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S31266 Stainless Steel vs. AISI 431 Stainless Steel

Both S31266 stainless steel and AISI 431 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S31266 stainless steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
15 to 17
Fatigue Strength, MPa 400
430 to 610
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 590
550 to 840
Tensile Strength: Ultimate (UTS), MPa 860
890 to 1380
Tensile Strength: Yield (Proof), MPa 470
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
400
Maximum Temperature: Mechanical, °C 1100
850
Melting Completion (Liquidus), °C 1470
1510
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.0
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 6.5
2.2
Embodied Energy, MJ/kg 89
31
Embodied Water, L/kg 220
120

Common Calculations

PREN (Pitting Resistance) 54
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 540
1270 to 2770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
32 to 50
Strength to Weight: Bending, points 24
27 to 36
Thermal Diffusivity, mm2/s 3.1
7.0
Thermal Shock Resistance, points 18
28 to 43

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 23 to 25
15 to 17
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 34.1 to 46
78.2 to 83.8
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 5.2 to 6.2
0
Nickel (Ni), % 21 to 24
1.3 to 2.5
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 2.5
0