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S31803 Stainless Steel vs. EN 1.4369 Stainless Steel

Both S31803 stainless steel and EN 1.4369 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 33 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 1.4369 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
40
Fatigue Strength, MPa 370
330
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 460
580
Tensile Strength: Ultimate (UTS), MPa 710
850
Tensile Strength: Yield (Proof), MPa 500
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1060
940
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 17
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
3.0
Embodied Energy, MJ/kg 49
43
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 34
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
280
Resilience: Unit (Modulus of Resilience), kJ/m3 630
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
31
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 20
18

Alloy Composition

Carbon (C), % 0 to 0.030
0.070 to 0.15
Chromium (Cr), % 21 to 23
17.5 to 19.5
Iron (Fe), % 63.7 to 71.9
63 to 70.2
Manganese (Mn), % 0 to 2.0
5.0 to 7.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
6.5 to 8.5
Nitrogen (N), % 0.080 to 0.2
0.2 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0.5 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015