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STKM12B

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STKM12A STKM12C
#STKM12B

Description

China CNS STKM12B China Taiwan Structural steel and STKM12B Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: STKM12B
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel STKM12B CNS China China Taiwan Structural steel
S58C
S9CK
S15CK
S20CK
SAPH32
SAPH38
SAPH41
SAPH45
STKM11A
STKM12A

Chemical composition(mass fraction)(wt.%) of the STKM12B

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

Mechanical Properties of steel grade STKM12B

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)
236 (≥) 955 (≥) 44 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade STKM12B

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
12 - -     0.11 -  
174 743 - 22.3 231   -  
742 - 34 32.2   112 144

Heat Treatment of steel grade STKM12B

Heat treated : 1434°C - 1123°C

Technological Curves of steel grade STKM12B

Cross Reference Table (Equivalent Grade) of STKM12B

Grade Standard Country Application
STKM12B CNS China China Taiwan Structural steel
STKM12A STKM12C
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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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