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SAE-AISI M41 Steel vs. ACI-ASTM CH20 Steel

Both SAE-AISI M41 steel and ACI-ASTM CH20 steel are iron alloys. They have 66% 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 M41 steel and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 800 to 2290
610

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1600
1410
Melting Onset (Solidus), °C 1550
1430
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 22
14
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 33
20
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 9.1
3.7
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 28
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 76
22
Strength to Weight: Bending, points 23 to 46
21
Thermal Diffusivity, mm2/s 6.0
3.7
Thermal Shock Resistance, points 25 to 71
15

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.2
Chromium (Cr), % 3.8 to 4.5
22 to 26
Cobalt (Co), % 4.8 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.4 to 78.9
54.7 to 66
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Molybdenum (Mo), % 3.3 to 4.3
0 to 0.5
Nickel (Ni), % 0 to 0.3
12 to 15
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 6.3 to 7.0
0
Vanadium (V), % 1.8 to 2.3
0