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Monel400是一种用量最大、用途最广、综合性能的耐蚀合金。此合金在氢氟酸和氟气介质中具有优异的耐蚀性，对热浓碱液也有优良的耐蚀性。同时还耐中性溶液、水、海水、大气、有机化合物等的腐蚀。该合金的一个重要特征是一般不产生应力腐蚀裂纹，切削性能良好。

各国标准及通称：MONEL400，ASTM B127，ASME SB-127，AMS 4554，JIS NW4400

UNS N04400，EN
2.4360，NCu28-2.5-1.5

主要成分：65Ni-32Cu-1Fe-0.1C

金相结构：Monel400合金的组织为高强度的单相固溶体。

机械性能：抗拉强度：σb≥450Mpa，屈服强度：σb≥170Mpa，延伸率：δ≥30%

耐腐蚀性：

蒙乃尔的耐腐蚀性能一般情况下比镍铜更优越,它比纯镍更耐还原性介质的腐蚀，比纯铜耐氧化性介质的腐蚀，对硫酸、磷酸、碳的耐腐蚀性非常好。特别是耐氢氯酸的腐蚀，对热浓碱也有优良的耐腐蚀性。Monel400合金在氟气、盐酸、硫酸、氢氟酸以及它们的派生物中有极优秀的耐蚀性。同时在海水中比铜基合金更具耐蚀性。

Monel400属可变形加工的镍-铜系镍基合金，具有很好的耐海水腐蚀和抗化学腐蚀性能，耐氯化物应力腐蚀开裂性能强。该合金是为数不多的能使用在氟化物中的合金之一。在氢氟酸和氟气介质中具有很好的耐氧化物应力裂变腐蚀，如海水、盐水环境中。

在中等浓度的碱性和盐溶液中，Monel 400也有非常好的抗腐蚀性能。

在较冷的的碱性环境下，该合金被用在弱酸如硫磺、氟化氢环境中。

酸介质：Monel400在浓度小于85%的硫酸中都是耐蚀的。Monel400是可耐氢氟酸中为数极少的重要材料之一。

水腐蚀：Monel400合金在多数水腐蚀情况下，不仅耐蚀性，而且孔蚀、应力腐蚀等也很少发现，腐蚀速度小于0.025mm/a。

高温腐蚀：Monel400在空气中连续工作的最高温度一般在600℃左右，在高温蒸汽中，腐蚀速度小于0.026mm/a。氨：由于Monel400合金镍含量高，故可耐585℃以下无水氨和氨化条件下的腐蚀。

