Nickel Specialty Series
CWI Nickel Specialty Series Monel 400 is a nickel-copper alloy with superior corrosion resistance in a wide variety of media.
UNS N04400 – Ni: 63.0-70.0% and Cu: 28.0-34.0% with full chemistry to ASTM B164
CWI Nickel Specialty Series Monel K500 is a precipitation-hardenable nickel-copper alloy which combines the superior corrosion resistance of alloy 400 with an enhanced strength and hardness.
UNS N05500 – Al: 2.3-3.15%, Ni: 63.0-70.0%, Ti: 0.35-0.85% and Cu: 27.0-33.0% with full chemistry to ASTM B865
CWI Nickel Specialty Series Inconel 600 is a non-magnetic, nickel-chromium solid solution strengthened alloy with excellent carburization and good oxidation resistance at elevated temperature.
UNS N06600 – Cr: 14.0-17.0%, Fe: 6.0-10.0% and Ni: 72.0% minimum per ASTM B166
CWI Nickel Specialty Series 601 is a nickel-chromium-iron alloy offering a great resistance to heat and corrosion with good workability.
UNS N06601 – Al: 1.0-1.7%, Cr: 21.0-25.0% and Ni: 58.0-63.0% with full chemistry to ASTM B166
CWI Nickel Specialty Series Inconel 625 is a nickel-based alloy used for its high strength as well as outstanding corrosion resistance.
UNS N06625 – Cr: 20.0-23.0%, Mo: 8.0-1.0% Ni: 58.0% min and Cb: 3.15-4.15%
CWI Nickel Specialty Series 718 is a precipitation hardenable nickel-based alloy designed to display exceptionally high yield, tensile and creep-rupture properties at temperature up to 1300°F (704°C).
UNS N07718 – Cb: 4.75-5.50%, Cr: 17.0-21.0%, Mo: 2.8-3.3%, Ni: 50.0-55.0%, Ti: 0.65-1.15%
CWI Nickel Specialty Series Inconel 825 is an austenitic nickel-iron-chromium alloy with addition of molybdenum and copper. It has excellent resistance to both reducing and oxidizing environments.
UNS N08825 – Cr: 19.5-23.5%, Cu: 1.5-3.0%, Mo: 2.5-3.5%, Ni: 38.0-46.0% and Fe: Balance with full chemistry to ASTM B425
Specialty Series Alloys
CWI Specialty Series Alloy X-750 is a precipitation hardenable nickel-chromium alloy used for its corrosion and oxidation resistance at temperatures to 1300°F (704°C).
UNS N07750 – Al: 0.40-1.0%, Cb: 0.70-1.20%, Cr: 14.0-17.0%, Fe: 5.0-9.0%, Ni: 70% min and Ti: 2.25-2.75% with full chemistry to AMS 5698
CWI Specialty Series Hastelloy X®* is a solid solution strengthened nickel-based alloy that provides outstanding oxidation resistance and maintains its strength at elevated temperatures.
UNS N06002 – Co: 0.5-2.5%, Cr: 20.5-23.0%, Fe: 17.0-20.0%, Mo: 8.0-10.0%, W: 0.20-1.0 and Ni: Balance with full chemistry to AMS 5754
CWI Nickel Prime Series C276 is a solid-solution-strengthened, nickel-molybdenum-chromium alloy with a small amount of tungsten, which exhibits excellent corrosion resistance in a wide range of aggressive environments.
UNS N10276 – Cr: 14.5-16.5%, Fe: 4.0-7.0, Mo: 15.0-17.0% and balance Nickel, per ASTM B574
CWI Nickel Prime Series MP35N®* is a multi-phase, nickel-cobalt based alloy that has a unique combination of ultrahigh tensile strength, good toughness and excellent corrosion resistance.
UNS R30035 – Cr: 19.0-21.0%, Mo: 9.0-10.5%, Ni: 33.0-37.0% and Co: Balance per AMS 5844
CWI Nickel Prime Series 35-19Cb is an austenitic nickel-chromium alloy, similar to 330 with addition of niobium (columbium). It is suitable for high temperature application up to 2012°F (1100°C).
CWI Nickel Prime Series 330 is an austenitic nickel-chromium alloy that offers excellent oxidation as well as carburization resistance up to 2200°F (1200°C).
UNS N08330 – Cr: 17.0-20.0%, Ni: 34.0-37.0%, Si: 0.75-1.5% and Sn: 0.025% max with full chemistry to AMS 5716
CWI Nickel Prime Series 20 (20Cb3) is an iron-based, austenitic alloy with outstanding corrosion resistance in a number of different environments. It also offers an excellent resistance to hot sulfuric acid.
UNS N08020 – Cr: 19.0-21.0%, Cu: 3.0-4.0%, Mo: 2.0-3.0%, Ni: 32.0-38.0% and Cb: 8xC – 1.0% with full chemistry to ASTM B471, B473 and B475
CWI Hi-Strength Series Stainless 904L is a low carbon, high alloy austenitic stainless steel designed for moderate to high corrosion resistance in a wide range of process environments.
UNS N08904 – Cr: 19.0%-23.0%, Mo: 4.0-5.0%, Ni: 23.0-28.0%, CU: 1.0-2.0%
CWI Nickel Prime Series Invar 36 is a nickel-iron, low expansion alloy. It is typically used for applications where dimensional changes due to temperature must be minimal.
CWI Nickel Prime Series L605 is an austenitic cobalt-base superalloy with good formability, high strength to 1500°F (816°C) and good oxidation resistance to 2000°F (1093°C).
