{"id":2426,"date":"2026-01-17T08:42:10","date_gmt":"2026-01-17T07:42:10","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=2426"},"modified":"2026-01-30T03:02:13","modified_gmt":"2026-01-30T02:02:13","slug":"hastelloy-c276-vs-hastelloy-c22","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ja\/hastelloy-c276-vs-hastelloy-c22\/","title":{"rendered":"\u30cf\u30b9\u30c6\u30ed\u30a4 C276 vs \u30cf\u30b9\u30c6\u30ed\u30a4 C22"},"content":{"rendered":"<p data-path-to-node=\"8\">\u9ad8\u6027\u80fd\u30cb\u30c3\u30b1\u30eb\u30fb\u30af\u30ed\u30e0\u30fb\u30e2\u30ea\u30d6\u30c7\u30f3\u5408\u91d1\u306e\u4e16\u754c\u3067\u306f\u30012\u3064\u306e\u540d\u524d\u304c\u8a71\u984c\u3092\u72ec\u5360\u3057\u3066\u3044\u308b\uff1a\u30cf\u30b9\u30c6\u30ed\u30a4C276\u3068 <a href=\"https:\/\/www.nickelcasting.com\/pt\/ligas-de-niquel\/hastelloy-nickel-alloys\/hastelloy-c-22\/\">\u30cf\u30b9\u30c6\u30ed\u30a4 C22<\/a>. For engineers and procurement specialists in the chemical processing industry, distinguishing between these two &#8220;C-type&#8221; alloys is critical. While they share a lineage, their distinct chemical compositions dictate how they behave under severe corrosive stress.<\/p>\n<p data-path-to-node=\"9\">\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u6280\u8853\u7684\u306a\u30cb\u30e5\u30a2\u30f3\u30b9\u3092\u5206\u89e3\u3057\u3001\u9577\u5bff\u547d\u3068\u5b89\u5168\u6027\u306e\u305f\u3081\u306b\u7d20\u6750\u9078\u3073\u3092\u6700\u9069\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002.<\/p>\n<p data-path-to-node=\"9\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-2427\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61.jpg\" alt=\"\" width=\"1200\" height=\"655\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61.jpg 1200w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61-300x164.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61-1024x559.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61-768x419.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/61-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h2 data-path-to-node=\"10\">C276\u3068C22\u306e\u9055\u3044<\/h2>\n<p data-path-to-node=\"11\">The fundamental C276 vs C22 differences lie in their elemental &#8220;recipes.&#8221; While both are Ni-Cr-Mo superalloys designed to resist aggressive corrosion, the balance of Chromium (Cr) and Molybdenum (Mo) sets them apart.<\/p>\n<p data-path-to-node=\"12\">Hastelloy C276 (UNS N10276) is considered the &#8220;workhorse&#8221; of the industry. It relies on a high Molybdenum content (15-17%) and Tungsten (3-4.5%) to provide exceptional resistance to reducing environments (like hydrochloric acid). However, its Chromium content is lower (approx. 14.5-16.5%).<\/p>\n<p data-path-to-node=\"13\">\u30cf\u30b9\u30c6\u30ed\u30a4C22(UNS N06022)\u306f\u3001\u3057\u3070\u3057\u3070\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3068\u898b\u306a\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u3053\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8abf\u6574\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u3002\u30af\u30ed\u30e0\u3092\u7d0420-22.5%\u306b\u5897\u52a0\u3055\u305b\u308b\u4e00\u65b9\u3001\u30e2\u30ea\u30d6\u30c7\u30f3\u3092\u308f\u305a\u304b\u306b\u6e1b\u5c11\u3055\u305b\u308b\uff0812.5-14.5%\uff09\u3002.