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China YB Q275D 输电铁塔用冷弯型钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q275D / Q275D
Category Grade Standard Region/Area Standard Content
Metals Q275D YB/T 4206 China 输电铁塔用冷弯型钢

Chemical composition(mass fraction)(wt.%) of the Q275D

Element Min Max Similar
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Si - 0.3500 -
C - 0.2000 -
C - 0.2000 -
Si - 0.3500 -
Mn - 1.5000 -
S - 0.0350 -
P - 0.0350 -
Cr - 0.3000 -
Ni - 0.3000 -
Cu - 0.3000 -
N - 0.0080 -
As - 0.0800 -
N - 0.0080 -
Cu - 0.3000 -
Ni - 0.3000 -
Cr - 0.3000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Si - 0.3500 -
C - 0.2000 -
N - 0.0080 -
Cu - 0.3000 -
Ni - 0.3000 -
Cr - 0.3000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Si - 0.3500 -
C - 0.2000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Si - 0.3500 -
C - 0.2000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Si - 0.3500 -
C - 0.2000 -

Mechanical Properties of steel grade Q275D

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)
249 (≥) 339 (≥) 43 24 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade Q275D

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
44 - -     0.13 -  
736 685 - 14.3 313   -  
479 - 33 41.2   421 321

Heat Treatment of steel grade Q275D

Heat treated : 1887°C - 1755°C

Technological Curves of steel grade Q275D

Cross Reference Table (Equivalent Grade) of Q275D

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