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S31266 Stainless Steel vs. EN 1.1122 Steel

Both S31266 stainless steel and EN 1.1122 steel are iron alloys. They have 41% 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 1.1122 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 40
12 to 21
Fatigue Strength, MPa 400
170 to 260
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
63 to 73
Shear Modulus, GPa 81
73
Shear Strength, MPa 590
240 to 290
Tensile Strength: Ultimate (UTS), MPa 860
340 to 460
Tensile Strength: Yield (Proof), MPa 470
240 to 370

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.8
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 6.5
1.4
Embodied Energy, MJ/kg 89
18
Embodied Water, L/kg 220
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
36 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 540
160 to 360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
12 to 16
Strength to Weight: Bending, points 24
14 to 17
Thermal Diffusivity, mm2/s 3.1
14
Thermal Shock Resistance, points 18
11 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0.080 to 0.12
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 1.0 to 2.5
0 to 0.25
Iron (Fe), % 34.1 to 46
98.7 to 99.62
Manganese (Mn), % 2.0 to 4.0
0.3 to 0.6
Molybdenum (Mo), % 5.2 to 6.2
0
Nickel (Ni), % 21 to 24
0
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.025
Tungsten (W), % 1.5 to 2.5
0