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SAE-AISI M2 Steel vs. S30530 Stainless Steel

Both SAE-AISI M2 steel and S30530 stainless steel are iron alloys. They have 72% 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 M2 steel and the bottom bar is S30530 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
77
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
590

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1610
1410
Melting Onset (Solidus), °C 1570
1370
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
18
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
3.4
Embodied Energy, MJ/kg 130
48
Embodied Water, L/kg 98
150

Common Calculations

PREN (Pitting Resistance) 31
22
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 25 to 71
21
Strength to Weight: Bending, points 22 to 44
20
Thermal Diffusivity, mm2/s 5.9
4.1
Thermal Shock Resistance, points 27 to 76
13

Alloy Composition

Carbon (C), % 0.78 to 1.1
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
17 to 20.5
Copper (Cu), % 0 to 0.25
0.75 to 3.5
Iron (Fe), % 78.5 to 83.4
58.4 to 72.5
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.5 to 5.5
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
8.5 to 11.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0.5 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0