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S31803 Stainless Steel vs. EN 1.4878 Stainless Steel

Both S31803 stainless steel and EN 1.4878 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S31803 stainless steel and the bottom bar is EN 1.4878 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
45
Fatigue Strength, MPa 370
190
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 460
430
Tensile Strength: Ultimate (UTS), MPa 710
610
Tensile Strength: Yield (Proof), MPa 500
210

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
490
Maximum Temperature: Mechanical, °C 1060
850
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
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
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 17
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.2
Embodied Energy, MJ/kg 49
46
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 34
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
210
Resilience: Unit (Modulus of Resilience), kJ/m3 630
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 20
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 21 to 23
17 to 19
Iron (Fe), % 63.7 to 71.9
65 to 74
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
9.0 to 12
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0
0 to 0.8