{"id":2761,"date":"2026-03-06T03:31:08","date_gmt":"2026-03-06T02:31:08","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?p=2761"},"modified":"2026-03-06T03:31:15","modified_gmt":"2026-03-06T02:31:15","slug":"nickel-alloy-vs-duplex-stainless-steel","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ja\/nickel-alloy-vs-duplex-stainless-steel\/","title":{"rendered":"\u5869\u5316\u7269\u4e2d\u306e\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03"},"content":{"rendered":"

\u8150\u98df\u6027\u306e\u5f37\u3044\u74b0\u5883\u3067\u306e\u6750\u6599\u9078\u629e\u306f\u3001\u4e00\u7b4b\u7e04\u3067\u306f\u3044\u304d\u307e\u305b\u3093\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u3001\u79c1\u305f\u3061\u306f\u5e38\u306b\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u4fe1\u983c\u6027\u3068\u5148\u884c\u8cc7\u672c\u652f\u51fa\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u3063\u3066\u3044\u307e\u3059\u3002\u30aa\u30d5\u30b7\u30e7\u30a2\u3001\u6d77\u6c34\u6de1\u6c34\u5316\u3001\u5316\u5b66\u51e6\u7406\u5206\u91ce\u307b\u3069\u3001\u3053\u306e\u51b6\u91d1\u7684\u7dca\u5f35\u304c\u9855\u8457\u306a\u5206\u91ce\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u9ad8\u6e29\u306e\u5869\u5316\u7269\u3084\u30b5\u30ef\u30fc\u30ac\u30b9\u306b\u3055\u3089\u3055\u308c\u308b\u91cd\u8981\u306a\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u3092\u8a2d\u8a08\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u8b70\u8ad6\u306f\u3057\u3070\u3057\u3070\u4e00\u3064\u306e\u672c\u8cea\u7684\u306a\u6bd4\u8f03\u306b\u5e30\u7740\u3057\u307e\u3059\uff1a \u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u5bfe\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc<\/b>. .\u3053\u3053\u3067\u306e\u5224\u65ad\u3092\u8aa4\u308b\u3068\u3001\u3061\u3087\u3063\u3068\u3057\u305f\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u982d\u75db\u306e\u7a2e\u306b\u306a\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5fc5\u7136\u7684\u306b\u81f4\u547d\u7684\u306a\u5869\u5316\u7269\u5fdc\u529b\u8150\u98df\u5272\u308c\uff08CSCC\uff09\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u5927\u898f\u6a21\u306a\u64cd\u696d\u505c\u6b62\u306b\u3064\u306a\u304c\u308b\u3002.<\/p>\n

\u3053\u308c\u30892\u3064\u306e\u51b6\u91d1\u7684\u91cd\u93ae\u306e\u3069\u3061\u3089\u3092\u9078\u629e\u3059\u308b\u304b\u306b\u3064 \u3044\u3066\u306f\u3001\u71b1\u5fdc\u529b\u304a\u3088\u3073\u5316\u5b66\u5fdc\u529b\u4e0b\u3067\u306e\u5fae\u7d30\u69cb\u9020\u6319 \u52d5\u3092\u6df1\u304f\u6398\u308a\u4e0b\u3052\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u3069\u3061\u3089\u3082316L\u306e\u3088\u3046\u306a\u6a19\u6e96\u7684\u306a300\u30b7\u30ea\u30fc\u30ba\u30fb\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u92fc\u3088\u308a\u3082\u5927\u304d\u306a\u6027\u80fd\u5411\u4e0a\u3092\u63d0\u4f9b\u3059\u308b\u4e00\u65b9\u3067\u3001\u305d\u306e\u6027\u80fd\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7\u306f\u9ad8\u6e29\u3068\u7279\u5b9a\u306e\u30cf\u30ed\u30b2\u30f3\u5316\u7269\u6fc3\u5ea6\u3067\u6025\u6fc0\u306b\u4e56\u96e2\u3059\u308b\u3002.<\/p>\n

\"\u5869\u5316\u7269\u4e2d\u306e\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03\"<\/p>\n

