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4140H

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4130H 4150H
#4140H

Description

Australia AS 4140H Australia Structural steel and 4140H Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 4140H
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 4140H AS Australia Australia Structural steel
8740
9255
9260
9261
X9315
X9931
X9940
X1320H
X3312H
4130H

Chemical composition(mass fraction)(wt.%) of the 4140H

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％)
0.37-0.44 0.10-0.35 0.65-1.10 0.04 0.04 0.75-1.20 0.15-0.25

Mechanical Properties of steel grade 4140H

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)
933 (≥) 639 (≥) 11 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 4140H

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
14 - -     0.23 -  
948 333 - 44.3 342   -  
732 - 21 12.2   441 334

Heat Treatment of steel grade 4140H

Heat treated : 1992°C - 1846°C

Technological Curves of steel grade 4140H

Cross Reference Table (Equivalent Grade) of 4140H

Grade Standard Country Application
4140H AS Australia Australia Structural steel
4130H 4150H
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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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