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SWRS 77 B

Japan JIS SWRS77B 鋼琴線料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SWRS77B / SWRS 77 B
Category Grade Standard Region/Area Standard Content
Metals SWRS 77 B JIS G3502 Japan 鋼琴線料

Chemical composition(mass fraction)(wt.%) of the SWRS 77 B

Element Min Max Similar
Si 0.1200 0.3200 -
S - 0.0250 -
P - 0.0250 -
Mn 0.6000 0.9000 -
Cu - 0.2000 -
C 0.7500 0.8000 -

Mechanical Properties of steel grade SWRS 77 B

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)
824 (≥) 625 (≥) 24 22 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade SWRS 77 B

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 - -     0.31 -  
934 588 - 14.3 234   -  
598 - 33 11.2   344 341

Heat Treatment of steel grade SWRS 77 B

Heat treated : 1331°C - 1529°C

Technological Curves of steel grade SWRS 77 B

Cross Reference Table (Equivalent Grade) of SWRS 77 B

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