UNS R30605 – Cr: 19.0-21.0%, Ni: 9.0-11.0%, W: 14.0-16.0% and Co: Balance per ASTM F90
Nickel Prime Series
CWI Nickel 205 is a wrought nickel alloy possessing an excellent combination of mechanical and electrical properties.
UNS N02205 – Ni: 99.0% min, Mg: 0.01-0.08%, Ti: 0.01-0.05% and Cu: 0.15% max per AMS 5555
CWI Nickel 211 has a better electrical conductivity and higher strength at elevated temperatures when compared to Nickel 200.
UNS N02211 – Ni: 93.7% min and Mn: 4.25-5.25 with full chemistry to ASTM F290
Nickel Gen4 Welding
GEN 55 is used for TIG and MIG welding of cast iron. This filler metal is extensively employed to overlay cast iron rolls. It is also used to repair castings. The weld metal of GEN 55 is harder than that of GEN 99. However, machining can be accomplished by using carbide tipped tools.
A preheat and interpass temperature of 350°F (175°C) minimum is recommended during welding, without which the weld and heat affected zones could develop cracks.
GEN 99 is used for TIG and MIG welding of cast iron. This wire is extensively employed to repair gray iron casting. It can also be used for overlay and buildup. Dilution from the casting influences the mechanical properties of the metal. The welds are easily machinable.
A preheat and interpass temperature of 350°F (175°C) minimum is recommended during welding.
GEN 208 is used for TIG, MIG, and SAW welding of nickel 200 or 201. This filler metal is also employed for overlaying on steel as well as repairing cast iron castings. It can also be used for dissimilar joints between nickel or nickel alloys to stainless or ferritic steels.
GEN 276 is used for welding of materials of similar chemical composition (UNS Number N10276), as well as dissimilar materials of nickel base alloys, steels and stainless steels. This wire also can be used for cladding steel with nickel-chromium-molybdenum weld metal.
This alloy, due to its high molybdenum content, offers excellent resistance to stress corrosion cracking, pitting, and crevice corrosion.
GEN 413 is used for TIG, MIG, and oxy-fuel welding of 70/30, 80/20 and 90/10 copper-nickel alloys. This filler metal can be used for MIG overlay on steel after a first layer with Nickel 208 (Filler Metal 61). Dissimilar-welding applications include joining copper-nickel alloys to Nickel 200 or nickel-copper alloys.
GEN 418 is used for TIG or MIG welding of nickel-copper alloys (ASTM B127, B163, B164, and B165 UNS Number N04400). This filler metal can be used for MIG overlay on steel after a first layer with nickel 208 (Filler Metal 61). Dissimilar welding applications include joining nickel-copper alloys to Nickel 200 copper-nickel alloys.
GEN 606 is used for TIG, MIG and SAW welding of base metals such as ASTM B163, B166, B167 and B168 – alloys which have UNS Number N06600. It is one of the most used nickel alloys whose applications range from cryogenic to high temperatures. This filler metal can also be used for dissimilar welding applications between various nickel alloys and stainless or carbon steels, as well as for overlaying.
GEN 617 is used for TIG, MIG, and SAW welding of nickel-chrome-cobalt-molybdenum alloys as well as between themselves and dissimilar metals, such as stainless, carbon or low alloy steels. This filler wire also can be used to overlay welding where similar chemical composition is desired. The weld metal provides optimum strength and oxidation resistance from 1500°F (815°C) up to 2100°F (1150°C).
GEN 622 is an alloy of nickel with chromium, molybdenum, and tungsten as principal alloying elements. It is used to weld alloys of similar composition as well as dissimilar joints between nickel-chromium-molybdenum alloys and stainless or carbon or low alloy steels.
It can also be used for cladding overlay as well as spraying applications. GEN 622 offers excellent corrosion resistance in oxidizing as well as reducing media in a wide variety of chemical process environments. It offers an outstanding resistance to stress corrosion cracking.
GEN 625 is used for TIG, MIG, and SAW welding of nickel-chrome-molybdenum alloys. This filler metal is very versatile in its applications. It can be used for welding of dissimilar joints between nickel-chrome-molybdenum alloys and stainless or carbon or low alloy steels. It can also be used for cladding as well as for spraying applications. GEN 625 with low iron (less than 0.8%) is preferred in various applications where dilution of iron must be controlled to the minimum.
The high alloy content of GEN 625 enables it to withstand highly corrosive environments. The combination of nickel and chromium provides the resistance to oxidizing conditions and the combination of nickel and molybdenum provides resistance to reducing conditions. Due to its molybdenum content, this alloy offers resistance to stress corrosion cracking, pitting, and crevice corrosion.
GEN 625HWT is engineered to work with the standard Gas Tungsten Arc process with an AC power source to preheat the welding wire before introduction to the GTA heat source. This enables automated systems with continuous wire feed to achieve a high quality, high deposition rate overlay.
GEN 718 is used for TIG welding alloys 718, 706, and X-750. It is mainly used for welding high-strength aircraft components, and liquid rocket components involving cryogenic temperatures. This alloy can be age hardened to higher strengths.
GEN 825 is used for TIG, MIG, and SAW welding of nickel-iron-chromium-molybdenum-copper alloys. This can also be used to overlay cladding where similar chemical composition is required.
CWI Website Alloy Summary for trademarks
MP35N® SPS Technologies, LLC.; Nitronic® AK Steel Corporation; Hastelloy®Haynes International, Inc.; MONEL® INCONEL® Huntington Alloys Corporation; INVAR® Aperam Alloys Imphy
