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S17700 Stainless Steel vs. S31277 Stainless Steel

Both S17700 stainless steel and S31277 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S17700 stainless steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 1.0 to 23
45
Fatigue Strength, MPa 290 to 560
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Shear Strength, MPa 740 to 940
600
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
860
Tensile Strength: Yield (Proof), MPa 430 to 1210
410

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.8
6.7
Embodied Energy, MJ/kg 40
90
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 17
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
320
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
410
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
25
Thermal Shock Resistance, points 39 to 54
19

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.020
Chromium (Cr), % 16 to 18
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 70.5 to 76.8
35.5 to 46.2
Manganese (Mn), % 0 to 1.0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 6.5 to 7.8
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010