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EN 1.7380 Steel vs. S31266 Stainless Steel

Both EN 1.7380 steel and S31266 stainless steel are iron alloys. They have 44% of their average alloy composition in common. There are 31 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 1.7380 steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19 to 20
40
Fatigue Strength, MPa 200 to 230
400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
81
Shear Strength, MPa 330 to 350
590
Tensile Strength: Ultimate (UTS), MPa 540 to 550
860
Tensile Strength: Yield (Proof), MPa 290 to 330
470

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Mechanical, °C 460
1100
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 39
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
37
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.8
6.5
Embodied Energy, MJ/kg 23
89
Embodied Water, L/kg 59
220

Common Calculations

PREN (Pitting Resistance) 5.6
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 98
290
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 280
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 20
29
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 11
3.1
Thermal Shock Resistance, points 15 to 16
18

Alloy Composition

Carbon (C), % 0.080 to 0.14
0 to 0.030
Chromium (Cr), % 2.0 to 2.5
23 to 25
Copper (Cu), % 0 to 0.3
1.0 to 2.5
Iron (Fe), % 94.6 to 96.6
34.1 to 46
Manganese (Mn), % 0.4 to 0.8
2.0 to 4.0
Molybdenum (Mo), % 0.9 to 1.1
5.2 to 6.2
Nickel (Ni), % 0
21 to 24
Nitrogen (N), % 0 to 0.012
0.35 to 0.6
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5