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S31266 Stainless Steel vs. SAE-AISI P4 Steel

Both S31266 stainless steel and SAE-AISI P4 steel are iron alloys. They have 46% 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 S31266 stainless steel and the bottom bar is SAE-AISI P4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 860
390 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
4.4
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 6.5
1.8
Embodied Energy, MJ/kg 89
23
Embodied Water, L/kg 220
68

Common Calculations

PREN (Pitting Resistance) 54
7.0
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
14 to 70
Strength to Weight: Bending, points 24
15 to 45
Thermal Diffusivity, mm2/s 3.1
11
Thermal Shock Resistance, points 18
13 to 64

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 23 to 25
4.0 to 5.3
Copper (Cu), % 1.0 to 2.5
0 to 0.25
Iron (Fe), % 34.1 to 46
92.3 to 95.3
Manganese (Mn), % 2.0 to 4.0
0.2 to 0.6
Molybdenum (Mo), % 5.2 to 6.2
0.4 to 1.0
Nickel (Ni), % 21 to 24
0
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
0.1 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 2.5
0