MP159

HuaNickelMP159 is a multiphase cobalt-based superalloy. MP159 alloy is a nickel-cobalt-based alloy with the same properties as MP35N alloy, with resistance to stress corrosion, crevice corrosion, and hydrogen corrosion.

MP159Chemical composition：

	Cr	Co	Ni	Al	Mo	Ti	Fe	Nb	Mn	Si	P	C
Min	18.0	34.00	Bal	0.10	6.00	2.50	8.00	0.25	≤
Max	20.0	38.00		0.30	8.00	3.25	10.00	0.75	0.20	0.20	0.010	0.04

MP159Physical properties：

densityg/cm3	melting point℃	Thermal conductivity(W/m･K)	Specific heat capacityJ/kg℃	Modulus of strengthGPa	Resistivity μΩ･cm	Poisson’s ratio	Linear swelling coefficienta/10-6℃-
8.33	1318	11.3(100℃			1.033		14.3(20~100℃)

MP159Mechanical properties：

Heat treatment method	Tensile strengthMPa	Yield strengthQp0.2/MPa	Elongation05/%	Brinell hardnessHBS
Solution treatment	1795	1725	6	44

MP159Alloy properties：

Corrosion resistance: Alloy 159 is a multiphase cobalt-based superalloy with excellent corrosion resistance. MP159 alloy performs well in a variety of corrosive environments, including mineral acids, hydrogen sulfide, seawater, and salt spray.

High temperature resistance: MP159 alloy is able to maintain its properties at high temperatures, which shows that it can not only withstand extreme high temperatures.

Oxidation resistance: MP159 alloy is able to maintain stable properties under extreme high temperature conditions, not only has excellent strength and ductility, but also resists various types of corrosion and high-temperature oxidation.

MP159Uses of alloys：

MP159 alloy is known for its excellent high-temperature properties, good plasticity and excellent corrosion resistance. MP159 alloy is widely used in many fields such as aviation, shipbuilding, petroleum, environmental protection and chemical industry.

MP159Process performance

Welding process: The MP159 welding process mainly adopts the argon arc welding (TIG) method. The welding properties of MP159 (GH159) are similar to those of type 18-8 stainless steel, so they can be welded using the TIG welding process.

Heat treatment: MP159 alloy retains its high strength properties at high temperatures, mainly due to its excellent heat treatment regime.

Relevant standards：

GB/T 14992-2005，AMS 5841B，ASM 5842B GH6159