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SAE-AISI M6 Steel vs. AISI 422 Stainless Steel

Both SAE-AISI M6 steel and AISI 422 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
910 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1560
1480
Melting Onset (Solidus), °C 1510
1470
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
24
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 39
11
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.0
3.1
Embodied Energy, MJ/kg 120
44
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 28
17
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
32 to 38
Strength to Weight: Bending, points 24 to 45
26 to 30
Thermal Diffusivity, mm2/s 4.7
6.4
Thermal Shock Resistance, points 26 to 68
33 to 39

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.2 to 0.25
Chromium (Cr), % 3.8 to 4.5
11 to 12.5
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
81.9 to 85.8
Manganese (Mn), % 0.15 to 0.4
0.5 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0.9 to 1.3
Nickel (Ni), % 0
0.5 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 3.8 to 4.8
0.9 to 1.3
Vanadium (V), % 1.3 to 1.7
0.2 to 0.3

Comparable Variants