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EN 1.6511 Steel vs. S31100 Stainless Steel

Both EN 1.6511 steel and S31100 stainless steel are iron alloys. They have 69% 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 EN 1.6511 steel and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12
4.5
Fatigue Strength, MPa 480
330
Poisson's Ratio 0.29
0.27
Rockwell C Hardness 55
28
Shear Modulus, GPa 73
79
Shear Strength, MPa 600
580
Tensile Strength: Ultimate (UTS), MPa 990
1000
Tensile Strength: Yield (Proof), MPa 770
710

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 36
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.1
16
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.6
3.1
Embodied Energy, MJ/kg 21
44
Embodied Water, L/kg 53
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
40
Resilience: Unit (Modulus of Resilience), kJ/m3 1590
1240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 35
36
Strength to Weight: Bending, points 28
29
Thermal Diffusivity, mm2/s 9.9
4.2
Thermal Shock Resistance, points 29
28

Alloy Composition

Carbon (C), % 0.32 to 0.4
0 to 0.060
Chromium (Cr), % 0.9 to 1.2
25 to 27
Iron (Fe), % 95.6 to 97.2
63.6 to 69
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0.9 to 1.2
6.0 to 7.0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.030
Titanium (Ti), % 0
0 to 0.25