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SAE-AISI M42 Steel vs. AISI 205 Stainless Steel

Both SAE-AISI M42 steel and AISI 205 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 20 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 M42 steel and the bottom bar is AISI 205 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
77
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
800 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1540
1380
Melting Onset (Solidus), °C 1490
1340
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
18

Otherwise Unclassified Properties

Base Metal Price, % relative 30
11
Density, g/cm3 8.2
7.6
Embodied Carbon, kg CO2/kg material 7.4
2.6
Embodied Energy, MJ/kg 100
37
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 38
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 28 to 79
29 to 52
Strength to Weight: Bending, points 24 to 48
25 to 37
Thermal Shock Resistance, points 25 to 71
16 to 29

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.12 to 0.25
Chromium (Cr), % 3.5 to 4.3
16.5 to 18.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.3 to 81
62.6 to 68.1
Manganese (Mn), % 0.15 to 0.4
14 to 15.5
Molybdenum (Mo), % 9.0 to 10
0
Nickel (Ni), % 0 to 0.3
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0.15 to 0.65
0 to 1.0
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

Comparable Variants