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S31277 Stainless Steel vs. EN 1.4729 Stainless Steel

Both S31277 stainless steel and EN 1.4729 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 55% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is EN 1.4729 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
15
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
75

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
390
Maximum Temperature: Mechanical, °C 1100
850
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 460
490
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 36
7.5
Density, g/cm3 8.1
7.6
Embodied Carbon, kg CO2/kg material 6.7
2.1
Embodied Energy, MJ/kg 90
29
Embodied Water, L/kg 220
100

Common Calculations

PREN (Pitting Resistance) 51
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25

Alloy Composition

Carbon (C), % 0 to 0.020
0.3 to 0.5
Chromium (Cr), % 20.5 to 23
12 to 14
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 35.5 to 46.2
80.4 to 86.7
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 1.0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.010
0 to 0.030