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EN 1.4959 Stainless Steel vs. S31277 Stainless Steel

Both EN 1.4959 stainless steel and S31277 stainless steel are iron alloys. They have 90% 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 EN 1.4959 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, % 40
45
Fatigue Strength, MPa 170
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 430
600
Tensile Strength: Ultimate (UTS), MPa 630
860
Tensile Strength: Yield (Proof), MPa 190
410

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 510
430
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 31
36
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 5.4
6.7
Embodied Energy, MJ/kg 76
90
Embodied Water, L/kg 200
220

Common Calculations

PREN (Pitting Resistance) 21
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
320
Resilience: Unit (Modulus of Resilience), kJ/m3 96
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
29
Strength to Weight: Bending, points 20
25
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Carbon (C), % 0.050 to 0.1
0 to 0.020
Chromium (Cr), % 19 to 22
20.5 to 23
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0.5 to 1.5
Iron (Fe), % 39.4 to 50.5
35.5 to 46.2
Manganese (Mn), % 0 to 1.5
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 30 to 34
26 to 28
Nitrogen (N), % 0 to 0.030
0.3 to 0.4
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.7
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0.25 to 0.65
0