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SAE-AISI M43 Steel vs. S35115 Stainless Steel

Both SAE-AISI M43 steel and S35115 stainless steel are iron alloys. They have 58% 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 M43 steel and the bottom bar is S35115 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
79
Tensile Strength: Ultimate (UTS), MPa 810 to 2290
670

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1550
1420
Melting Onset (Solidus), °C 1500
1370
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 19
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 33
26
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 8.5
4.8
Embodied Energy, MJ/kg 120
67
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 35
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 77
24
Strength to Weight: Bending, points 24 to 47
22
Thermal Diffusivity, mm2/s 5.3
3.9
Thermal Shock Resistance, points 25 to 71
15

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.030
Chromium (Cr), % 3.5 to 4.3
23 to 25
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.8 to 76
47.6 to 55.8
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 7.5 to 8.5
1.5 to 2.5
Nickel (Ni), % 0 to 0.3
19 to 22
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.15 to 0.65
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 2.3 to 3.0
0
Vanadium (V), % 1.5 to 1.8
0