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SAE-AISI M10 Steel vs. S40930 Stainless Steel

Both SAE-AISI M10 steel and S40930 stainless steel are iron alloys. They have 89% 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 M10 steel and the bottom bar is S40930 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 76
75
Tensile Strength: Ultimate (UTS), MPa 740 to 2170
430

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1520
1450
Melting Onset (Solidus), °C 1470
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 31
25
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 14
8.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.3
Embodied Energy, MJ/kg 120
32
Embodied Water, L/kg 100
94

Common Calculations

PREN (Pitting Resistance) 31
11
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 76
16
Strength to Weight: Bending, points 23 to 47
16
Thermal Diffusivity, mm2/s 8.5
6.7
Thermal Shock Resistance, points 23 to 68
16

Alloy Composition

Carbon (C), % 0.84 to 1.1
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
10.5 to 11.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 82.3 to 85.6
84.7 to 89.4
Manganese (Mn), % 0.1 to 0.4
0 to 1.0
Molybdenum (Mo), % 7.8 to 8.5
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0
0.080 to 0.75
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.050 to 0.2
Vanadium (V), % 1.8 to 2.2
0