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AISI 303 Stainless Steel vs. AISI 316L Stainless Steel

Both AISI 303 stainless steel and AISI 316L stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 303 stainless steel and the bottom bar is AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40 to 51
9.0 to 50
Fatigue Strength, MPa 230 to 360
170 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 430 to 470
370 to 690
Tensile Strength: Ultimate (UTS), MPa 600 to 690
530 to 1160
Tensile Strength: Yield (Proof), MPa 230 to 420
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 930
870
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Calomel Potential, mV -80
-50
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
3.9
Embodied Energy, MJ/kg 42
53
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
93 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
19 to 41
Strength to Weight: Bending, points 20 to 22
18 to 31
Thermal Diffusivity, mm2/s 4.4
4.1
Thermal Shock Resistance, points 13 to 15
12 to 25

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 17 to 19
16 to 18
Iron (Fe), % 67.3 to 74.9
62 to 72
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 8.0 to 10
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.2
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0.15 to 0.35
0 to 0.030

Comparable Variants