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EN 1.3963 Alloy vs. EN 1.7720 Steel

Both EN 1.3963 alloy and EN 1.7720 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 64% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 1.7720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 29
19
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 440
590
Tensile Strength: Yield (Proof), MPa 310
340

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 1.6
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.8
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 4.8
2.2
Embodied Energy, MJ/kg 66
30
Embodied Water, L/kg 110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
97
Resilience: Unit (Modulus of Resilience), kJ/m3 260
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
21
Strength to Weight: Bending, points 16
20
Thermal Shock Resistance, points 110
17

Alloy Composition

Carbon (C), % 0 to 0.050
0.1 to 0.15
Chromium (Cr), % 0 to 0.25
0.3 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 60.5 to 64.9
96.6 to 98.6
Manganese (Mn), % 0 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 0 to 1.0
0.4 to 0.6
Nickel (Ni), % 35 to 37
0 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.45
Sulfur (S), % 0.1 to 0.2
0 to 0.020
Vanadium (V), % 0
0.22 to 0.3