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AISI 309S Stainless Steel vs. N08801 Stainless Steel

Both AISI 309S stainless steel and N08801 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 80% 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 309S stainless steel and the bottom bar is N08801 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
34
Fatigue Strength, MPa 210
260
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 400
570
Tensile Strength: Ultimate (UTS), MPa 580
860
Tensile Strength: Yield (Proof), MPa 230
190

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 440
630
Maximum Temperature: Mechanical, °C 1080
1090
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.6
5.5
Embodied Energy, MJ/kg 51
79
Embodied Water, L/kg 170
200

Common Calculations

PREN (Pitting Resistance) 23
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
220
Resilience: Unit (Modulus of Resilience), kJ/m3 140
92
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
30
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 4.0
3.3
Thermal Shock Resistance, points 13
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 22 to 24
19 to 22
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 58.1 to 66
39.5 to 50.3
Manganese (Mn), % 0 to 2.0
0 to 1.5
Nickel (Ni), % 12 to 15
30 to 34
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.75 to 1.5