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AISI 429 Stainless Steel vs. S31277 Stainless Steel

Both AISI 429 stainless steel and S31277 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 57% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 429 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, % 25
45
Fatigue Strength, MPa 180
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 300
600
Tensile Strength: Ultimate (UTS), MPa 480
860
Tensile Strength: Yield (Proof), MPa 260
410

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 400
430
Maximum Temperature: Mechanical, °C 810
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 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.0
6.7
Embodied Energy, MJ/kg 28
90
Embodied Water, L/kg 110
220

Common Calculations

PREN (Pitting Resistance) 15
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
320
Resilience: Unit (Modulus of Resilience), kJ/m3 170
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 18
25
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.020
Chromium (Cr), % 14 to 16
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 81.8 to 86
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), % 0
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