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SAE-AISI P5 Steel vs. AISI 314 Stainless Steel

Both SAE-AISI P5 steel and AISI 314 stainless steel are iron alloys. They have 55% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P5 steel and the bottom bar is AISI 314 stainless steel.

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
78
Tensile Strength: Ultimate (UTS), MPa 370 to 1980
590

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 45
15
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
4.3
Embodied Energy, MJ/kg 20
62
Embodied Water, L/kg 56
190

Common Calculations

PREN (Pitting Resistance) 2.3
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 70
21
Strength to Weight: Bending, points 15 to 45
20
Thermal Diffusivity, mm2/s 12
3.9
Thermal Shock Resistance, points 12 to 65
14

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.25
Chromium (Cr), % 2.0 to 2.5
23 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95.7 to 97.8
46.7 to 56.5
Manganese (Mn), % 0.2 to 0.6
0 to 2.0
Nickel (Ni), % 0 to 0.35
19 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.4
1.5 to 3.0
Sulfur (S), % 0 to 0.030
0 to 0.030