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China JB 60-40-18 汽轮发电机球墨铸铁定子压圈.技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 60-40-18 / 60-40-18
Category Grade Standard Region/Area Standard Content
Metals 60-40-18 JB/T 11029 China 汽轮发电机球墨铸铁定子压圈.技术条件

Chemical composition(mass fraction)(wt.%) of the 60-40-18

Element Min Max Similar
C 2.5000 - -
Mn - 0.3000 -
Si 2.5000 3.0000 -
P - 0.0700 -
S - 0.0200 -
Mg 0.0300 0.0600 -
Re 0.0200 0.0400 -

Mechanical Properties of steel grade 60-40-18

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)
729 (≥) 968 (≥) 42 21 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade 60-40-18

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
34 - -     0.32 -  
316 795 - 41.3 241   -  
482 - 13 31.2   342 224

Heat Treatment of steel grade 60-40-18

Heat treated : 1485°C - 1368°C

Technological Curves of steel grade 60-40-18

Cross Reference Table (Equivalent Grade) of 60-40-18

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