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SAE-AISI P5 Steel vs. N08811 Stainless Steel

Both SAE-AISI P5 steel and N08811 stainless steel are iron alloys. They have 48% of their average alloy composition in common. 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 SAE-AISI P5 steel and the bottom bar is N08811 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
77
Tensile Strength: Ultimate (UTS), MPa 370 to 1980
510

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
12
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.5
5.3
Embodied Energy, MJ/kg 20
76
Embodied Water, L/kg 56
200

Common Calculations

PREN (Pitting Resistance) 2.3
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13 to 70
18
Strength to Weight: Bending, points 15 to 45
18
Thermal Diffusivity, mm2/s 12
3.0
Thermal Shock Resistance, points 12 to 65
13

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0 to 0.1
0.060 to 0.1
Chromium (Cr), % 2.0 to 2.5
19 to 23
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 95.7 to 97.8
39.5 to 50.6
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Nickel (Ni), % 0 to 0.35
30 to 35
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6