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N08904 Stainless Steel vs. AISI 309S Stainless Steel

Both N08904 stainless steel and AISI 309S stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% 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 N08904 stainless steel and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
42
Fatigue Strength, MPa 200
210
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 77
84
Shear Modulus, GPa 79
78
Shear Strength, MPa 370
400
Tensile Strength: Ultimate (UTS), MPa 540
580
Tensile Strength: Yield (Proof), MPa 240
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 32
19
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.8
3.6
Embodied Energy, MJ/kg 79
51
Embodied Water, L/kg 200
170

Common Calculations

PREN (Pitting Resistance) 37
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
190
Resilience: Unit (Modulus of Resilience), kJ/m3 150
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 3.1
4.0
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 19 to 23
22 to 24
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 38.8 to 53
58.1 to 66
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 23 to 28
12 to 15
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.035
0 to 0.030