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SAE-AISI M43 Steel vs. EN 1.4945 Stainless Steel

Both SAE-AISI M43 steel and EN 1.4945 stainless steel are iron alloys. They have 69% 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 M43 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 810 to 2290
640 to 740

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1550
1490
Melting Onset (Solidus), °C 1500
1440
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 19
14
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 33
30
Density, g/cm3 8.2
8.1
Embodied Carbon, kg CO2/kg material 8.5
5.0
Embodied Energy, MJ/kg 120
73
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 35
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 77
22 to 25
Strength to Weight: Bending, points 24 to 47
20 to 22
Thermal Diffusivity, mm2/s 5.3
3.7
Thermal Shock Resistance, points 25 to 71
14 to 16

Alloy Composition

Carbon (C), % 1.2 to 1.3
0.040 to 0.1
Chromium (Cr), % 3.5 to 4.3
15.5 to 17.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.8 to 76
57.9 to 65.7
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
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 0.65
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 2.3 to 3.0
2.5 to 3.5
Vanadium (V), % 1.5 to 1.8
0