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S31277 Stainless Steel vs. EN 1.4971 Stainless Steel

Both S31277 stainless steel and EN 1.4971 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 45
34
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
81
Shear Strength, MPa 600
530
Tensile Strength: Ultimate (UTS), MPa 860
800
Tensile Strength: Yield (Proof), MPa 410
340

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
570
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 460
450
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 36
70
Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 6.7
7.6
Embodied Energy, MJ/kg 90
110
Embodied Water, L/kg 220
300

Common Calculations

PREN (Pitting Resistance) 51
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
220
Resilience: Unit (Modulus of Resilience), kJ/m3 410
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
26
Strength to Weight: Bending, points 25
23
Thermal Shock Resistance, points 19
19

Alloy Composition

Carbon (C), % 0 to 0.020
0.080 to 0.16
Chromium (Cr), % 20.5 to 23
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 35.5 to 46.2
24.3 to 37.1
Manganese (Mn), % 0 to 3.0
0 to 2.0
Molybdenum (Mo), % 6.5 to 8.0
2.5 to 3.5
Nickel (Ni), % 26 to 28
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0.3 to 0.4
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0