<\/p>\n<p data-path-to-node=\"14\">\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b\uff1f<\/p>\n<ul data-path-to-node=\"15\">\n<li>\n<p data-path-to-node=\"15,0,0\">\u8010\u9178\u5316\u6027\uff1aC22\u306f\u30af\u30ed\u30e0\u304c\u9ad8\u3044\u305f\u3081\u3001C276\u306b\u6bd4\u3079\u3066\u9178\u5316\u5a92\u4f53\uff08\u6e7f\u5869\u7d20\u3001\u785d\u9178\u6df7\u5408\u7269\u3001\u7b2c\u4e8c\u9244\u5869\u306a\u3069\uff09\u306b\u5bfe\u3059\u308b\u8010\u6027\u304c\u975e\u5e38\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"15,1,0\">\u6eb6\u63a5\u6027\uff1a\u4e21\u8005\u3068\u3082\u512a\u308c\u305f\u6eb6\u63a5\u6027\u3092\u6301\u3064\u304c\u3001C22\u306e\u65b9\u304c\u6eb6\u63a5\u71b1\u5f71\u97ff\u90e8\uff08HAZ\uff09\u306b\u304a\u3051\u308b\u7c92\u754c\u6790\u51fa\u306b\u5bfe\u3059\u308b\u8010\u6027\u306b\u512a\u308c\u3001\u591a\u5de5\u7a0b\u30d7\u30e9\u30f3\u30c8\u306e\u6eb6\u63a5\u307e\u307e\u306e\u72b6\u614b\u3067\u306f\u3084\u3084\u5805\u7262\u3067\u3042\u308b\u3002.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"16\">\u3053\u308c\u3092\u5b9a\u91cf\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u8010\u5b54\u98df\u6027\u7b49\u4fa1\u6570\uff08PREN\uff09\u3092\u8abf\u3079\u307e\u3059\u3002.<\/p>\n<div data-path-to-node=\"17\">\n<div data-math=\"PREN = \\%Cr + 3.3(\\%Mo + 0.5\\%W) + 16\\%N\"><span aria-hidden=\"true\">PREN=%Cr+3.3(%Mo+0.5%W)+16%N<\/span><\/div>\n<\/div>\n<p data-path-to-node=\"18\">\u4e00\u822c\u306b\u3001C22\u306f\u3088\u308a\u9ad8\u3044PREN\u3092\u793a\u3057\u3001\u6ede\u7559\u3057\u305f\u9ad8\u5869\u5316\u7269\u74b0\u5883\u306b\u304a\u3051\u308b\u5c40\u6240\u7684\u306a\u5b54\u98df\u3084\u9699\u9593\u8150\u98df\u306b\u5bfe\u3057\u3066\u3088\u308a\u512a\u308c\u305f\u8010\u6027\u3092\u793a\u3059\u3002.<\/p>\n<h2 data-path-to-node=\"19\">C276 \u5bfe C22 \u5316\u5b66\u51e6\u7406\u7528\u9014<\/h2>\n<p data-path-to-node=\"20\">C276\u3068C22\u306e\u5316\u5b66\u51e6\u7406\u7528\u9014\u3092\u6bd4\u8f03\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u6c7a\u5b9a\u306f\u901a\u5e38\u3001\u7279\u5b9a\u306e\u9178\u306e\u6d41\u308c\u3068\u9178\u5316\u5264\u306e\u6709\u7121\u306b\u304b\u304b\u3063\u3066\u3044\u308b\u3002.<\/p>\n<p data-path-to-node=\"21\">\u30cf\u30b9\u30c6\u30ed\u30a4C276\u304c\u305d\u306e\u6a19\u6e96\u3067\u3042\u308b\uff1a<\/p>\n<ul data-path-to-node=\"22\">\n<li>\n<p data-path-to-node=\"22,0,0\">\u7d14\u7c8b\u306a\u9084\u5143\u6027\u9178\uff1a\u9178\u5316\u5264\u304c\u5b58\u5728\u3057\u306a\u3044\u5869\u9178\u3084\u786b\u9178\u306e\u74b0\u5883\u3067\u306f\u3001\u975e\u5e38\u306b\u512a\u308c\u305f\u6027\u80fd\u3092\u767a\u63ee\u3059\u308b\u3002.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,0\">\u30d1\u30eb\u30d7\u3068\u88fd\u7d19\uff1a\u6d88\u5316\u5668\u3084\u6f02\u767d\u30d7\u30e9\u30f3\u30c8\u3067\u306f\u3001C276\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3002.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,2,0\">\u30b5\u30ef\u30fc\u30ac\u30b9\u4e95\u6238\u3092\u8c4a\u5bcc\u306b\u542b\u3080\u5751\u5185\u74b0\u5883 <span aria-hidden=\"true\">H2S<\/span> (\u786b\u5316\u6c34\u7d20\uff09\u3068 <span aria-hidden=\"true\">CO2<\/span>.