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1J77

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1J76 1J79
#1J77

Description

China GBT 1J77 non-retentive alloy and 1J77 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1J77
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1J77 GBT China non-retentive alloy
1J40
1J46
1J50
1J51
1J52
1J54
1J65
1J66
1J67
1J76

Chemical composition(mass fraction)(wt.%) of the 1J77

C(％) Si(％) Mn(％) P(％) S(％) Ni(％) Mo(％) Cu(%) Fe(%)
0.03 0.15-0.30 0.30-0.60 0.020 0.020 75.5-78.0 3.9-4.5 4.8-6.0 Bal

Mechanical Properties of steel grade 1J77

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)
314 (≥) 171 (≥) 11 21 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade 1J77

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
24 - -     0.22 -  
177 826 - 31.3 324   -  
138 - 32 34.2   434 334

Heat Treatment of steel grade 1J77

Heat treated : 1669°C - 1571°C

Technological Curves of steel grade 1J77

Cross Reference Table (Equivalent Grade) of 1J77

Grade Standard Country Application
1J77 GBT China non-retentive alloy
1J76 1J79
Available Suppliers
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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