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ACI-ASTM CF20 Steel vs. SAE-AISI T1 Steel

Both ACI-ASTM CF20 steel and SAE-AISI T1 steel are iron alloys. They have 74% 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 CF20 steel and the bottom bar is SAE-AISI T1 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 77
80
Tensile Strength: Ultimate (UTS), MPa 530
770 to 2130

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Melting Completion (Liquidus), °C 1420
1810
Melting Onset (Solidus), °C 1410
1750
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 16
20
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 16
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 3.1
8.2
Embodied Energy, MJ/kg 44
130
Embodied Water, L/kg 150
90

Common Calculations

PREN (Pitting Resistance) 20
34
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 19
23 to 64
Strength to Weight: Bending, points 19
20 to 40
Thermal Diffusivity, mm2/s 4.3
5.2
Thermal Shock Resistance, points 11
23 to 64

Alloy Composition

Carbon (C), % 0 to 0.2
0.65 to 0.8
Chromium (Cr), % 18 to 21
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 64.2 to 74
73.2 to 77.2
Manganese (Mn), % 0 to 1.5
0.1 to 0.4
Nickel (Ni), % 8.0 to 11
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
17.3 to 18.8
Vanadium (V), % 0
0.9 to 1.3