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SAE-AISI M44 Steel vs. S41050 Stainless Steel

Both SAE-AISI M44 steel and S41050 stainless steel are iron alloys. They have 73% 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 M44 steel and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
470

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1590
1440
Melting Onset (Solidus), °C 1540
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 14
27
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 43
7.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 9.9
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 170
97

Common Calculations

PREN (Pitting Resistance) 35
12
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 75
17
Strength to Weight: Bending, points 24 to 46
17
Thermal Diffusivity, mm2/s 3.7
7.2
Thermal Shock Resistance, points 27 to 70
17

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.040
Chromium (Cr), % 4.0 to 4.8
10.5 to 12.5
Cobalt (Co), % 11 to 12.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 65.3 to 70.6
84.2 to 88.9
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 0 to 0.3
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.3 to 0.55
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.0 to 5.8
0
Vanadium (V), % 1.9 to 2.2
0