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N08904 Stainless Steel vs. S32803 Stainless Steel

Both N08904 stainless steel and S32803 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 73% of their average alloy composition in common.

For each property being compared, the top bar is N08904 stainless steel and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
210
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 38
18
Fatigue Strength, MPa 200
350
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 77
86
Shear Modulus, GPa 79
81
Shear Strength, MPa 370
420
Tensile Strength: Ultimate (UTS), MPa 540
680
Tensile Strength: Yield (Proof), MPa 240
560

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 430
510
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 32
19
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 5.8
3.7
Embodied Energy, MJ/kg 79
53
Embodied Water, L/kg 200
180

Common Calculations

PREN (Pitting Resistance) 37
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
760
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 3.1
4.4
Thermal Shock Resistance, points 12
22

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.015
Chromium (Cr), % 19 to 23
28 to 29
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 38.8 to 53
62.9 to 67.1
Manganese (Mn), % 0 to 2.0
0 to 0.5
Molybdenum (Mo), % 4.0 to 5.0
1.8 to 2.5
Nickel (Ni), % 23 to 28
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0 to 0.1
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.035
0 to 0.0035