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EN 1.5682 Steel vs. EN 1.7720 Steel

Both EN 1.5682 steel and EN 1.7720 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a moderately high 91% of their average alloy composition in common. There are 29 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 EN 1.5682 steel and the bottom bar is EN 1.7720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
19
Fatigue Strength, MPa 400
230
Impact Strength: V-Notched Charpy, J 68
30
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 770
590
Tensile Strength: Yield (Proof), MPa 570
340

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 430
410
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.8
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
2.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.3
2.2
Embodied Energy, MJ/kg 31
30
Embodied Water, L/kg 63
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
97
Resilience: Unit (Modulus of Resilience), kJ/m3 870
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 23
20
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.13
0.1 to 0.15
Chromium (Cr), % 0
0.3 to 0.5
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 88.7 to 91.1
96.6 to 98.6
Manganese (Mn), % 0.3 to 0.8
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.1
0.4 to 0.6
Nickel (Ni), % 8.5 to 9.5
0 to 0.4
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.45
Sulfur (S), % 0 to 0.0050
0 to 0.020
Vanadium (V), % 0 to 0.050
0.22 to 0.3