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EN 1.5662 Steel vs. EN 1.7725 Steel

Both EN 1.5662 steel and EN 1.7725 steel are iron alloys. 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 (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.5662 steel and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
14
Fatigue Strength, MPa 380 to 450
390 to 550
Impact Strength: V-Notched Charpy, J 91 to 130
34 to 35
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 740 to 750
830 to 1000
Tensile Strength: Yield (Proof), MPa 550 to 660
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.8
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
2.9
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.8
Embodied Energy, MJ/kg 31
24
Embodied Water, L/kg 63
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1150
980 to 1940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
29 to 35
Strength to Weight: Bending, points 23
25 to 28
Thermal Shock Resistance, points 22
24 to 29

Alloy Composition

Carbon (C), % 0 to 0.1
0.27 to 0.34
Chromium (Cr), % 0
1.3 to 1.7
Iron (Fe), % 88.6 to 91.2
95.7 to 97.5
Manganese (Mn), % 0.3 to 0.8
0.6 to 1.0
Molybdenum (Mo), % 0 to 0.1
0.3 to 0.5
Nickel (Ni), % 8.5 to 10
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.0050
0 to 0.030
Vanadium (V), % 0 to 0.050
0.050 to 0.15