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S31266 Stainless Steel vs. EN 1.4618 Stainless Steel

Both S31266 stainless steel and EN 1.4618 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 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 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
51
Fatigue Strength, MPa 400
240 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 590
480 to 500
Tensile Strength: Ultimate (UTS), MPa 860
680 to 700
Tensile Strength: Yield (Proof), MPa 470
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
13
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 6.5
2.7
Embodied Energy, MJ/kg 89
39
Embodied Water, L/kg 220
150

Common Calculations

PREN (Pitting Resistance) 54
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 540
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
24 to 25
Strength to Weight: Bending, points 24
22 to 23
Thermal Diffusivity, mm2/s 3.1
4.0
Thermal Shock Resistance, points 18
15 to 16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 23 to 25
16.5 to 18.5
Copper (Cu), % 1.0 to 2.5
1.0 to 2.5
Iron (Fe), % 34.1 to 46
62.7 to 72.5
Manganese (Mn), % 2.0 to 4.0
5.5 to 9.5
Molybdenum (Mo), % 5.2 to 6.2
0
Nickel (Ni), % 21 to 24
4.5 to 5.5
Nitrogen (N), % 0.35 to 0.6
0 to 0.15
Phosphorus (P), % 0 to 0.035
0 to 0.070
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.010
Tungsten (W), % 1.5 to 2.5
0