\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u92fc\u3092\u9069\u5207\u306b\u8a55\u4fa1\u3059\u308b\u306b\u306f\u3001 \u307e\u305a\u4e21\u8005\u306e\u5316\u5b66\u7d44\u6210\u3068\u3001\u305d\u306e\u7d50\u679c\u5f97\u3089\u308c\u308b\u8010\u5b54\u98df \u6027\u7b49\u4fa1\u6570(PREN)\u3092\u8abf\u3079\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u8a08\u7b97\u5f0f PREN<\/span>=<\/span><\/span>%<\/span>C<\/span>r<\/span>+<\/span><\/span>3.3<\/span>(<\/span>%<\/span>M<\/span>o<\/span>)<\/span>+<\/span><\/span>16<\/span>(<\/span>%<\/span>N<\/span>)<\/span><\/span><\/span><\/span><\/span>, \u3053\u306e\u6307\u6a19\u306f\u3001\u5c40\u90e8\u7684\u306a\u8010\u98df\u6027\u306e\u57fa \u6e96\u3068\u306a\u308b\u3002\u4e8c\u76f8\u92fc\u304a\u3088\u3073\u8d85\u4e8c\u76f8\u92fc (2205\u304a\u3088\u30732507\u306a\u3069)\u306f\u3001\u30aa\u30fc\u30b9\u30c6\u30ca \u30a4\u30c8\u76f8\u3068\u30d5\u30a7\u30e9\u30a4\u30c8\u76f8\u309250\/50\u306e\u5272\u5408\u3067\u6b63\u78ba\u306b\u30d0\u30e9\u30f3 \u30b9\u3088\u304f\u6df7\u5408\u3057\u3066\u3044\u308b\u3002\u4e8c\u76f8\u92fc\u306f\u3001\u30af\u30ed\u30e0\u3068\u7a92\u7d20\u306e\u542b\u6709\u91cf\u304c\u9ad8\u3044 \u305f\u3081\u3001\u9ad8\u5408\u91d1\u92fc\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u4f4e\u3044\u57fa\u672c\u30b3\u30b9\u30c8\u3067\u3001 \u5c40\u6240\u8150\u98df\u5b54\u98df\u306b\u5bfe\u3059\u308b\u5353\u8d8a\u3057\u305f\u8010\u6027\u3092\u6301\u3064\u3002.<\/p>\n

