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SAE-AISI T8 Steel vs. EN 1.8509 Steel

Both SAE-AISI T8 steel and EN 1.8509 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 (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 EN 1.8509 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
73
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
1130

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1730
1450
Melting Onset (Solidus), °C 1670
1410
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 18
39
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.8
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
1.6
Embodied Energy, MJ/kg 160
22
Embodied Water, L/kg 120
65

Common Calculations

PREN (Pitting Resistance) 30
2.6
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
40
Strength to Weight: Bending, points 21 to 41
31
Thermal Diffusivity, mm2/s 4.8
10
Thermal Shock Resistance, points 24 to 66
33

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.75 to 0.85
0.38 to 0.45
Chromium (Cr), % 3.8 to 4.5
1.5 to 1.8
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
95.5 to 97.1
Manganese (Mn), % 0.2 to 0.4
0.4 to 0.7
Molybdenum (Mo), % 0.4 to 1.0
0.2 to 0.35
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0