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CSN G639.90

G639.90


G639.90 material is The Czech republic Structural steel.

Chemical composition of G639.90, G639.90 mechanical properties, G639.90 datasheet, G639.90 equivalent grade, Heat treatment and temperature process of G639.90.


G639.90 property sheet

G639.90 Spec.

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Chemical Composition of G639.90

C 1.80-2.40
Si Max 0.50
Mn Max 0.50
Cr 25.0- 30.0
W 10.0-15.0
Co 45.0-55.0
Nb WiCo

Mechanical Properties of G639.90

Rp0.2 (MPa) 884 (≥)
Rm (MPa) 988 (≥)
AKV (J) 24
A (%) 34
Z (%) 32
Hardness HBW 332

G639.90 shape and dimensions

G639.90 Round bar: 1mm-800mm
G639.90 Square bar: 10mm * 10mm-600mm *600mm
G639.90 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
G639.90 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
G639.90 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
G639.90 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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