Conversely, nickel-based alloys (such as Alloy 825, 625, or C-276) rely on a massive nickel matrix\u2014often exceeding 50% of the total mass. This fundamental elemental difference dictates their primary corrosion mechanisms. While evaluating nickel alloy vs duplex stainless steel, it becomes immediately apparent that the high nickel content provides near-immunity to CSCC in high-temperature environments, whereas the ferrite phase in duplex acts as its structural Achilles’ heel under similar stress.<\/p>\n\n\n\n\n\n\n\n\n
\u7d20\u6750\u30b0\u30ec\u30fc\u30c9<\/strong><\/td>\n\u51b6\u91d1\u30bf\u30a4\u30d7<\/strong><\/td>\n\u516c\u79f0Cr (%)<\/strong><\/td>\n\u516c\u79f0Ni (%)<\/strong><\/td>\n\u516c\u79f0Mo (%)<\/strong><\/td>\n\u4ee3\u8868\u7684\u306aPREN<\/strong><\/td>\n\u6700\u9ad8\u4f7f\u7528\u6e29\u5ea6 (\u00b0C)<\/strong><\/td>\n<\/tr>\n<\/thead>\n
\u5408\u91d12205<\/b><\/span><\/td>\n\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9<\/span><\/td>\n22.0<\/span><\/td>\n5.5<\/span><\/td>\n3.0<\/span><\/td>\n35<\/span><\/td>\n250\u00b0C<\/span><\/td>\n<\/tr>\n
\u30a2\u30ed\u30a42507<\/b><\/span><\/td>\n\u30b9\u30fc\u30d1\u30fc\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9<\/span><\/td>\n25.0<\/span><\/td>\n7.0<\/span><\/td>\n4.0<\/span><\/td>\n42.5<\/span><\/td>\n250\u00b0C<\/span><\/td>\n<\/tr>\n
\u30a2\u30ed\u30a4825<\/b><\/span><\/td>\n\u30cb\u30c3\u30b1\u30eb-\u9244-\u30af\u30ed\u30e0<\/span><\/td>\n21.0<\/span><\/td>\n42.0<\/span><\/td>\n3.0<\/span><\/td>\n31<\/span><\/td>\n540\u00b0C<\/span><\/td>\n<\/tr>\n
\u30a2\u30ed\u30a4625<\/b><\/span><\/td>\n\u30cb\u30c3\u30b1\u30eb\u30fb\u30af\u30ed\u30e0<\/span><\/td>\n21.5<\/span><\/td>\n61.0<\/span><\/td>\n9.0<\/span><\/td>\n50<\/span><\/td>\n980\u00b0C<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u964d\u4f0f\u5f37\u5ea6\u306f\u3001\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u92fc\u3092\u6bd4\u8f03\u3059 \u308b\u969b\u306e\u3082\u3046\u4e00\u3064\u306e\u91cd\u8981\u306a\u30d9\u30af\u30c8\u30eb\u3067\u3042\u308b\u3002\u4e8c\u76f8\u92fc\u306f\u3001\u6a19\u6e96\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec \u30b9\u92fc\u306e\u7d042\u500d\u306e\u964d\u4f0f\u5f37\u5ea6\u3092\u6301\u3064\u3053\u3068\u3067\u6709\u540d\u3067\u3042 \u308a\u3001\u591a\u304f\u306e\u56fa\u6eb6\u5f37\u5316\u92fc\u7a2e\u306f\u3001\u4e8c\u76f8\u92fc\u306e\u964d\u4f0f\u5f37 \u5ea6\u3092\u4e0a\u56de\u308b\u3002 \u30cb\u30c3\u30b1\u30eb\u5408\u91d1<\/a>. .\u3053\u308c\u306b\u3088\u308a\u3001\u914d\u7ba1\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u5927\u5e45\u306b\u8584\u3044\u8089\u539a\u306e\u5bb9\u5668\u3084\u90e8\u54c1\u3092\u8a2d\u8a08\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u30aa\u30d5\u30b7\u30e7\u30a2\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u30c8\u30c3\u30d7\u30b5\u30a4\u30c9\u3067\u81a8\u5927\u306a\u91cd\u91cf\u3068\u6750\u6599\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u308b\u3002.<\/p>\n

However, duplex stainless steel has a hard, unforgiving thermal ceiling. Continuous exposure to temperatures above 250\u00b0C to 300\u00b0C induces “475\u00b0C embrittlement”\u2014the precipitation of deleterious alpha-prime and sigma phases. This radically reduces impact toughness and drastically compromises corrosion resistance. In high-temperature applications, the argument of nickel alloy vs duplex stainless steel tilts entirely toward the nickel spectrum. Solid solution nickel alloys maintain structural stability and phase integrity from cryogenic environments well into the 1000\u00b0C range without forming brittle intermetallic phases.<\/p>\n

\"\u5869\u5316\u7269\u4e2d\u306e\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6bd4\u8f03\"<\/p>\n

