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SAE-AISI M43 Steel vs. SAE-AISI S2 Steel

Both SAE-AISI M43 steel and SAE-AISI S2 steel are iron alloys. They have 76% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M43 steel and the bottom bar is SAE-AISI S2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 810 to 2290
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1550
1450
Melting Onset (Solidus), °C 1500
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 19
44
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 33
2.6
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.1
Embodied Energy, MJ/kg 120
30
Embodied Water, L/kg 140
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 77
24 to 69
Strength to Weight: Bending, points 24 to 47
22 to 44
Thermal Diffusivity, mm2/s 5.3
12
Thermal Shock Resistance, points 25 to 71
23 to 68

Alloy Composition

Carbon (C), % 1.2 to 1.3
0.4 to 0.55
Chromium (Cr), % 3.5 to 4.3
0
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 70.8 to 76
96 to 98.1
Manganese (Mn), % 0.2 to 0.4
0.3 to 0.5
Molybdenum (Mo), % 7.5 to 8.5
0.3 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.65
0.9 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 2.3 to 3.0
0
Vanadium (V), % 1.5 to 1.8
0 to 0.5

Comparable Variants