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Description

Romania STAS/SR 56Sil7A Alloy structural steel and 56Sil7A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 56Sil7A
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 56Sil7A STAS/SR Romania Alloy structural steel
OLC45AT
OLC50AT
OIX5 5 AT
OLX60AT
17MoNi35
20MoCrNi06
22MoCrNi0S
40Sil7A
51Sil7A
SIVCr11A

Chemical composition(mass fraction)(wt.%) of the 56Sil7A

C(%) Si(%) Mn(%) S(%) Cr(%) Ni(%) Cu(%)
0.52-0.60 1.40-2.00 0.60-1.00 0.040 0.04 0.30 0.3 0.25

Mechanical Properties of steel grade 56Sil7A

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)
677 (≥) 227 (≥) 11 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade 56Sil7A

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 - -     0.13 -  
781 115 - 22.3 323   -  
922 - 21 33.2   441 344

Heat Treatment of steel grade 56Sil7A

Heat treated : 1549°C - 1729°C

Technological Curves of steel grade 56Sil7A

Cross Reference Table (Equivalent Grade) of 56Sil7A

Grade Standard Country Application
56Sil7A STAS/SR Romania Alloy structural steel

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