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SAE-AISI M6 Steel vs. S30435 Stainless Steel

Both SAE-AISI M6 steel and S30435 stainless steel are iron alloys. They have 76% 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 S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
510

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1560
1420
Melting Onset (Solidus), °C 1510
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
14
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.9
Embodied Energy, MJ/kg 120
40
Embodied Water, L/kg 160
140

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
18
Strength to Weight: Bending, points 24 to 45
18
Thermal Diffusivity, mm2/s 4.7
4.2
Thermal Shock Resistance, points 26 to 68
12

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
16 to 18
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 68.8 to 74.6
66.9 to 75.5
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
7.0 to 9.0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0