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SAE-AISI P20 Steel vs. AWS E320

Both SAE-AISI P20 steel and AWS E320 are iron alloys. They have 40% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P20 steel and the bottom bar is AWS E320.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 540 to 1050
620

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
38
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.6
6.5
Embodied Energy, MJ/kg 21
91
Embodied Water, L/kg 52
220

Common Calculations

PREN (Pitting Resistance) 2.6
28
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 37
21
Strength to Weight: Bending, points 19 to 29
20
Thermal Shock Resistance, points 18 to 35
16

Alloy Composition

Carbon (C), % 0.28 to 0.4
0 to 0.070
Chromium (Cr), % 0.4 to 2.0
19 to 21
Copper (Cu), % 0 to 0.25
3.0 to 4.0
Iron (Fe), % 95.2 to 98.5
31.8 to 43.5
Manganese (Mn), % 0.35 to 0.71
0.5 to 2.5
Molybdenum (Mo), % 0.3 to 0.55
2.0 to 3.0
Nickel (Ni), % 0
32 to 36
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.8
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030