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Q390B

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China 舞钢Q/WTB Q390B 大厚度低合金结构钢Q390技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q390B / Q390B
Category Grade Standard Region/Area Standard Content
Metals Q390B WYJ 102 China 大厚度低合金结构钢Q390技术条件

Chemical composition(mass fraction)(wt.%) of the Q390B

Element Min Max Similar
Ti - 0.2000 -
Cu - 0.3000 -
V - 0.2000 -
Nb - 0.0700 -
Ni - 0.5000 -
Mo - 0.1000 -
Cr - 0.3000 -
S - 0.0150 -
P - 0.0200 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -

Mechanical Properties of steel grade Q390B

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
474 (≥) 581 (≥) 14 12 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade Q390B

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
33 - -     0.23 -  
841 525 - 14.3 421   -  
829 - 23 22.2   212 423

Heat Treatment of steel grade Q390B

Heat treated : 1623°C - 1938°C

Technological Curves of steel grade Q390B

Cross Reference Table (Equivalent Grade) of Q390B

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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Jiangyou Longhai Special Steel Co.,Ltd.

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