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SAE-AISI M1 Steel vs. ACI-ASTM CA40F Steel

Both SAE-AISI M1 steel and ACI-ASTM CA40F steel are iron alloys. They have 88% 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 M1 steel and the bottom bar is ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 730 to 2140
770

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1560
1430
Melting Onset (Solidus), °C 1510
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 29
27
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 18
7.5
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 7.0
2.0
Embodied Energy, MJ/kg 99
28
Embodied Water, L/kg 98
100

Common Calculations

PREN (Pitting Resistance) 35
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 73
28
Strength to Weight: Bending, points 22 to 45
24
Thermal Diffusivity, mm2/s 8.0
7.2
Thermal Shock Resistance, points 23 to 66
28

Alloy Composition

Carbon (C), % 0.78 to 0.88
0.2 to 0.4
Chromium (Cr), % 3.5 to 4.0
11.5 to 14
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81 to 84.8
81.6 to 88.3
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 8.2 to 9.2
0 to 0.5
Nickel (Ni), % 0 to 0.3
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.030
0.2 to 0.4
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.0 to 1.4
0