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SAE-AISI M43 Steel vs. N08801 Stainless Steel

Both SAE-AISI M43 steel and N08801 stainless steel are iron alloys. They have 50% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M43 steel and the bottom bar is N08801 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 810 to 2290
860

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1550
1390
Melting Onset (Solidus), °C 1500
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 19
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 33
30
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 8.5
5.5
Embodied Energy, MJ/kg 120
79
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 35
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 77
30
Strength to Weight: Bending, points 24 to 47
25
Thermal Diffusivity, mm2/s 5.3
3.3
Thermal Shock Resistance, points 25 to 71
20

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.1
Chromium (Cr), % 3.5 to 4.3
19 to 22
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 70.8 to 76
39.5 to 50.3
Manganese (Mn), % 0.2 to 0.4
0 to 1.5
Molybdenum (Mo), % 7.5 to 8.5
0
Nickel (Ni), % 0 to 0.3
30 to 34
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.65
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.75 to 1.5
Tungsten (W), % 2.3 to 3.0
0
Vanadium (V), % 1.5 to 1.8
0