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EN 1.6957 Steel vs. EN 1.8523 Steel

Both EN 1.6957 steel and EN 1.8523 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 96% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6957 steel and the bottom bar is EN 1.8523 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
15
Fatigue Strength, MPa 530
530
Impact Strength: V-Notched Charpy, J 71
36
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 570
610
Tensile Strength: Ultimate (UTS), MPa 930
1000
Tensile Strength: Yield (Proof), MPa 780
800

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
480
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
4.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.1
2.2
Embodied Energy, MJ/kg 29
31
Embodied Water, L/kg 60
64

Common Calculations

PREN (Pitting Resistance) 2.7
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1630
1700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
36
Strength to Weight: Bending, points 27
28
Thermal Diffusivity, mm2/s 13
10
Thermal Shock Resistance, points 27
29

Alloy Composition

Carbon (C), % 0.22 to 0.32
0.35 to 0.45
Chromium (Cr), % 1.2 to 1.8
3.0 to 3.5
Iron (Fe), % 92.7 to 94.7
93.5 to 95.7
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.7
Molybdenum (Mo), % 0.25 to 0.45
0.8 to 1.1
Nickel (Ni), % 3.4 to 4.0
0
Phosphorus (P), % 0 to 0.010
0 to 0.035
Silicon (Si), % 0 to 0.15
0 to 0.4
Sulfur (S), % 0 to 0.0070
0 to 0.035
Vanadium (V), % 0.050 to 0.15
0.15 to 0.25