Alloy840

HuaNickel Alloy840 is an austenitic stainless steel containing titanium and aluminum, which has good high temperature stability and corrosion resistance. Alloy840 is used in heating tubes, heat exchangers, equipment heaters, industrial furnaces and other equipment.

Alloy840Chemical composition：

C	Si	Mn	P	S	Ni	Cr	Al	Ti
≤0.08	≤1.0	≤1.0	≤0.030	≤0.015	18.00~ 22.00	18.00~ 22.00	≤0.6	≤0.6

Alloy840Physical properties：

Density g/cm3	Thermal conductivityw/(m.k)100~90℃	Resistivity℃)/  (2.mm2/m)20~900℃	Specific heat capacity℃)/kg/(kg.k)C100~900℃	Linear expansion coefficient(10-6/k)20~900℃
7.93	14.20~276	0.914~1.225		15.37~20.45
temperature0/℃	20
hardnessHB	248~341

Alloy840Mechanical properties：

		0.2%Yield strength [N/mm²]	Tensile strength [N/mm²]	Elongation [%]	hardness [HV]
Standard value		≥205	≥520	≥30	≤170
Case	Cold-rolled steel plate       0.4mmt	270	540	45	130

Alloy840Alloy properties：

High Temperature Resistance:HuaNickel Alloy840 is an austenitic stainless steel with enough chromium and titanium to make it perform well at high temperatures.

Corrosion resistance: Alloy840 has excellent corrosion resistance, especially to sulfates, chlorides, nitrates and other media.

Alloy840Uses of alloys：

Incoloy84 is mainly used in petrochemical, power industry, aerospace and chemical industries. Alloy840 alloy can be used in the manufacture of electric heating pipes, heat exchangers, equipment heaters, industrial heating furnaces and other equipment, and is also commonly used in automobile exhaust systems.

Alloy840Process performance：

Welding process: HuaNickel Alloy840 can be joined by a variety of welding methods, including arc welding, argon arc welding, resistance welding, and brazing. These methods are suitable for different welding needs and environments.

Relevant standards：

ASTM A240、ASME SA-240、UNS S33400、NAS H840

Contact