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ACI-ASTM CG3M Steel vs. SAE-AISI P2 Steel

Both ACI-ASTM CG3M steel and SAE-AISI P2 steel are iron alloys. They have 67% of their average alloy composition in common. There are 23 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 CG3M steel and the bottom bar is SAE-AISI P2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 580
330 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
2.7
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.1
1.5
Embodied Energy, MJ/kg 56
20
Embodied Water, L/kg 160
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
12 to 70
Strength to Weight: Bending, points 20
14 to 45
Thermal Diffusivity, mm2/s 4.1
12
Thermal Shock Resistance, points 13
11 to 65

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 18 to 21
0.75 to 1.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 58.9 to 70
96.6 to 98.8
Manganese (Mn), % 0 to 1.5
0.1 to 0.4
Molybdenum (Mo), % 3.0 to 4.0
0.15 to 0.4
Nickel (Ni), % 9.0 to 13
0.1 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0.1 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030