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SAE-AISI M42 Steel vs. EN 1.4807 Stainless Steel

Both SAE-AISI M42 steel and EN 1.4807 stainless steel are iron alloys. They have 47% 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 1.4807 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
480

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1540
1390
Melting Onset (Solidus), °C 1490
1350
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 20
12
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 30
39
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 7.4
6.8
Embodied Energy, MJ/kg 100
97
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 38
19
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
17
Strength to Weight: Bending, points 24 to 48
17
Thermal Diffusivity, mm2/s 5.4
3.2
Thermal Shock Resistance, points 25 to 71
12

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.3 to 0.5
Chromium (Cr), % 3.5 to 4.3
17 to 20
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.3 to 81
36.6 to 46.7
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 9.0 to 10
0 to 0.5
Nickel (Ni), % 0 to 0.3
34 to 36
Niobium (Nb), % 0
1.0 to 1.8
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.65
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0