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SAE-AISI M1 Steel vs. S44537 Stainless Steel

Both SAE-AISI M1 steel and S44537 stainless steel are iron alloys. They have 80% 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 M1 steel and the bottom bar is S44537 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 730 to 2140
510

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1560
1480
Melting Onset (Solidus), °C 1510
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 29
21
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 18
19
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 7.0
3.4
Embodied Energy, MJ/kg 99
50
Embodied Water, L/kg 98
140

Common Calculations

PREN (Pitting Resistance) 35
26
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 73
18
Strength to Weight: Bending, points 22 to 45
18
Thermal Diffusivity, mm2/s 8.0
5.6
Thermal Shock Resistance, points 23 to 66
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.78 to 0.88
0 to 0.030
Chromium (Cr), % 3.5 to 4.0
20 to 24
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 81 to 84.8
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Manganese (Mn), % 0.15 to 0.4
0 to 0.8
Molybdenum (Mo), % 8.2 to 9.2
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.030
0 to 0.050
Silicon (Si), % 0.2 to 0.5
0.1 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.0060
Titanium (Ti), % 0
0.020 to 0.2
Tungsten (W), % 1.4 to 2.1
1.0 to 3.0
Vanadium (V), % 1.0 to 1.4
0