440A

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#440A

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440A High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 440A

Category	Type	Steel Grade
Steel Grades	High Alloy	440A
		403
		S40300
		410
		S41000
		414
		S41400
		420
		S42000
		431
		S43100

Chemical composition(mass fraction)(wt.%) of the 440A

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.6-0.75	1	1	0.04	0.03	16-18
Mo	Al	Cu	Nb	Ti	V	Ce
≤0.75
N	Co	Pb	B	Other

Mechanical Properties of steel grade 440A

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
969 (≥)	564 (≥)	14	43	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	331

Physical Properties of steel grade 440A

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
24	-	-			0.14	-
188	256	-	33.3	312		-
951	-	43	22.2			142	233

Heat Treatment of steel grade 440A

Heat treated : 1225°C - 1887°C

Technological Curves of steel grade 440A

No Curve

Cross Reference Table (Equivalent Grade) of 440A

Grade	Standard	Country	Application
AISI 440A	AISI	China	Martensitic special steel
ASTM 440A	ASTM	USA	Martensitic special steel
SUS440A	JIS	Japan	Martensitic special steel
STS440A			martensitic steel
STS440A			martensitic steel
CNS 440A		China	CNS standard martensite stainless steel
CNS 440A		China	China Taiwan Stainless steel
CNS 440A		China	China Taiwan Stainless steel

Available Suppliers

Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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