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SAE-AISI T8 Steel vs. EN 1.7117 Steel

Both SAE-AISI T8 steel and EN 1.7117 steel are iron alloys. They have 75% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is EN 1.7117 steel.

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
72
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
660 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1730
1440
Melting Onset (Solidus), °C 1670
1400
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 18
43
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.6
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 10
1.5
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 120
51

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
24 to 69
Strength to Weight: Bending, points 21 to 41
22 to 44
Thermal Diffusivity, mm2/s 4.8
12
Thermal Shock Resistance, points 24 to 66
20 to 58

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.49 to 0.56
Chromium (Cr), % 3.8 to 4.5
0.7 to 1.0
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
95.2 to 96.4
Manganese (Mn), % 0.2 to 0.4
0.7 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0.5 to 0.7
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
1.2 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0

Comparable Variants