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EN 1.3963 Alloy vs. EN 1.8550 Steel

Both EN 1.3963 alloy and EN 1.8550 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 65% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.3963 alloy and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 29
11
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 290
600
Tensile Strength: Ultimate (UTS), MPa 440
1000
Tensile Strength: Yield (Proof), MPa 310
760

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 1.6
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
3.4
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.7
Embodied Energy, MJ/kg 66
23
Embodied Water, L/kg 110
67

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
36
Strength to Weight: Bending, points 16
29
Thermal Shock Resistance, points 110
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.050
0.3 to 0.37
Chromium (Cr), % 0 to 0.25
1.5 to 1.8
Iron (Fe), % 60.5 to 64.9
94.4 to 96.3
Manganese (Mn), % 0 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 0 to 1.0
0.15 to 0.25
Nickel (Ni), % 35 to 37
0.85 to 1.2
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0.1 to 0.2
0 to 0.035