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51B40

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5140 5145
#51B40

Description

Australia AS 51B40 Australia Structural steel and 51B40 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 51B40
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 51B40 AS Australia Australia Structural steel
4130
4140
4150
X4317
X4330
4340
4620
5120
5132
5140

Chemical composition(mass fraction)(wt.%) of the 51B40

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%)
0.38-0.43 0.10-0.35 0.70-0.90 0.04 0.04 0.70-0.90 0.000 5

Mechanical Properties of steel grade 51B40

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)
531 (≥) 474 (≥) 33 44 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 51B40

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
32 - -     0.24 -  
976 691 - 32.3 421   -  
218 - 24 13.2   411 212

Heat Treatment of steel grade 51B40

Heat treated : 1476°C - 1352°C

Technological Curves of steel grade 51B40

Cross Reference Table (Equivalent Grade) of 51B40

Grade Standard Country Application
51B40 AS Australia Australia Structural steel
5140 5145
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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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