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EN 1.8503 Steel vs. SAE-AISI P20 Steel

Both EN 1.8503 steel and SAE-AISI P20 steel are iron alloys. Their average alloy composition is basically identical. There are 24 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 1.8503 steel and the bottom bar is SAE-AISI P20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 1000
540 to 1050

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
45
Thermal Expansion, µm/m-K 13
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
2.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.6
Embodied Energy, MJ/kg 33
21
Embodied Water, L/kg 57
52

Common Calculations

PREN (Pitting Resistance) 3.7
2.6
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 35
19 to 37
Strength to Weight: Bending, points 28
19 to 29
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 29
18 to 35

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0.16 to 0.24
0.28 to 0.4
Chromium (Cr), % 1.2 to 1.5
0.4 to 2.0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 95.8 to 97.5
95.2 to 98.5
Manganese (Mn), % 0.4 to 0.8
0.35 to 0.71
Molybdenum (Mo), % 0.65 to 0.8
0.3 to 0.55
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
0.2 to 0.8
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.25 to 0.35
0