WQ620D

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China 舞钢Q/WTB WQ620D 焊接结构用调质高强度钢板技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: WQ620D / WQ620D

Category	Grade	Standard	Region/Area	Standard Content
Metals	WQ620D	WJX 031	China	焊接结构用调质高强度钢板技术条件

Chemical composition(mass fraction)(wt.%) of the WQ620D

Element	Min	Max	Similar
Ceq	-	0.6500	-
Ceq	-	0.5000	-
B	-	0.0030	-
V	-	0.0800	-
Nb	-	0.0600	-
Mo	-	0.6000	-
Ni	-	2.0000	-
Cr	-	1.5000	-
Al	0.0200	-	-
S	-	0.0150	-
P	-	0.0200	-
Mn	-	1.6000	-
Si	-	0.5000	-
C	-	0.2000	-

Mechanical Properties of steel grade WQ620D

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)
938 (≥)	334 (≥)	33	43	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	214

Physical Properties of steel grade WQ620D

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
31	-	-			0.31	-
539	668	-	31.3	323		-
749	-	11	23.2			331	343

Heat Treatment of steel grade WQ620D

Heat treated : 1374°C - 1694°C

Technological Curves of steel grade WQ620D

No Curve

Cross Reference Table (Equivalent Grade) of WQ620D

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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Rfq.: sales@longhaisteel.com

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