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SAE-AISI M43 Steel vs. AISI 446 Stainless Steel

Both SAE-AISI M43 steel and AISI 446 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M43 steel and the bottom bar is AISI 446 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 810 to 2290
570

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1550
1510
Melting Onset (Solidus), °C 1500
1430
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 19
17
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 33
12
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 8.5
2.4
Embodied Energy, MJ/kg 120
35
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 35
27
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 27 to 77
21
Strength to Weight: Bending, points 24 to 47
20
Thermal Diffusivity, mm2/s 5.3
4.6
Thermal Shock Resistance, points 25 to 71
19

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.2
Chromium (Cr), % 3.5 to 4.3
23 to 27
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.8 to 76
69.2 to 77
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
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.65
0 to 1.0
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