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SAE-AISI M6 Steel vs. S82441 Stainless Steel

Both SAE-AISI M6 steel and S82441 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is S82441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
760

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1560
1430
Melting Onset (Solidus), °C 1510
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
16
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.0
3.2
Embodied Energy, MJ/kg 120
45
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 28
33
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
27
Strength to Weight: Bending, points 24 to 45
24
Thermal Diffusivity, mm2/s 4.7
3.9
Thermal Shock Resistance, points 26 to 68
21

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
23 to 25
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0.1 to 0.8
Iron (Fe), % 68.8 to 74.6
62.6 to 70.2
Manganese (Mn), % 0.15 to 0.4
2.5 to 4.0
Molybdenum (Mo), % 4.5 to 5.5
1.0 to 2.0
Nickel (Ni), % 0
3.0 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.45
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.0050
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0