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K438 material is Age hardening type Nickel base alloy.

Chemical composition of K438, K438 mechanical properties, K438 datasheet, K438 equivalent grade, Heat treatment and temperature process of K438.

K438 property sheet

K438 Spec.

Related Materials

Chemical Composition of K438

C 0.10-0.20
Si Max 0.5
Mn Max 0.5
P Max 0.015
S Max 0.01
Cr 15.5-16.5
Ni Balance
Mo 1.50-2.00
W 2.40-2.80
Co 8.00-9.00
B 0.005-0.015
Nb 0.50-1.10
Al 3.20-3.70
Ti 3.00-3.50
Ta 1.50-2.00
other Zr:0.05-0.15

Mechanical Properties of K438

Rp0.2 (MPa) 883 (≥)
Rm (MPa) 782 (≥)
AKV (J) 23
A (%) 22
Z (%) 11
Hardness HBW 433

K438 shape and dimensions

K438 Round bar: 1mm-800mm
K438 Square bar: 10mm * 10mm-600mm *600mm
K438 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
K438 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
K438 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
K438 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes