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EN 1.7725 Steel vs. EN 1.5662 Steel

Both EN 1.7725 steel and EN 1.5662 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 1.7725 steel and the bottom bar is EN 1.5662 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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