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Description

China Q215 B Engineering and welding and Q215 B Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q215 B
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q215 B China Engineering and welding
Q195
Q215
SBB 450M/SBB 46M
SBB 480/SBB 49
SBB 480M/SBB 49M
STHA 12
STHA 13
STHA 20
STHA 22
STHA 23

Chemical composition(mass fraction)(wt.%) of the Q215 B

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.09~0.15 ≤0.30 0.25~0.55 ≤0.045 ≤0.045 ≤0.30 ≤0.30 ≤0.30

Mechanical Properties of steel grade Q215 B

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)
394 (≥) 847 (≥) 33 21 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade Q215 B

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
21 - -     0.21 -  
964 629 - 33.3 114   -  
662 - 31 24.2   143 211

Heat Treatment of steel grade Q215 B

Heat treated : 1467°C - 1176°C

Technological Curves of steel grade Q215 B

Cross Reference Table (Equivalent Grade) of Q215 B

Grade Standard Country Application
Q215 China Engineering and welding
Q215 B China Engineering and welding
Q215 GBT China China structural steel and alloy steel
Q215 GBT China China structural steel and alloy steel
Q195 GBT China Engineering and welding
Q235 China Engineering and welding
Q235 B China Engineering and welding
Q235 C China Engineering and welding
Q235 D China Engineering and welding
Q255 A China Engineering and welding
Q255 B China Engineering and welding
Q275 China Engineering and welding
Q235q C China Bridge structure with steel
Q235q D China Bridge structure with steel
Q345q E China Bridge structure with steel
Q345q C China Bridge structure with steel
ASTM 1030 ASTM USA General use carbon steel bar
UNS G10300 UNS USA General use carbon steel bar

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