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A21

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B2 26MnSil7
#A21

Description

Romania STAS/SR A21 Structural steel and A21 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: A21
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel A21 STAS/SR Romania Structural steel
OLC60S
OLC60X
OLC60XS
OLC8
OLC8S
OLC8X
OLC8XS
L-410
B1
B2

Chemical composition(mass fraction)(wt.%) of the A21

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
Min 0.10 Min 0.30 0.40-1.00 0.035 0.035 0.03 0.1 0.1

Mechanical Properties of steel grade A21

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)
451 (≥) 322 (≥) 23 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade A21

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
42 - -     0.14 -  
156 978 - 11.3 232   -  
155 - 13 24.2   443 443

Heat Treatment of steel grade A21

Heat treated : 1266°C - 1169°C

Technological Curves of steel grade A21

Cross Reference Table (Equivalent Grade) of A21

Grade Standard Country Application
A21 STAS/SR Romania Structural steel
B2 26MnSil7
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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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