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"23\">\u30cf\u30b9\u30c6\u30ed\u30a4C22\u306f\u6b21\u306e\u3088\u3046\u306a\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul data-path-to-node=\"24\">\n<li>\n<p data-path-to-node=\"24,0,0\">\u533b\u85ac\u54c1\u88fd\u9020\uff1aC22\u306f\u8150\u98df\u3057\u306b\u304f\u304f\u3001\u7e4a\u7d30\u306a\u30d0\u30c3\u30c1\u3092\u6c5a\u67d3\u3057\u306b\u304f\u3044\u305f\u3081\u3001API\uff08\u539f\u85ac\uff09\u53cd\u5fdc\u5bb9\u5668\u306e\u6a19\u6e96\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"24,1,0\">Agrochemicals &amp; Pesticides: Production lines that switch between oxidizing and reducing steps (&#8220;swing&#8221; processes) require the versatility of C22.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"24,2,0\">\u30b9\u30af\u30e9\u30d0\u30fc\u3068\u8131\u786b\uff1a\u6392\u7159\u8131\u786b\uff08FGD\uff09\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30b9\u30af\u30e9\u30d0\u30fc\u6db2\u304c\u30d5\u30e9\u30a4\u30a2\u30c3\u30b7\u30e5\u306b\u3088\u3063\u3066\u5f37\u9178\u6027\u306b\u306a\u308a\u3001\u9178\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001C22\u306fC276\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"25\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-2428\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62.jpg\" alt=\"\" width=\"1200\" height=\"655\" srcset=\"https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62.jpg 1200w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62-300x164.jpg 300w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62-1024x559.jpg 1024w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62-768x419.jpg 768w, https:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/62-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/h2>\n<h2 data-path-to-node=\"25\">C276\u3068C22\u306e\u6bd4\u8f03<\/h2>\n<p data-path-to-node=\"26\">Determining C276 vs C22 how to choose requires a specific analysis of your process media. It is not always about buying the &#8220;better&#8221; alloy, but the &#8220;right&#8221; one.<\/p>\n<ol start=\"1\" data-path-to-node=\"27\">\n<li>\n<p data-path-to-node=\"27,0,0\">\u9178\u5316\u5264\u3092\u5206\u6790\u3059\u308b\uff1a\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u7b2c\u4e8c\u9244\u30a4\u30aa\u30f3(<span aria-hidden=\"true\">Fe3+<\/span>)\u3001\u9285\u30a4\u30aa\u30f3(<span aria-hidden=\"true\">Cu2+<\/span>)\u3001\u904a\u96e2\u5869\u7d20\u3001\u307e\u305f\u306f\u785d\u9178\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001C22\u3092\u9078\u629e\u3059\u308b\u3002C276\u306f\u30af\u30ed\u30e0\u542b\u6709\u91cf\u304c\u4f4e\u3044\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u6761\u4ef6\u4e0b\u3067\u306f\u65e9\u671f\u6545\u969c\u3092\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"27,1,0\">Evaluate &#8220;Upset&#8221; Conditions: If your plant runs a consistent reducing acid stream, C276 is sufficient and cost-effective. However, if your process is prone to &#8220;upsets&#8221; (accidental air ingress or temperature spikes creating oxidizing conditions), C22 acts as an insurance policy.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"27,2,0\">\u30b3\u30b9\u30c8\u3068\u5165\u624b\u6027\uff1a\u6b74\u53f2\u7684\u306b\u306f\u3001C276\u306e\u65b9\u304c\u304b\u306a\u308a\u5b89\u304b\u3063\u305f\u3002\u4eca\u65e5\u3001\u4fa1\u683c\u5dee\u306f\u7e2e\u307e\u3063\u305f\u304c\u3001C276\u306e\u65b9\u304c\u5e83\u304f\u5728\u5eab\uff08\u677f\u3001\u68d2\u3001, <a href=\"https:\/\/www.nickelcasting.com\/pt\/product-forms\/flanges\/\">\u30d5\u30e9\u30f3\u30b8<\/a>).