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SAE-AISI M30 Steel vs. S41050 Stainless Steel

Both SAE-AISI M30 steel and S41050 stainless steel are iron alloys. They have 83% 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 M30 steel and the bottom bar is S41050 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 78
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2170
470

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1550
1440
Melting Onset (Solidus), °C 1500
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 24
27
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 26
7.0
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.2
1.9
Embodied Energy, MJ/kg 100
27
Embodied Water, L/kg 120
97

Common Calculations

PREN (Pitting Resistance) 35
12
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 74
17
Strength to Weight: Bending, points 24 to 46
17
Thermal Diffusivity, mm2/s 6.6
7.2
Thermal Shock Resistance, points 25 to 67
17

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.040
Chromium (Cr), % 3.5 to 4.3
10.5 to 12.5
Cobalt (Co), % 4.5 to 5.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.2 to 80.9
84.2 to 88.9
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 7.8 to 9.0
0
Nickel (Ni), % 0 to 0.3
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
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), % 1.3 to 2.3
0
Vanadium (V), % 1.0 to 1.4
0