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J-55

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C-75 N-80
#J-55

Description

Romania STAS/SR J-55 Structural steel and J-55 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: J-55
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel J-55 STAS/SR Romania Structural steel
E40
1b
2a
3a
OLT35
OLT65
10Ni35
OLT35R
OLT45R
C-75

Chemical composition(mass fraction)(wt.%) of the J-55

P(％) S(％)
0.040 0.060

Mechanical Properties of steel grade J-55

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)
493 (≥) 153 (≥) 34 14 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade J-55

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
41 - -     0.31 -  
539 362 - 12.3 131   -  
731 - 42 11.2   412 243

Heat Treatment of steel grade J-55

Heat treated : 1912°C - 1851°C

Technological Curves of steel grade J-55

Cross Reference Table (Equivalent Grade) of J-55

Grade Standard Country Application
J-55 STAS/SR Romania Structural steel
C-75 N-80
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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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