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SAE-AISI M42 Steel vs. SAE-AISI M52 Steel

Both SAE-AISI M42 steel and SAE-AISI M52 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M42 steel and the bottom bar is SAE-AISI M52 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
710 to 2280

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1540
1510
Melting Onset (Solidus), °C 1490
1470
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 20
31
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
12
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
7.5
Embodied Energy, MJ/kg 100
110
Embodied Water, L/kg 140
89

Common Calculations

PREN (Pitting Resistance) 38
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
25 to 80
Strength to Weight: Bending, points 24 to 48
22 to 49
Thermal Diffusivity, mm2/s 5.4
8.4
Thermal Shock Resistance, points 25 to 71
21 to 67

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.85 to 1.0
Chromium (Cr), % 3.5 to 4.3
3.5 to 4.3
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 76.3 to 81
84.4 to 88.9
Manganese (Mn), % 0.15 to 0.4
0.15 to 0.45
Molybdenum (Mo), % 9.0 to 10
4.0 to 4.9
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.65
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.2 to 1.9
0.75 to 1.5
Vanadium (V), % 1.0 to 1.4
1.7 to 2.3

Comparable Variants