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AISI 317 Stainless Steel vs. AISI 317L Stainless Steel

Both AISI 317 stainless steel and AISI 317L stainless steel are iron alloys. Their average alloy composition is basically identical. 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 AISI 317 stainless steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 35 to 55
44
Fatigue Strength, MPa 250 to 330
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
82
Shear Strength, MPa 420 to 470
380
Tensile Strength: Ultimate (UTS), MPa 580 to 710
550
Tensile Strength: Yield (Proof), MPa 250 to 420
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 590
1010
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
21
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.3
4.3
Embodied Energy, MJ/kg 59
59
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 31
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
200
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
19
Strength to Weight: Bending, points 20 to 22
19
Thermal Diffusivity, mm2/s 4.1
3.8
Thermal Shock Resistance, points 12 to 15
12

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 20
18 to 20
Iron (Fe), % 58 to 68
58 to 68
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
3.0 to 4.0
Nickel (Ni), % 11 to 15
11 to 15
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030