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ACI-ASTM CB7Cu-1 Steel vs. SAE-AISI M41 Steel

Both ACI-ASTM CB7Cu-1 steel and SAE-AISI M41 steel are iron alloys. They have 81% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-1 steel and the bottom bar is SAE-AISI M41 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
800 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1430
1600
Melting Onset (Solidus), °C 1500
1550
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 17
22
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
33
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.6
9.1
Embodied Energy, MJ/kg 38
140
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 17
28
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
26 to 76
Strength to Weight: Bending, points 28 to 35
23 to 46
Thermal Diffusivity, mm2/s 4.6
6.0
Thermal Shock Resistance, points 32 to 45
25 to 71

Alloy Composition

Carbon (C), % 0 to 0.070
1.1 to 1.2
Chromium (Cr), % 15.5 to 17.7
3.8 to 4.5
Cobalt (Co), % 0
4.8 to 5.8
Copper (Cu), % 2.5 to 3.2
0 to 0.25
Iron (Fe), % 72.3 to 78.4
73.4 to 78.9
Manganese (Mn), % 0 to 0.7
0.2 to 0.6
Molybdenum (Mo), % 0
3.3 to 4.3
Nickel (Ni), % 3.6 to 4.6
0 to 0.3
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
6.3 to 7.0
Vanadium (V), % 0
1.8 to 2.3