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STKR400

Favorite Datasheet

China 宝钢Q/BQB STKR400 一般结构用方、矩形焊管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STKR400 / STKR400
Category Grade Standard Region/Area Standard Content
Metals STKR400 Q/BQB 291 China 一般结构用方、矩形焊管

Chemical composition(mass fraction)(wt.%) of the STKR400

Element Min Max Similar
S - 0.0300 -
P - 0.0300 -
C - 0.2500 -

Mechanical Properties of steel grade STKR400

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)
424 (≥) 976 (≥) 44 43 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade STKR400

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
43 - -     0.23 -  
679 587 - 34.3 141   -  
236 - 11 43.2   444 442

Heat Treatment of steel grade STKR400

Heat treated : 1537°C - 1753°C

Technological Curves of steel grade STKR400

Cross Reference Table (Equivalent Grade) of STKR400

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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