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AISI 431 Stainless Steel vs. SAE-AISI S5 Steel

Both AISI 431 stainless steel and SAE-AISI S5 steel are iron alloys. They have 82% 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 AISI 431 stainless steel and the bottom bar is SAE-AISI S5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
680 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1510
1440
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
42
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
3.1
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.1
Embodied Energy, MJ/kg 31
29
Embodied Water, L/kg 120
51

Common Calculations

PREN (Pitting Resistance) 16
2.9
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 50
25 to 70
Strength to Weight: Bending, points 27 to 36
22 to 45
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 28 to 43
23 to 65

Alloy Composition

Carbon (C), % 0 to 0.2
0.5 to 0.65
Chromium (Cr), % 15 to 17
0 to 0.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 78.2 to 83.8
93.6 to 97
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 0
0.2 to 1.4
Nickel (Ni), % 1.3 to 2.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
1.8 to 2.3
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 0.35

Comparable Variants