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AISI 317LMN Stainless Steel vs. AISI 409 Stainless Steel

Both AISI 317LMN stainless steel and AISI 409 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 72% of their average alloy composition in common. There are 32 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 317LMN stainless steel and the bottom bar is AISI 409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
24
Fatigue Strength, MPa 250
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
75
Shear Strength, MPa 430
270
Tensile Strength: Ultimate (UTS), MPa 620
420
Tensile Strength: Yield (Proof), MPa 270
200

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1020
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
25
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
6.5
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.0
Embodied Energy, MJ/kg 65
28
Embodied Water, L/kg 170
94

Common Calculations

PREN (Pitting Resistance) 36
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
83
Resilience: Unit (Modulus of Resilience), kJ/m3 180
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
15
Strength to Weight: Bending, points 20
16
Thermal Diffusivity, mm2/s 3.8
6.7
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17 to 20
10.5 to 11.7
Iron (Fe), % 54.4 to 65.4
84.9 to 89.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 13.5 to 17.5
0 to 0.5
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.75