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A 959 Type 25-4-4


A 959 Type 25-4-4 material is SAE A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels.

Chemical composition of A 959 Type 25-4-4, A 959 Type 25-4-4 mechanical properties, A 959 Type 25-4-4 datasheet, A 959 Type 25-4-4 equivalent grade, Heat treatment and temperature process of A 959 Type 25-4-4.


A 959 Type 25-4-4 property sheet

A 959 Type 25-4-4 Spec.

SAE A 959 (2011)
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Chemical Composition of A 959 Type 25-4-4

C: Max 0.025
Si: Max 0.75
Mn: Max 1.00
P: Max 0.04
S: Max 0.04
Ni: 3.35 4.50
Cr: 24.50 26.00
Al: Max Min
Cu: Max 0.50
Ti: Max Min
Fe: Max Min
N: Max 0.035
Mo: 3.50 4.50

Mechanical Properties of A 959 Type 25-4-4

Rp0.2 (MPa) 592 (≥)
Rm (MPa) 281 (≥)
AKV (J) 32
A (%) 21
Z (%) 12
Hardness HBW 121

A 959 Type 25-4-4 shape and dimensions

A 959 Type 25-4-4 Round bar: 1mm-800mm
A 959 Type 25-4-4 Square bar: 10mm * 10mm-600mm *600mm
A 959 Type 25-4-4 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
A 959 Type 25-4-4 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
A 959 Type 25-4-4 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
A 959 Type 25-4-4 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes