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EN 1.6958 Steel vs. EN 1.5662 Steel

Both EN 1.6958 steel and EN 1.5662 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 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 1.6958 steel and the bottom bar is EN 1.5662 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
20
Fatigue Strength, MPa 700
380 to 450
Impact Strength: V-Notched Charpy, J 63
91 to 130
Poisson's Ratio 0.29
0.29
Reduction in Area, % 56
56 to 57
Shear Modulus, GPa 73
73
Shear Strength, MPa 700
460 to 470
Tensile Strength: Ultimate (UTS), MPa 1140
740 to 750
Tensile Strength: Yield (Proof), MPa 1070
550 to 660

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 450
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 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
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 2.0
2.3
Embodied Energy, MJ/kg 27
31
Embodied Water, L/kg 60
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
810 to 1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
26
Strength to Weight: Bending, points 31
23
Thermal Shock Resistance, points 39
22

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.1
Chromium (Cr), % 1.2 to 1.7
0
Iron (Fe), % 92.6 to 94.5
88.6 to 91.2
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.8
Molybdenum (Mo), % 0.35 to 0.55
0 to 0.1
Nickel (Ni), % 3.3 to 3.8
8.5 to 10
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.15 to 0.3
0 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.0050
Vanadium (V), % 0 to 0.12
0 to 0.050