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Description

SACM645 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SACM645
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SACM645
SNCM240
SNCM415
SNCM420
SNCM431
SNCM439
SNCM447
SNCM616
SNCM625
SNCM630
SNCM815

Chemical composition(mass fraction)(wt.%) of the SACM645

C
Si
Mn
P
S
Cr Ni
0.4-0.5 0.15-0.5 0.6 0.03 0.03 1.3-1.7  
Mo Al Cu Nb Ti V Ce
0.15-0.3 0.7-1.2          
N Co Pb B Other    
             
             

Mechanical Properties of steel grade SACM645

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)
876 (≥) 848 (≥) 21 44 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade SACM645

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 - -     0.12 -  
457 739 - 23.3 124   -  
933 - 34 33.2   234 143

Heat Treatment of steel grade SACM645

Heat treated : 1233°C - 1998°C

Technological Curves of steel grade SACM645

Cross Reference Table (Equivalent Grade) of SACM645

Grade Standard Country Application
SACM645 China China Taiwan Structural steel

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