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SAE-AISI T8 Steel vs. ASTM A182 Grade F12 Class 1

Both SAE-AISI T8 steel and ASTM A182 grade F12 class 1 are iron alloys. They have 75% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is ASTM A182 grade F12 class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
470

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1730
1470
Melting Onset (Solidus), °C 1670
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 18
45
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.8
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 10
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 120
52

Common Calculations

PREN (Pitting Resistance) 30
2.8
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
17
Strength to Weight: Bending, points 21 to 41
17
Thermal Diffusivity, mm2/s 4.8
12
Thermal Shock Resistance, points 24 to 66
14

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.050 to 0.15
Chromium (Cr), % 3.8 to 4.5
0.8 to 1.3
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
96.8 to 98.4
Manganese (Mn), % 0.2 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 0.4 to 1.0
0.44 to 0.65
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.045
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0