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EN 1.4869 Casting Alloy vs. SAE-AISI O7 Steel

EN 1.4869 casting alloy belongs to the nickel alloys classification, while SAE-AISI O7 steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4869 casting alloy and the bottom bar is SAE-AISI O7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 540
680 to 2110

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 10
41
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
6.0
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 7.7
2.3
Embodied Energy, MJ/kg 110
33
Embodied Water, L/kg 300
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
24 to 74
Strength to Weight: Bending, points 17
22 to 46
Thermal Diffusivity, mm2/s 2.6
11
Thermal Shock Resistance, points 14
23 to 70

Alloy Composition

Carbon (C), % 0.45 to 0.55
1.1 to 1.3
Chromium (Cr), % 24 to 26
0.35 to 0.85
Cobalt (Co), % 14 to 16
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 11.4 to 23.6
92.9 to 97.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 33 to 37
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 1.0 to 2.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 4.0 to 6.0
1.0 to 2.0
Vanadium (V), % 0
0 to 0.4