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SAE-AISI P20 Steel vs. EN 1.4869 Casting Alloy

SAE-AISI P20 steel belongs to the iron alloys classification, while EN 1.4869 casting alloy belongs to the nickel alloys. They have a modest 20% 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 SAE-AISI P20 steel and the bottom bar is EN 1.4869 casting alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 540 to 1050
540

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 45
10
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
70
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.6
7.7
Embodied Energy, MJ/kg 21
110
Embodied Water, L/kg 52
300

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 19 to 37
18
Strength to Weight: Bending, points 19 to 29
17
Thermal Diffusivity, mm2/s 12
2.6
Thermal Shock Resistance, points 18 to 35
14

Alloy Composition

Carbon (C), % 0.28 to 0.4
0.45 to 0.55
Chromium (Cr), % 0.4 to 2.0
24 to 26
Cobalt (Co), % 0
14 to 16
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95.2 to 98.5
11.4 to 23.6
Manganese (Mn), % 0.35 to 0.71
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.8
1.0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
4.0 to 6.0