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AISI 304 Stainless Steel vs. S31277 Stainless Steel

Both AISI 304 stainless steel and S31277 stainless steel are iron alloys. They have 70% 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 AISI 304 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, % 8.0 to 43
45
Fatigue Strength, MPa 210 to 440
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 400 to 690
600
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
860
Tensile Strength: Yield (Proof), MPa 230 to 860
410

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.0
6.7
Embodied Energy, MJ/kg 43
90
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 20
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
320
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 42
29
Strength to Weight: Bending, points 20 to 32
25
Thermal Shock Resistance, points 12 to 25
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 18 to 20
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 66.5 to 74
35.5 to 46.2
Manganese (Mn), % 0 to 2.0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 8.0 to 10.5
26 to 28
Nitrogen (N), % 0 to 0.1
0.3 to 0.4
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010