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SAE-AISI T8 Steel vs. EN 1.3551 Steel

Both SAE-AISI T8 steel and EN 1.3551 steel are iron alloys. They have 80% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (4, 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 1.3551 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
75
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
720

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1730
1490
Melting Onset (Solidus), °C 1670
1450
Specific Heat Capacity, J/kg-K 420
460
Thermal Conductivity, W/m-K 18
36
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
9.0
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 10
4.9
Embodied Energy, MJ/kg 160
71
Embodied Water, L/kg 120
82

Common Calculations

PREN (Pitting Resistance) 30
18
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
26
Strength to Weight: Bending, points 21 to 41
23
Thermal Diffusivity, mm2/s 4.8
9.8
Thermal Shock Resistance, points 24 to 66
21

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.77 to 0.85
Chromium (Cr), % 3.8 to 4.5
3.9 to 4.3
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 69.3 to 75.4
88.8 to 91.1
Manganese (Mn), % 0.2 to 0.4
0.15 to 0.35
Molybdenum (Mo), % 0.4 to 1.0
4.0 to 4.5
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 0.015
Tungsten (W), % 13.3 to 14.8
0 to 0.25
Vanadium (V), % 1.8 to 2.4
0.9 to 1.1