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AISI 304Cu Stainless Steel vs. S33550 Stainless Steel

Both AISI 304Cu stainless steel and S33550 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common. There are 33 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 304Cu stainless steel and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 45
40
Fatigue Strength, MPa 190
270
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Shear Strength, MPa 370
470
Tensile Strength: Ultimate (UTS), MPa 530
680
Tensile Strength: Yield (Proof), MPa 210
310

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
470
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
24
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
4.3
Embodied Energy, MJ/kg 43
61
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 18
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
220
Resilience: Unit (Modulus of Resilience), kJ/m3 110
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 3.5
3.9
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 17 to 19
25 to 28
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 63.9 to 72
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0 to 2.0
0 to 1.5
Nickel (Ni), % 8.0 to 10
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030