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STKM12A

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STKM11A STKM12B
#STKM12A

Description

China CNS STKM12A China Taiwan Structural steel and STKM12A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: STKM12A
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel STKM12A CNS China China Taiwan Structural steel
S55C
S58C
S9CK
S15CK
S20CK
SAPH32
SAPH38
SAPH41
SAPH45
STKM11A

Chemical composition(mass fraction)(wt.%) of the STKM12A

C(％) Si(％) Mn(％) P(％) S(％)
Max 0.20 0.35 Max 0.60 0.04 0.04

Mechanical Properties of steel grade STKM12A

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)
622 (≥) 784 (≥) 11 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade STKM12A

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
41 - -     0.32 -  
446 647 - 14.3 141   -  
578 - 14 43.2   332 334

Heat Treatment of steel grade STKM12A

Heat treated : 1676°C - 1759°C

Technological Curves of steel grade STKM12A

Cross Reference Table (Equivalent Grade) of STKM12A

Grade Standard Country Application
STKM12A CNS China China Taiwan Structural steel
STKM11A STKM12B
Available Suppliers
Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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