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SAE-AISI F1 Steel vs. SAE-AISI T8 Steel

Both SAE-AISI F1 steel and SAE-AISI T8 steel 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 (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI F1 steel and the bottom bar is SAE-AISI T8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
78
Tensile Strength: Ultimate (UTS), MPa 620 to 2320
780 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1480
1730
Melting Onset (Solidus), °C 1430
1670
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 45
18
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
45
Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 1.7
10
Embodied Energy, MJ/kg 24
160
Embodied Water, L/kg 46
120

Common Calculations

PREN (Pitting Resistance) 2.3
30
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 22 to 82
24 to 66
Strength to Weight: Bending, points 20 to 49
21 to 41
Thermal Diffusivity, mm2/s 12
4.8
Thermal Shock Resistance, points 19 to 70
24 to 66

Alloy Composition

Carbon (C), % 1.0 to 1.3
0.75 to 0.85
Chromium (Cr), % 0
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 95.9 to 98
69.3 to 75.4
Manganese (Mn), % 0 to 0.5
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.1 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.0 to 1.8
13.3 to 14.8
Vanadium (V), % 0
1.8 to 2.4

Comparable Variants