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SAE-AISI P20 Steel vs. SAE-AISI P5 Steel

Both SAE-AISI P20 steel and SAE-AISI P5 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI P20 steel and the bottom bar is SAE-AISI P5 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 540 to 1050
370 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
45
Thermal Expansion, µm/m-K 12
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 2.8
2.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
20
Embodied Water, L/kg 52
56

Common Calculations

PREN (Pitting Resistance) 2.6
2.3
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 37
13 to 70
Strength to Weight: Bending, points 19 to 29
15 to 45
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 18 to 35
12 to 65

Alloy Composition

Carbon (C), % 0.28 to 0.4
0 to 0.1
Chromium (Cr), % 0.4 to 2.0
2.0 to 2.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 95.2 to 98.5
95.7 to 97.8
Manganese (Mn), % 0.35 to 0.71
0.2 to 0.6
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0
0 to 0.35
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants