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SAE-AISI M62 Steel vs. ACI-ASTM CN7M Steel

Both SAE-AISI M62 steel and ACI-ASTM CN7M steel are iron alloys. They have 50% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M62 steel and the bottom bar is ACI-ASTM CN7M 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 79
77
Tensile Strength: Ultimate (UTS), MPa 830 to 2440
480

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1650
1410
Melting Onset (Solidus), °C 1600
1450
Specific Heat Capacity, J/kg-K 430
470
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 30
32
Density, g/cm3 8.5
8.1
Embodied Carbon, kg CO2/kg material 10
5.6
Embodied Energy, MJ/kg 150
78
Embodied Water, L/kg 110
210

Common Calculations

PREN (Pitting Resistance) 49
29
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 27 to 80
17
Strength to Weight: Bending, points 23 to 47
17
Thermal Shock Resistance, points 24 to 71
12

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.070
Chromium (Cr), % 3.5 to 4.0
19 to 22
Copper (Cu), % 0 to 0.25
3.0 to 4.0
Iron (Fe), % 73.6 to 77.4
37.4 to 48.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 10 to 11
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
27.5 to 30.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 5.8 to 6.5
0
Vanadium (V), % 1.8 to 2.1
0