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AISI 317LMN Stainless Steel vs. AISI 309HCb Stainless Steel

Both AISI 317LMN stainless steel and AISI 309HCb stainless steel are iron alloys. Both are furnished in the annealed condition. 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 317LMN stainless steel and the bottom bar is AISI 309HCb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
46
Fatigue Strength, MPa 250
210
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
82
Shear Modulus, GPa 79
78
Shear Strength, MPa 430
410
Tensile Strength: Ultimate (UTS), MPa 620
590
Tensile Strength: Yield (Proof), MPa 270
230

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
510
Maximum Temperature: Mechanical, °C 1020
1090
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 24
23
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.8
4.1
Embodied Energy, MJ/kg 65
59
Embodied Water, L/kg 170
170

Common Calculations

PREN (Pitting Resistance) 36
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
210
Resilience: Unit (Modulus of Resilience), kJ/m3 180
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 14
13

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Chromium (Cr), % 17 to 20
22 to 24
Iron (Fe), % 54.4 to 65.4
56 to 66
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 13.5 to 17.5
12 to 16
Niobium (Nb), % 0
0 to 1.1
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 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030