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Grade7

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Grade6 Grade8
#Grade7

Description

USA ASTM Grade7 Steel Castings Suitable for Pressure Service and Grade7 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: Grade7
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy Grade7 ASTM USA Steel Castings Suitable for Pressure Service
4340
4620
6150
8620
8630
52100
Grade1
Grade2
Grade4
Grade6

Chemical composition(mass fraction)(wt.%) of the Grade7

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) Cu(%) B(%)
0.05-0.20 0.8 0.60-1.00 0.04 0.045 0.40-0.80 0.70-1.00 0.40-0.60 0.03-0.10 0.15-0.50 0.002-0.006

Mechanical Properties of steel grade Grade7

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)
769 (≥) 114 (≥) 11 31 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade Grade7

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
22 - -     0.14 -  
912 281 - 22.3 121   -  
918 - 14 12.2   214 242

Heat Treatment of steel grade Grade7

Heat treated : 1651°C - 1753°C

Technological Curves of steel grade Grade7

Cross Reference Table (Equivalent Grade) of Grade7

Grade Standard Country Application
Grade7 ASTM USA Steel Castings Suitable for Pressure Service
Grade7 ASTM USA Steel Castings Suitable for Pressure Service
Grade 7 B.S. UK Steel for cold forged fasteners and similar components
Grade6 Grade8
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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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