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EN 1.5521 Steel vs. S31803 Stainless Steel

Both EN 1.5521 steel and S31803 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 1.5521 steel and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
29
Fatigue Strength, MPa 210 to 310
370
Poisson's Ratio 0.29
0.27
Reduction in Area, % 59 to 72
50
Shear Modulus, GPa 73
80
Shear Strength, MPa 310 to 360
460
Tensile Strength: Ultimate (UTS), MPa 430 to 1390
710
Tensile Strength: Yield (Proof), MPa 300 to 490
500

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1060
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
49
Embodied Water, L/kg 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
180
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 630
630
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 15 to 49
25
Strength to Weight: Bending, points 16 to 35
23
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 13 to 41
20

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.16 to 0.2
0 to 0.030
Chromium (Cr), % 0
21 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 98 to 98.9
63.7 to 71.9
Manganese (Mn), % 0.9 to 1.2
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.020