6d77\u6c34\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u307e\u305f\u306f\u30ea\u30f3\u9178\u30d2\u30fc\u30bf\u30fc\u306b\u306f\u3001Mo\u5b89\u5b9a\u5316825\u304c\u58ca\u6ec5\u7684SCC\u306b\u5bfe\u3059\u308b\u5fc5\u8981\u306a\u4fdd\u967a\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n<hr data-path-to-node=\"16\" \/>\n<h3 data-path-to-node=\"17\">\u95a2\u9023Q&amp;A<\/h3>\n<p data-path-to-node=\"18\"><b data-path-to-node=\"18\" data-index-in-node=\"0\">1.\u30a4\u30f3\u30b3\u30ed\u30a4800H\u304c\u597d\u307e\u308c\u308b\u7406\u7531 <a href=\"https:\/\/www.nickelcasting.com\/ko\/%eb%8b%88%ec%bc%88-%ed%95%a9%ea%b8%88\/%ec%9d%b8%ec%bd%94%eb%a1%9c%ec%9d%b4-%ea%b8%88%ec%86%8d-%ed%95%a9%ea%b8%88\/incoloy-800\/\">\u30a4\u30f3\u30b3\u30ed\u30a4800<\/a> \u9ad8\u6e29\u4ea4\u63db\u6a5f\u7528\uff1f<\/b><\/p>\n<p data-path-to-node=\"18\">The &#8220;H&#8221; designation signifies a controlled carbon range (<span class=\"math-inline\" data-math=\"0.05\\%\u20130.10\\%\" data-index-in-node=\"133\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.05%-0.10%<\/span><\/span><\/span><\/span><\/span>)\u3068\u7279\u6b8a\u306a\u56fa\u6eb6\u5316\u71b1\u51e6\u7406\u3092\u65bd\u3057\u305f\u3002\u3053\u306e\u7d50\u679c\u3001\u7d50\u6676\u7c92\u5f84\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u4ee5\u4e0b\u306e\u6e29\u5ea6\u3067\u30af\u30ea\u30fc\u30d7\u7834\u65ad\u5f37\u5ea6\u304c\u8457\u3057\u304f\u5411\u4e0a\u3059\u308b\u3002 <span class=\"math-inline\" data-math=\"1100^\\circ\\text{F}\" data-index-in-node=\"306\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">110<\/span><span class=\"mord\">0<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mbin mtight\">\u2218<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mord text\"><span class=\"mord\">F<\/span><\/span><\/span><\/span><\/span><\/span> (<span class=\"math-inline\" data-math=\"593^\\circ\\text{C}\" data-index-in-node=\"326\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">59<\/span><span class=\"mord\">3<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mbin mtight\">\u2218<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mord text\"><span class=\"mord\">C<\/span><\/span><\/span><\/span><\/span><\/span>)\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001\u6a19\u6e96\u5408\u91d1800\u306f\u7c92\u6210\u9577\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002.<\/p>\n<p data-path-to-node=\"19\"><b data-path-to-node=\"19\" data-index-in-node=\"0\">2.\u30a4\u30f3\u30b3\u30ed\u30a4825\u306f\u3001\u6d77\u6c34\u304c\u6ede\u7559\u3059\u308b\u3088\u3046\u306a\u7528\u9014\u3067\u3082\u8010\u5b54\u98df\u6027\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/b><\/p>\n<p data-path-to-node=\"19\">\u30a4\u30f3\u30b3\u30ed\u30a4825\u306f\u30cb\u30c3\u30b1\u30eb\u542b\u6709\u91cf\u304c\u9ad8\u3044\u305f\u3081SCC\u306b\u5bfe\u3059\u308b\u8010\u6027\u306f\u512a\u308c\u3066\u3044\u307e\u3059\u304c\u3001Mo\u542b\u6709\u91cf(<span class=\"math-inline\" data-math=\"2.5\\%\u20133.5\\%\" data-index-in-node=\"167\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2.5%-3.5%<\/span><\/span><\/span><\/span><\/span>)\u306f\u3001\u9699\u9593\u8150\u98df\u304c\u767a\u751f\u3057\u3046\u308b\u6ede\u7559\u6d77\u6c34\u306b\u306f\u4e0d\u5341\u5206\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u3053\u306e\u3088\u3046\u306a\u7279\u6b8a\u306a\u71b1\u4ea4\u63db\u5668\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u3088\u308a\u9ad8\u3044\u8010\u98df\u6027\u3092\u6301\u3064\u5408\u91d1\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002 <span class=\"math-inline\" data-math=\"PREN\" data-index-in-node=\"325\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">PREN<\/span><\/span><\/span><\/span><\/span>, \u306e\u3088\u3046\u306a\u3082\u306e\u3060\u3002 <a href=\"https:\/\/www.nickelcasting.com\/ko\/%eb%8b%88%ec%bc%88-%ed%95%a9%ea%b8%88\/%ec%9d%b8%ec%bd%94%eb%84%ac-%eb%8b%88%ec%bc%88-%ed%95%a9%ea%b8%88\/inconel-625\/\">\u30a4\u30f3\u30b3\u30cd\u30eb625<\/a>, \u6d41\u901f\u306b\u3088\u3063\u3066\u306f\u3001\"S \"\u304c\u63d0\u6848\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002.<\/p>\n<p data-path-to-node=\"20\"><b data-path-to-node=\"20\" data-index-in-node=\"0\">3.