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S31277 Stainless Steel vs. EN 1.4634 Stainless Steel

Both S31277 stainless steel and EN 1.4634 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 60% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
21
Fatigue Strength, MPa 380
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 600
340
Tensile Strength: Ultimate (UTS), MPa 860
540
Tensile Strength: Yield (Proof), MPa 410
280

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
500
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.7
2.9
Embodied Energy, MJ/kg 90
42
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 51
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
93
Resilience: Unit (Modulus of Resilience), kJ/m3 410
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 25
19
Thermal Shock Resistance, points 19
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 20.5 to 23
17.5 to 18.5
Copper (Cu), % 0.5 to 1.5
0 to 0.5
Iron (Fe), % 35.5 to 46.2
74.9 to 81.8
Manganese (Mn), % 0 to 3.0
0 to 1.0
Molybdenum (Mo), % 6.5 to 8.0
0 to 0.5
Nickel (Ni), % 26 to 28
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.050
Silicon (Si), % 0 to 0.5
0.2 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.050