\u77f3\u6cb9\u30fb\u30ac\u30b9\u306e\u4e0a\u6d41\u90e8\u9580\u3067\u306f\u3001\u5869\u5316\u7269\u3068\u3068\u3082\u306b\u786b\u5316\u6c34\u7d20\uff08H2S\uff09\u304c\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u6750\u6599\u306e\u9078\u629e\u304c\u3055\u3089\u306b\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002NACE MR0175 \/ ISO 15156\u898f\u683c\u306f\u3001\u71b1\u529b\u5b66\u7684\u304a\u3088\u3073\u74b0 \u5883\u7684\u306a\u53b3\u3057\u3044\u5236\u9650\u3092\u4e21\u6750\u6599\u30af\u30e9\u30b9\u306b\u8ab2\u3057\u3066\u3044\u308b\u3002\u30b5\u30ef\u30fc\u30b5\u30fc\u30d3 \u30b9\u7528\u306e\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8\u92fc\u3092\u6bd4\u8f03\u3057\u305f\u5834 \u5408\u3001\u4e8c\u76f8\u92fc\u306f\u3001\u6e29\u5ea6\u9650\u754c\u3001H2S\u5206\u5727\u3001\u74b0\u5883pH\u306b \u3088\u3063\u3066\u5927\u304d\u304f\u5236\u9650\u3055\u308c\u308b\u3002\u30b9\u30fc\u30d1\u30fc\u4e8c\u76f8\u92fc2507\u306f\u3001\u8efd\u5ea6\u306e\u9178\u6d17\u6761\u4ef6\u306b\u306f\u8010 \u3048\u3089\u308c\u308b\u304c\u3001H2S\u5206\u5727\u304c\u4e0a\u6607\u3059\u308b\u3068\u3001\u786b\u5316\u7269\u5fdc\u529b\u5272\u308c (SSC)\u306e\u30ea\u30b9\u30af\u306f\u6307\u6570\u95a2\u6570\u7684\u306b\u5897\u5927\u3059\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u82db\u9177\u306a\u7528\u9014\u3067\u306f\u3001\u9ad8\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u304c\u3001\u5b89\u5168\u3067\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306b\u9069\u5408\u3057\u305f\u904b\u8ee2\u306e\u305f\u3081\u306e\u5fc5\u9808\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u3068\u306a\u308b\u3002.<\/p>\n

Ultimately, deciding between nickel alloy vs duplex stainless steel requires mapping exact operational parameters\u2014temperature gradients, chloride ppm, pH levels, and tensile stress loads\u2014against the rigorous metallurgical limits of each grade. There is no universal “better” material, only the mathematically and chemically correct choice for your specific environment. If your engineering team is grappling with complex corrosion parameters or requires highly specific material testing data to validate a critical design, expert metallurgical guidance is crucial. Reach out to the technical engineering team at 28Nickel to discuss your operational conditions and ensure your next piping or vessel design achieves maximum lifecycle integrity.<\/p>\n

\n

\u95a2\u9023Q&A<\/h3>\n

Q1: \u9ad8\u5869\u5316\u7269\u74b0\u5883\u306b\u304a\u3044\u3066\u3001\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u3068\u4e8c\u76f8 \u92fc\u306e\u9078\u629e\u306f\u6e29\u5ea6\u306b\u3069\u306e\u3088\u3046\u306b\u5f71\u97ff\u3055\u308c\u307e\u3059\u304b\uff1f<\/b><\/p>\n

\u6e29\u5ea6\u306f\u3001\u4e8c\u76f8\u92fc\u306e\u4e3b\u306a\u5236\u9650\u8981\u56e0\u3067\u3042\u308b\u3002250\u2103\u3092\u8d85\u3048\u308b\u3068\u3001\u4e8c\u76f8\u92fc\u306f\u7d44\u7e54\u52a3\u5316 (\u30b7\u30b0\u30de\u76f8\u6790\u51fa)\u3092\u8d77\u3053\u3057\u3001\u8106\u5316\u3068\u8010\u98df\u6027\u306e\u6025\u6fc0 \u306a\u4f4e\u4e0b\u306b\u3064\u306a\u304c\u308b\u3002\u9006\u306b\u3001\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u306f\u3001\u9762\u5fc3\u7acb\u65b9\u76f8\u306e\u5b89\u5b9a \u6027\u3068\u8010\u98df\u6027\u3092\u9ad8\u6e29\u3067\u3082\u7dad\u6301\u3059\u308b\u305f\u3081\u3001\u9ad8 \u6e29\u3001\u9ad8\u5869\u5316\u7269\u74b0\u5883\u3067\u306e\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u308b\u3002.<\/p>\n

Q2: \u30b9\u30fc\u30d1\u30fc\u4e8c\u76f8\u92fc\u306f\u3001\u30aa\u30d5\u30b7\u30e7\u30a2\u7528\u9014\u3067\u5408\u91d1 825\u306b\u5b8c\u5168\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304b\uff1f<\/b><\/p>\n

