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4J49

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4J47 4J50
#4J49

Description

China GBT 4J49 expansionalloy and 4J49 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4J49
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4J49 GBT China expansionalloy
4J34
4J36
4J38
4J40
4J42
4J43
4J44
4J45
4J46
4J47

Chemical composition(mass fraction)(wt.%) of the 4J49

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) B(%) Fe(%)
0.05 ≤0.30 ≤0.40 0.020 0.020 5.0-6.0 46_0-48.0 ≤0.02 Bal

Mechanical Properties of steel grade 4J49

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)
549 (≥) 128 (≥) 13 21 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 4J49

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
42 - -     0.33 -  
944 154 - 11.3 123   -  
585 - 14 13.2   432 412

Heat Treatment of steel grade 4J49

Heat treated : 1913°C - 1585°C

Technological Curves of steel grade 4J49

Cross Reference Table (Equivalent Grade) of 4J49

Grade Standard Country Application
4J49 GBT China expansionalloy
4J47 4J50
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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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