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SAE-AISI M42 Steel vs. EN 1.5805 Steel

Both SAE-AISI M42 steel and EN 1.5805 steel are iron alloys. They have 81% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (5, 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 1.5805 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
73
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
460 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1490
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 20
40
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
3.1
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
1.6
Embodied Energy, MJ/kg 100
21
Embodied Water, L/kg 140
53

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
16 to 42
Strength to Weight: Bending, points 24 to 48
17 to 32
Thermal Diffusivity, mm2/s 5.4
11
Thermal Shock Resistance, points 25 to 71
13 to 35

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.070 to 0.12
Chromium (Cr), % 3.5 to 4.3
0.9 to 1.2
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 76.3 to 81
95.7 to 97.2
Manganese (Mn), % 0.15 to 0.4
0.6 to 0.9
Molybdenum (Mo), % 9.0 to 10
0
Nickel (Ni), % 0 to 0.3
1.2 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.15 to 0.65
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0

Comparable Variants