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EN 1.3956 Stainless Steel vs. S31266 Stainless Steel

Both EN 1.3956 stainless steel and S31266 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 27 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 EN 1.3956 stainless steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 27
40
Fatigue Strength, MPa 240
400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
81
Tensile Strength: Ultimate (UTS), MPa 650
860
Tensile Strength: Yield (Proof), MPa 330
470

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 460
440
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 4.8
6.5
Embodied Energy, MJ/kg 68
89
Embodied Water, L/kg 180
220

Common Calculations

PREN (Pitting Resistance) 34
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
290
Resilience: Unit (Modulus of Resilience), kJ/m3 270
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
29
Strength to Weight: Bending, points 21
24
Thermal Shock Resistance, points 18
18

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 51.9 to 62.1
34.1 to 46
Manganese (Mn), % 4.0 to 6.0
2.0 to 4.0
Molybdenum (Mo), % 1.5 to 3.0
5.2 to 6.2
Nickel (Ni), % 11.5 to 13.5
21 to 24
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.35 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 0.1 to 0.3
0