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8740

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8660 9255
#8740

Description

Australia AS 8740 Australia Structural steel and 8740 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 8740
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 8740 AS Australia Australia Structural steel
5140
51B40
5145
5155
5160
6150
8115
8617
8620
8660

Chemical composition(mass fraction)(wt.%) of the 8740

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.38-0.43 0.10-0.35 0.75-1.00 0.04 0.040 0.40-0.60 0.40-0.70 0.20-0.30

Mechanical Properties of steel grade 8740

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)
256 (≥) 234 (≥) 42 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 8740

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
11 - -     0.43 -  
985 931 - 14.3 331   -  
951 - 12 33.2   313 142

Heat Treatment of steel grade 8740

Heat treated : 1957°C - 1777°C

Technological Curves of steel grade 8740

Cross Reference Table (Equivalent Grade) of 8740

Grade Standard Country Application
8740 AS Australia Australia Structural steel
8740H AS Australia Australia Structural steel
8660 9255
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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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