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EN 1.0591 Cast Steel vs. EN 1.0558 Cast Steel

Both EN 1.0591 cast steel and EN 1.0558 cast steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0591 cast steel and the bottom bar is EN 1.0558 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
18
Fatigue Strength, MPa 240
230
Impact Strength: V-Notched Charpy, J 29
33
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 620
640
Tensile Strength: Yield (Proof), MPa 360
340

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
53
Thermal Expansion, µm/m-K 12
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.7
1.7
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 45
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
99
Resilience: Unit (Modulus of Resilience), kJ/m3 340
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 20
20

Alloy Composition

Iron (Fe), % 99.935 to 100
99.935 to 100
Phosphorus (P), % 0 to 0.035
0 to 0.035
Sulfur (S), % 0 to 0.030
0 to 0.030