\u71b1\u4ea4\u63db\u5668\u30c1\u30e5\u30fc\u30d6\u7528\u30a4\u30f3\u30b3\u30ed\u30a4\u5408\u91d1\u306e\u6eb6\u63a5\u4e0a\u306e\u6ce8\u610f\u70b9\u306f\uff1f<\/b><\/p>\n<p data-path-to-node=\"20\">ERNiCr-3\uff08825\u7528\uff09\u307e\u305f\u306fERNiCr-3\uff08800H\u7528\uff09 \u306e\u3088\u3046\u306a\u3001\u9069\u5408\u3059\u308b\u7d44\u6210\u306e\u91d1\u5c5e\u30d5\u30a3\u30e9\u30fc\u304c\u4e00\u822c\u7684 \u306b\u4f7f\u7528\u3055\u308c\u308b\u3002\u51dd\u56fa\u5272\u308c\u3092\u9632\u6b62\u3057\u3001\u71b1\u5f71\u97ff\u90e8(HAZ)\u306e\u8010\u98df\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u3001\u4f4e\u5165\u71b1\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>Selecting the optimal Incoloy alloy for heat exchanger units requires a nuanced understanding of the intersection between mechanical stress and chemical aggression. In high-temperature environments or systems exposed to localized pitting, standard stainless steels often fail due to chloride-induced stress corrosion cracking (SCC). As engineers, we look toward the Incoloy series\u2014specifically the 800 and 825 families\u2014to provide the necessary oxidation resistance and metallurgical stability that 300-series steels lack. The secret lies in the controlled balance of nickel, chromium, and iron, often augmented with titanium for stabilization. The Metallurgical Edge: 800H vs. 825 in Thermal Media When we evaluate an Incoloy alloy for heat exchanger applications, we are essentially choosing between [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2713,"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 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":[3],"tags":[],"class_list":["post-2711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"spectra_custom_meta":{"_edit_lock":["1772438014:1"],"_edit_last":["1"],"rank_math_seo_score":["73"],"rank_math_description":["Fretting over SCC in chloride-heavy thermal systems? Selecting the right Incoloy alloy for heat exchanger is vital. See which grade holds."],"rank_math_focus_keyword":["incoloy alloy for heat exchanger"],"_thumbnail_id":["2713"],"_wp_page_template":["default"],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:32:\"incoloy alloy for heat exchanger\";}"],"rank_math_internal_links_processed":["1"],"site-sidebar-layout":["default"],"ast-site-content-layout":["default"],"site-content-style":["default"],"site-sidebar-style":["default"],"theme-transparent-header-meta":["default"],"astra-migrate-meta-layouts":["set"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !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:\"1776935854\";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-2711.css"]},"uagb_featured_image_src":{"full":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg",1024,765,false],"thumbnail":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-150x150.jpg",150,150,true],"medium":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-300x224.jpg",300,224,true],"medium_large":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-768x574.jpg",768,574,true],"large":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg",1024,765,false],"1536x1536":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg",1024,765,false],"2048x2048":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140.jpg",1024,765,false],"trp-custom-language-flag":["https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/03\/140-16x12.jpg",16,12,true]},"uagb_author_info":{"display_name":"nickel","author_link":"https:\/\/www.nickelcasting.com\/ja\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"Selecting the optimal Incoloy alloy for heat exchanger units requires a nuanced understanding of the intersection between mechanical stress and chemical aggression. In high-temperature environments or systems exposed to localized pitting, standard stainless steels often fail due to chloride-induced stress corrosion cracking (SCC). As engineers, we look toward the Incoloy series\u2014specifically the 800 and 825&hellip;","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2711","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=2711"}],"version-history":[{"count":1,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2711\/revisions"}],"predecessor-version":[{"id":2714,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2711\/revisions\/2714"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media\/2713"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media?parent=2711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/categories?post=2711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/tags?post=2711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}