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EN 1.6956 Steel vs. EN 1.5663 Steel

Both EN 1.6956 steel and EN 1.5663 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.6956 steel and the bottom bar is EN 1.5663 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.6
20
Fatigue Strength, MPa 680
450
Impact Strength: V-Notched Charpy, J 25
120
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 730
470
Tensile Strength: Ultimate (UTS), MPa 1230
750
Tensile Strength: Yield (Proof), MPa 1120
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 8.0
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
7.5
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.2
2.3
Embodied Energy, MJ/kg 31
31
Embodied Water, L/kg 60
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 43
26
Strength to Weight: Bending, points 32
23
Thermal Shock Resistance, points 36
22

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.1
Chromium (Cr), % 1.0 to 1.7
0
Iron (Fe), % 92.4 to 95.3
88.6 to 91.2
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.8
Molybdenum (Mo), % 0.3 to 0.6
0 to 0.1
Nickel (Ni), % 2.9 to 3.8
8.5 to 10
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 0.4
0 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.0050
Vanadium (V), % 0.080 to 0.25
0 to 0.010