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EN 1.8201 Steel vs. S31803 Stainless Steel

Both EN 1.8201 steel and S31803 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 32 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 1.8201 steel and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
29
Fatigue Strength, MPa 310
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
80
Shear Strength, MPa 390
460
Tensile Strength: Ultimate (UTS), MPa 630
710
Tensile Strength: Yield (Proof), MPa 450
500

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 450
1060
Melting Completion (Liquidus), °C 1500
1450
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
17
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.6
Embodied Energy, MJ/kg 36
49
Embodied Water, L/kg 59
160

Common Calculations

PREN (Pitting Resistance) 5.7
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
180
Resilience: Unit (Modulus of Resilience), kJ/m3 530
630
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 18
20

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 1.9 to 2.6
21 to 23
Iron (Fe), % 93.6 to 96.2
63.7 to 71.9
Manganese (Mn), % 0.1 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.050 to 0.3
2.5 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Niobium (Nb), % 0.020 to 0.080
0
Nitrogen (N), % 0 to 0.015
0.080 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.0050 to 0.060
0
Tungsten (W), % 1.5 to 1.8
0
Vanadium (V), % 0.2 to 0.3
0