No. While Super Duplex 2507 has a higher PREN than Alloy 825 and offers superior yield strength (allowing for thinner pipe walls), it cannot replace Alloy 825 in environments exceeding 250\u00b0C or in severe sour gas environments with high H2S partial pressures. Alloy 825’s 42% nickel content provides far superior resistance to chloride stress corrosion cracking under elevated thermal conditions.<\/p>\n

Q3: \u306a\u305c\u4e8c\u76f8\u92fc\u306e\u964d\u4f0f\u5f37\u5ea6\u306f\u3001\u591a\u304f\u306e\u30cb\u30c3\u30b1\u30eb\u5408 \u91d1\u3088\u308a\u3082\u4e00\u822c\u7684\u306b\u9ad8\u3044\u306e\u3067\u3059\u304b\uff1f<\/b><\/p>\n

\u4e8c\u76f8\u92fc\u306e\u9ad8\u3044\u964d\u4f0f\u5f37\u5ea6\u306f\u3001\u305d\u306e\u4e8c\u76f8\u5fae\u7d30\u69cb \u9020\u306e\u76f4\u63a5\u7684\u306a\u7d50\u679c\u3067\u3042\u308b\u3002\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u76f8\u3068 \u30d5\u30a7\u30e9\u30a4\u30c8\u76f8\u304c\u307b\u307c\u7b49\u3057\u304f\u6df7\u5408\u3057\u305f\u5fae\u7d30\u7c92 \u69cb \u9020 \u306f \u3001\u6a5f \u68b0 \u7684 \u5fdc \u529b \u4e0b \u3067 \u8ee2 \u79fb \u3092 \u9632 \u3050 \u5185 \u90e8 \u30d0 \u30ea \u30a2 \u3092 \u5f62 \u6210 \u3059 \u308b \u3002\u56fa\u6eb6\u5f37\u5316\u578b\u30cb\u30c3\u30b1\u30eb\u5408\u91d1(Alloy 600\u3084825\u306a\u3069) \u306f\u3001\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u5358\u76f8\u7d44\u7e54\u3067\u3042\u308b\u305f\u3081\u3001\u672c\u8cea\u7684 \u306b\u5ef6\u6027\u304c\u9ad8\u3044\u304c\u3001\u4e8c\u76f8\u92fc\u306b\u6bd4\u3079\u57fa\u6e96\u964d\u4f0f\u5f37\u5ea6\u304c \u4f4e\u3044\u3002.<\/p>","protected":false},"excerpt":{"rendered":"

Material selection in aggressive corrosive environments is rarely straightforward. As engineers, we constantly balance lifecycle reliability against upfront capital expenditures. Nowhere is this metallurgical tension more evident than in the offshore, desalination, and chemical processing sectors. When designing critical piping systems exposed to hot chlorides or sour gas, the debate often comes down to one essential comparison: nickel alloy vs duplex stainless steel. Making the wrong call here does not just result in a minor maintenance headache; it inevitably leads to catastrophic chloride stress corrosion cracking (CSCC) and massive operational downtime. The choice between these two metallurgical heavyweights requires a deep dive into their microstructural behavior under thermal and chemical […]<\/p>","protected":false},"author":1,"featured_media":2763,"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-2761","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"spectra_custom_meta":{"_edit_lock":["1772764134:1"],"_edit_last":["1"],"rank_math_internal_links_processed":["1"],"rank_math_seo_score":["71"],"rank_math_focus_keyword":["nickel alloy vs duplex stainless steel"],"rank_math_description":["SCC failures costing you? 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As engineers, we constantly balance lifecycle reliability against upfront capital expenditures. Nowhere is this metallurgical tension more evident than in the offshore, desalination, and chemical processing sectors. When designing critical piping systems exposed to hot chlorides or sour gas, the debate often comes down to one…","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2761","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=2761"}],"version-history":[{"count":2,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2761\/revisions"}],"predecessor-version":[{"id":2765,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/2761\/revisions\/2765"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media\/2763"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media?parent=2761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/categories?post=2761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/tags?post=2761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}