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S31266 Stainless Steel vs. EN 1.4451 Stainless Steel

Both S31266 stainless steel and EN 1.4451 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 31 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 S31266 stainless steel and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
25
Fatigue Strength, MPa 400
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 860
750
Tensile Strength: Yield (Proof), MPa 470
540

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
17
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
20
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 6.5
3.8
Embodied Energy, MJ/kg 89
53
Embodied Water, L/kg 220
190

Common Calculations

PREN (Pitting Resistance) 54
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
170
Resilience: Unit (Modulus of Resilience), kJ/m3 540
710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 3.1
4.5
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 23 to 25
25 to 27
Copper (Cu), % 1.0 to 2.5
2.8 to 3.5
Iron (Fe), % 34.1 to 46
56.2 to 64.6
Manganese (Mn), % 2.0 to 4.0
0 to 1.5
Molybdenum (Mo), % 5.2 to 6.2
2.5 to 3.5
Nickel (Ni), % 21 to 24
5.0 to 7.0
Nitrogen (N), % 0.35 to 0.6
0.12 to 0.22
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.025
Tungsten (W), % 1.5 to 2.5
0