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SAE-AISI M41 Steel vs. EN 1.4945 Stainless Steel

Both SAE-AISI M41 steel and EN 1.4945 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M41 steel and the bottom bar is EN 1.4945 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 800 to 2290
640 to 740

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1600
1490
Melting Onset (Solidus), °C 1550
1440
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 22
14
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 33
30
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 9.1
5.0
Embodied Energy, MJ/kg 140
73
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 28
23
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 76
22 to 25
Strength to Weight: Bending, points 23 to 46
20 to 22
Thermal Diffusivity, mm2/s 6.0
3.7
Thermal Shock Resistance, points 25 to 71
14 to 16

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.040 to 0.1
Chromium (Cr), % 3.8 to 4.5
15.5 to 17.5
Cobalt (Co), % 4.8 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.4 to 78.9
57.9 to 65.7
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Molybdenum (Mo), % 3.3 to 4.3
0
Nickel (Ni), % 0 to 0.3
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.15 to 0.5
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 6.3 to 7.0
2.5 to 3.5
Vanadium (V), % 1.8 to 2.3
0