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ASTM A225 Steel vs. AISI 422 Stainless Steel

Both ASTM A225 steel and AISI 422 stainless steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A225 steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 250
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 23
15 to 17
Fatigue Strength, MPa 330 to 390
410 to 500
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 390 to 520
560 to 660
Tensile Strength: Ultimate (UTS), MPa 620 to 830
910 to 1080
Tensile Strength: Yield (Proof), MPa 460 to 550
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
650
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1470
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
24
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.8
3.1
Embodied Energy, MJ/kg 24 to 25
44
Embodied Water, L/kg 48
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 29
32 to 38
Strength to Weight: Bending, points 21 to 25
26 to 30
Thermal Diffusivity, mm2/s 14
6.4
Thermal Shock Resistance, points 18 to 24
33 to 39

Comparable Variants