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AISI 317L Stainless Steel vs. AISI 329 Stainless Steel

Both AISI 317L stainless steel and AISI 329 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 88% 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 AISI 317L stainless steel and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
240
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
17
Fatigue Strength, MPa 220
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 82
80
Shear Strength, MPa 380
440
Tensile Strength: Ultimate (UTS), MPa 550
710
Tensile Strength: Yield (Proof), MPa 250
540

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 21
16
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.3
3.1
Embodied Energy, MJ/kg 59
44
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 31
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
730
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 3.8
4.3
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
23 to 28
Iron (Fe), % 58 to 68
63.1 to 74
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
1.0 to 2.0
Nickel (Ni), % 11 to 15
2.0 to 5.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030