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EN 1.0558 Cast Steel vs. R05255 Alloy

EN 1.0558 cast steel belongs to the iron alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN 1.0558 cast steel and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
70
Tensile Strength: Ultimate (UTS), MPa 640
540
Tensile Strength: Yield (Proof), MPa 340
450

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Specific Heat Capacity, J/kg-K 470
140
Thermal Conductivity, W/m-K 53
59
Thermal Expansion, µm/m-K 12
6.6

Otherwise Unclassified Properties

Density, g/cm3 7.9
17
Embodied Water, L/kg 45
630

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
100
Resilience: Unit (Modulus of Resilience), kJ/m3 300
530
Stiffness to Weight: Axial, points 13
6.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 22
9.1
Strength to Weight: Bending, points 21
8.9
Thermal Diffusivity, mm2/s 14
25
Thermal Shock Resistance, points 20
31

Alloy Composition

Carbon (C), % 0
0 to 0.010
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 99.935 to 100
0 to 0.010
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5