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SA-437 Grade B4C


SA-437 Grade B4C material is AMS SA-437/SA-437M Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service.

Chemical composition of SA-437 Grade B4C, SA-437 Grade B4C mechanical properties, SA-437 Grade B4C datasheet, SA-437 Grade B4C equivalent grade, Heat treatment and temperature process of SA-437 Grade B4C.


SA-437 Grade B4C property sheet

SA-437 Grade B4C Spec.

AMS SA-437/SA-437M
Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service

Chemical Composition of SA-437 Grade B4C

C: Max 0.01
Si: Max 0.05
Mn: Max 1.50
P: Max 0.04
S: Max 0.01
Ni: Max remaining
Cr: 0.50 1.50
Al: 0.10 0.50
Cu: Max 0.50
Ti: Max Min
Fe: 1.00 6.00
Mo: 26.00 30.00
Co: Max 2.50

Mechanical Properties of SA-437 Grade B4C

Rp0.2 (MPa) 155 (≥)
Rm (MPa) 289 (≥)
AKV (J) 44
A (%) 12
Z (%) 24
Hardness HBW 233

SA-437 Grade B4C shape and dimensions

SA-437 Grade B4C Round bar: 1mm-800mm
SA-437 Grade B4C Square bar: 10mm * 10mm-600mm *600mm
SA-437 Grade B4C Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SA-437 Grade B4C Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SA-437 Grade B4C Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SA-437 Grade B4C Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes