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AISI 304Cu Stainless Steel vs. S32750 Stainless Steel

Both AISI 304Cu stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 89% 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 S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 45
17
Fatigue Strength, MPa 190
360
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Shear Strength, MPa 370
530
Tensile Strength: Ultimate (UTS), MPa 530
860
Tensile Strength: Yield (Proof), MPa 210
590

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
4.1
Embodied Energy, MJ/kg 43
56
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 18
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110
860
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
31
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 3.5
4.0
Thermal Shock Resistance, points 12
25

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17 to 19
24 to 26
Copper (Cu), % 3.0 to 4.0
0 to 0.5
Iron (Fe), % 63.9 to 72
58.1 to 66.8
Manganese (Mn), % 0 to 2.0
0 to 1.2
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 8.0 to 10
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020