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S31803 Stainless Steel vs. EN 1.5503 Steel

Both S31803 stainless steel and EN 1.5503 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 S31803 stainless steel and the bottom bar is EN 1.5503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
120 to 160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
12 to 17
Fatigue Strength, MPa 370
180 to 280
Poisson's Ratio 0.27
0.29
Reduction in Area, % 50
63 to 72
Shear Modulus, GPa 80
73
Shear Strength, MPa 460
270 to 320
Tensile Strength: Ultimate (UTS), MPa 710
400 to 520
Tensile Strength: Yield (Proof), MPa 500
270 to 430

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1060
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 17
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.4
Embodied Energy, MJ/kg 49
18
Embodied Water, L/kg 160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
41 to 81
Resilience: Unit (Modulus of Resilience), kJ/m3 630
200 to 490
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
14 to 19
Strength to Weight: Bending, points 23
15 to 18
Thermal Diffusivity, mm2/s 4.3
14
Thermal Shock Resistance, points 20
12 to 15

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0 to 0.030
0.16 to 0.2
Chromium (Cr), % 21 to 23
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 63.7 to 71.9
98.4 to 99.239
Manganese (Mn), % 0 to 2.0
0.6 to 0.8
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.025