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SAE-AISI M42 Steel vs. EN 1.4594 Stainless Steel

Both SAE-AISI M42 steel and EN 1.4594 stainless steel are iron alloys. They have 83% 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 M42 steel and the bottom bar is EN 1.4594 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 78
76
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
1020 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1540
1450
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 20
16
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 30
15
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
3.2
Embodied Energy, MJ/kg 100
45
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 38
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
36 to 41
Strength to Weight: Bending, points 24 to 48
29 to 31
Thermal Diffusivity, mm2/s 5.4
4.4
Thermal Shock Resistance, points 25 to 71
34 to 39

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.070
Chromium (Cr), % 3.5 to 4.3
13 to 15
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
1.2 to 2.0
Iron (Fe), % 76.3 to 81
72.6 to 79.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 9.0 to 10
1.2 to 2.0
Nickel (Ni), % 0 to 0.3
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.65
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0