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EN 1.3963 Alloy vs. SAE-AISI 8740 Steel

Both EN 1.3963 alloy and SAE-AISI 8740 steel are iron alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3963 alloy and the bottom bar is SAE-AISI 8740 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 29
11 to 23
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 290
370 to 400
Tensile Strength: Ultimate (UTS), MPa 440
580 to 670
Tensile Strength: Yield (Proof), MPa 310
380 to 570

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 1.6
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.6
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.5
Embodied Energy, MJ/kg 66
20
Embodied Water, L/kg 110
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
390 to 850
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
20 to 24
Strength to Weight: Bending, points 16
20 to 22
Thermal Shock Resistance, points 110
17 to 20

Alloy Composition

Carbon (C), % 0 to 0.050
0.38 to 0.43
Chromium (Cr), % 0 to 0.25
0.4 to 0.6
Iron (Fe), % 60.5 to 64.9
96.5 to 97.7
Manganese (Mn), % 0 to 0.5
0.75 to 1.0
Molybdenum (Mo), % 0 to 1.0
0.2 to 0.3
Nickel (Ni), % 35 to 37
0.4 to 0.7
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0.1 to 0.2
0 to 0.040