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AISI 316 Stainless Steel vs. S31803 Stainless Steel

Both AISI 316 stainless steel and S31803 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 34 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 AISI 316 stainless steel and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 360
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 8.0 to 55
29
Fatigue Strength, MPa 210 to 430
370
Poisson's Ratio 0.28
0.27
Reduction in Area, % 80
50
Shear Modulus, GPa 78
80
Shear Strength, MPa 350 to 690
460
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
710
Tensile Strength: Yield (Proof), MPa 230 to 850
500

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 590
1060
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
17
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.9
3.6
Embodied Energy, MJ/kg 53
49
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 26
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 260
180
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1820
630
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 41
25
Strength to Weight: Bending, points 18 to 31
23
Thermal Diffusivity, mm2/s 4.1
4.3
Thermal Shock Resistance, points 11 to 26
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 16 to 18
21 to 23
Iron (Fe), % 62 to 72
63.7 to 71.9
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.0 to 3.0
2.5 to 3.5
Nickel (Ni), % 10 to 14
4.5 to 6.5
Nitrogen (N), % 0 to 0.1
0.080 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020