配套焊材：蒙乃尔Monel400焊条（ENiCu-7），Monel400焊丝（ERNiCu-7）

应用领域：船用换热器、海水淡化设备、盐生产设备、海洋与化学加工设备、螺旋桨轴及水泵、汽油及水箱等

化学分析相关标准： YS/T 325-2009 系列，共6个标准可供参考。

镍基合金

 Nominal Chemical CompositionAlloyAMSUNS/W.Nr.CrNiMoSiFeOtherDescription

RA330®	5592 5716	N08330 1.4886	19	35		1.25	43	0.05 C, 1.5 Mn	The workhorse of austenitic heat resistant alloys. Good strength, carburization and oxidation resistance up to 2100°F.
RA333®	5593 5717	N06333 2.4608	25	45	3.0	1.0	18	3.0 Co, 0.05 C, 3.0 W	A nickel base superalloy with excellent carburization, oxidation, and hot corrosion resistance. It has high creep rupture strength with exceptional ability to withstand repeated thermal shock.
RA 602 CA®	-	N06025 2.4633	25	63	-	-	9.5	0.18 C, 2.2 Al, 0.1 Y, 0.08 Zr	One of the most oxidation resistant high strength, heat resistant nickel alloys available. Useful through 2200°F.
inconel600	-	N06600 2.4816	15.5	76	-	0.2	8.0	0.2 Al, 0.2 Ti	A nickel-chromium alloy with good carburization and oxidation resistance through 2000°F.
601	5870 5715	N06601 2.4851	22.5	61.5	-	0.2	14	1.4 Al, 0.3 Mn, 0.05 C	A nickel base alloy with high chromium and an aluminum addition. Outstanding oxidation resistance to 2200°F, good strength and carburization resistance.
800H/HT	-	N08811 N08810 1.4959 1.4876	21	31	-	0.4	45	0.4 AI, 0.6 Ti	High strength austenitic heat resistant alloy for ASME code applications to 1650°F.
AL-6XN®	-	N08367	20.5	24	6.3	0.4	48	0.3 Mn, 0.22 N, 0.02 C	A high molybdenum superaustenitic with outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking. Suitable for use in pulp mill bleach plants, seawater heat exchangers and chemical process equipment.
Alloy 20	-	N08020 2.4660	20	33	2.2	0.4	40	3.3 Cu, 0.5 Cb, 0.4 Mn, 0.02 C	The alloy designated specifically to withstand sulfuric acid. Practical immunity to chloride stress corrosion cracking. Stabilized to prevent intergranular corrosion as welded. Resistant to polythionic acid SCC.
inconel625_N06625	5599 5666 5837	N06625 2.4856	21.5	61	9.0	0.1	5.0	3.6 Cb, 0.4 Al, 0.4 Ti	High creep-rupture strength, oxidation resistant to 1800°F (982°C). Excellent resistance to hot seawater, scrubber environments and reducing acids.
825	B 424, B 425, B 423, B 162	NO8825							incoloy825现货库存提供incoloy825板材，薄板，棒材，无缝管，焊管和焊材.
718	5596 5662 5663 5832	N07718 2.4668	19	52	3.0	-	19	0.5 Al, 0.9 Ti, 5.0 Cb, 0.002 B	Nickel alloy precipitation hardened by gamma prime and double prime. Readily fabricated, weldable even in the hardened condition. Used for gas turbine components to 1200°F, as well as for cryogenic equipment.
718 NACE	-	N07718 2.4668	19	52	3.0	0.1	19	5.0 Cb	Age hardened nickel alloy commonly used in oil and gas applications for its high strength and moderate corrosion resistance. Meets API 6A.
X	5536 5754 5798	N06002 2.4665	22	47	9.0	-	18	1.7 Co, 0.5 Al, 0.15 Ti, 0.6 W	Good strength, fabricability and excellent oxidation resistance through 2000°F. Widely used for aircraft, marine and industrial gas turbine combustors.
X-750	5542, 5598	NO7750	15.0	73.0	-	0.2	7.0	0.7 Al, 2.5 Ti, 0.9 Cb, 0.04 C	Alloy X-750 is a nickel chromium alloy similar to Alloy 600 but made precipitation hardenable by additions of aluminum and titanium
904L		N08904	21	25	4.5	0.5	45	1.7 Mn, 1.6 Cu	904L is an austenitic alloy designed for a middle to high level of corrosion resistance above the levels of 316 and 317 stainless.
400	B 127, B 163, B 164, B 165	N04400	-	66	-	0.2	1.5	1.0 Mn, 31 Cu, 0.1 C	Alloy 400 is a ductile nickel-copper alloy with resistance to a wide range of corrosive environments.
K-500	B 865	N05500	-	66	-	-	1.5	28 Cu, 2.7 Al, 0.6 Ti, 0.1 C, 1.0 Mn	Alloy K-500 is a nickel-copper alloy, which combines the excellent corrosion resistance of alloy 400 with the added advantages of greater strength and hardness.
W	5786	N10004	5.0	65	24	-	5.5	0.3 V	Alloy W is a solid solution strengthened nickel superalloy developed primarily as a filler metal for welding dissimilar alloys, AWS ERNiMo-3
C-263	5966	N07263	20	51	5.8	-	-	20 Co, 2.2 Ti, 0.4 Ti, 0.02 Zr, 0.001 B	Alloy C263 is an aluminum-titanium age hardening nickel base superalloy welding wire.

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