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S17700 Stainless Steel vs. S31266 Stainless Steel

Both S17700 stainless steel and S31266 stainless steel are iron alloys. They have 65% 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 S17700 stainless steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 1.0 to 23
40
Fatigue Strength, MPa 290 to 560
400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
81
Shear Strength, MPa 740 to 940
590
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
860
Tensile Strength: Yield (Proof), MPa 430 to 1210
470

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
37
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 2.8
6.5
Embodied Energy, MJ/kg 40
89
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 17
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
290
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 42 to 59
29
Strength to Weight: Bending, points 32 to 40
24
Thermal Diffusivity, mm2/s 4.1
3.1
Thermal Shock Resistance, points 39 to 54
18

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.030
Chromium (Cr), % 16 to 18
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 70.5 to 76.8
34.1 to 46
Manganese (Mn), % 0 to 1.0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 6.5 to 7.8
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5