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Description

China CNS SPHT4 China Taiwan Structural steel and SPHT4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SPHT4
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SPHT4 CNS China China Taiwan Structural steel
SM490B
SM490C
SM490YA
SM490YB
SM520YB
SM520YC
SM570
SPHT1
SPHT2
SPHT3

Chemical composition(mass fraction)(wt.%) of the SPHT4

C(%) Si(%) Mn(%) P(%) S(%)
0.30 0.35 0.30-1.00 0.04 0.04

Mechanical Properties of steel grade SPHT4

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)
898 (≥) 654 (≥) 33 12 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade SPHT4

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
22 - -     0.44 -  
439 224 - 24.3 223   -  
486 - 11 41.2   344 144

Heat Treatment of steel grade SPHT4

Heat treated : 1688°C - 1444°C

Technological Curves of steel grade SPHT4

Cross Reference Table (Equivalent Grade) of SPHT4

Grade Standard Country Application
SPHT4 CNS China China Taiwan Structural steel

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