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EN 1.6958 Steel vs. EN 1.8522 Steel

Both EN 1.6958 steel and EN 1.8522 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 1.8522 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
220 to 380
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 1140
730 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
470
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 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
4.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.2
Embodied Energy, MJ/kg 27
31
Embodied Water, L/kg 60
63

Common Calculations

PREN (Pitting Resistance) 2.9
6.2
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
26 to 44
Strength to Weight: Bending, points 31
23 to 33
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 39
21 to 36

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0.29 to 0.36
Chromium (Cr), % 1.2 to 1.7
2.8 to 3.3
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 92.6 to 94.5
93.7 to 96
Manganese (Mn), % 0.2 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 0.35 to 0.55
0.7 to 1.2
Nickel (Ni), % 3.3 to 3.8
0 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.15 to 0.3
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035
Vanadium (V), % 0 to 0.12
0.15 to 0.25