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ACI-ASTM CG12 Steel vs. SAE-AISI T2 Steel

Both ACI-ASTM CG12 steel and SAE-AISI T2 steel are iron alloys. They have 70% 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 ACI-ASTM CG12 steel and the bottom bar is SAE-AISI T2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 550
780 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1410
1820
Melting Onset (Solidus), °C 1370
1760
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 15
19
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
46
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 3.3
11
Embodied Energy, MJ/kg 48
170
Embodied Water, L/kg 160
98

Common Calculations

PREN (Pitting Resistance) 22
36
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 20
23 to 64
Strength to Weight: Bending, points 19
20 to 40
Thermal Diffusivity, mm2/s 4.0
4.9
Thermal Shock Resistance, points 12
23 to 65

Alloy Composition

Carbon (C), % 0 to 0.12
0.8 to 0.9
Chromium (Cr), % 20 to 23
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 60.3 to 70
70.8 to 75.8
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 10 to 13
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4