\u6a19\u6e96\u7684\u306a\u30ea\u30c7\u30e5\u30fc\u30b7\u30f3\u30b0\u30fb\u30e9\u30a4\u30f3\u306e\u8fc5\u901f\u306a\u4fee\u7406\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001C276\u304c\u7269\u6d41\u9762\u3067\u52dd\u308b\u3053\u3068\u304c\u591a\u3044\u3002.<\/p>\n<\/li>\n<\/ol>\n<hr data-path-to-node=\"28\" \/>\n<h3 data-path-to-node=\"29\">\u95a2\u9023Q&amp;A<\/h3>\n<p data-path-to-node=\"30\">Q1: \u30cf\u30b9\u30c6\u30ed\u30a4C22\u3068C276\u306e\u6eb6\u63a5\u306f\u53ef\u80fd\u3067\u3059\u304b\uff1f<\/p>\n<p data-path-to-node=\"30\">A: \u306f\u3044\u3001\u7570\u6750\u6eb6\u63a5\u306f\u4e00\u822c\u7684\u3067\u3059\u3002\u4e00\u822c\u306b\u3001\u5408\u91d1\u542b\u6709\u91cf\u306e\u9ad8\u3044\u65b9\u306e\u6eb6\u63a5\u6eb6\u52a0\u6750\u3092\u4f7f\u7528\u3059\u3079\u304d\u3067\u3059\uff08\u30aa\u30fc\u30d0\u30fc\u30fb\u30de\u30c3\u30c1\u30f3\u30b0\uff09\u3002\u3053\u306e\u5834\u5408\u3001C22 \u6eb6\u52a0\u6750 (ERNiCrMo-10) \u3092\u4f7f\u7528\u3057\u3066\u3001\u6eb6\u63a5\u30d3\u30fc\u30c9\u304c C276 \u6bcd\u6750\u3068\u540c\u7b49\u4ee5\u4e0a\u306e\u8010\u98df\u6027\u3092\u6301\u3064\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n<p data-path-to-node=\"31\">Q2: \u30cf\u30b9\u30c6\u30ed\u30a4C22\u306fC276\u3088\u308a\u512a\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n<p data-path-to-node=\"31\">A: No. In purely reducing hydrochloric acid environments at specific concentrations and temperatures, the higher Molybdenum content in C276 can actually offer slightly better corrosion rates than C22. C22 is &#8220;better&#8221; specifically for mixed or oxidizing streams.<\/p>\n<p data-path-to-node=\"32\">Q3\uff1a\u898b\u305f\u76ee\u3067\u533a\u5225\u3059\u308b\u306b\u306f\uff1f<\/p>\n<p data-path-to-node=\"32\">A: \u8089\u773c\u3067\u306f\u533a\u5225\u3067\u304d\u307e\u305b\u3093\u3002\u3069\u3061\u3089\u3082\u660e\u308b\u3044\u9280\u7070\u8272\u306e\u91d1\u5c5e\u3067\u3059\u3002\u30af\u30ed\u30e0\u3068\u30e2\u30ea\u30d6\u30c7\u30f3\u306e\u6bd4\u7387\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001PMI\uff08Positive Material Identification\uff09\u88c5\u7f6e\uff08\u86cd\u5149X\u7dda\u30cf\u30f3\u30c7\u30a3\u5206\u6790\u88c5\u7f6e\uff09\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u30d2\u30fc\u30c8\u30fb\u30ca\u30f3\u30d0\u30fc\u3068\u30df\u30eb\u30fb\u30c6\u30b9\u30c8\u30fb\u30ec\u30dd\u30fc\u30c8\uff08MTR\uff09\u3092\u63a2\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the world of high-performance nickel-chromium-molybdenum alloys, two names dominate the conversation: Hastelloy C276 and Hastelloy C22. For engineers and procurement specialists in the chemical processing industry, distinguishing between these two &#8220;C-type&#8221; alloys is critical. While they share a lineage, their distinct chemical compositions dictate how they behave under severe corrosive stress. This guide breaks down the technical nuances, helping you optimize material selection for longevity and safety. C276 vs C22 differences The fundamental C276 vs C22 differences lie in their elemental &#8220;recipes.&#8221; While both are Ni-Cr-Mo superalloys designed to resist aggressive corrosion, the balance of Chromium (Cr) and Molybdenum (Mo) sets them apart. Hastelloy C276 (UNS N10276) is considered 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