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EN 1.0258 Steel vs. EN 1.0566 Steel

Both EN 1.0258 steel and EN 1.0566 steel are iron alloys. Both are furnished in the normalized condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0258 steel and the bottom bar is EN 1.0566 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
24
Fatigue Strength, MPa 200
270
Impact Strength: V-Notched Charpy, J 38
79
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 310
350
Tensile Strength: Ultimate (UTS), MPa 490
550
Tensile Strength: Yield (Proof), MPa 290
370

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
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 49
50
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 19
22
Embodied Water, L/kg 47
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 16
17

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.024
Carbon (C), % 0 to 0.2
0 to 0.18
Chromium (Cr), % 0 to 0.3
0 to 0.3
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 96.9 to 100
96.2 to 98.9
Manganese (Mn), % 0 to 1.4
1.1 to 1.7
Molybdenum (Mo), % 0 to 0.080
0 to 0.080
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0 to 0.010
0 to 0.050
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.0080
Titanium (Ti), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0 to 0.020
0 to 0.1