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EN 1.8523 Steel vs. EN 1.6579 Steel

Both EN 1.8523 steel and EN 1.6579 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 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 1.8523 steel and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15
11 to 14
Fatigue Strength, MPa 530
380 to 570
Impact Strength: V-Notched Charpy, J 36
35 to 41
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 1000
850 to 980
Tensile Strength: Yield (Proof), MPa 800
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 480
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
3.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.7
Embodied Energy, MJ/kg 31
22
Embodied Water, L/kg 64
56

Common Calculations

PREN (Pitting Resistance) 6.4
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 1700
950 to 2210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
30 to 35
Strength to Weight: Bending, points 28
25 to 28
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 29
25 to 29

Alloy Composition

Carbon (C), % 0.35 to 0.45
0.32 to 0.38
Chromium (Cr), % 3.0 to 3.5
1.4 to 1.7
Iron (Fe), % 93.5 to 95.7
94.2 to 96.1
Manganese (Mn), % 0.4 to 0.7
0.6 to 1.0
Molybdenum (Mo), % 0.8 to 1.1
0.15 to 0.35
Nickel (Ni), % 0
1.4 to 1.7
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.15 to 0.25
0