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AISI 439 Stainless Steel vs. C87500 Brass

AISI 439 stainless steel belongs to the iron alloys classification, while C87500 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
18
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
42
Tensile Strength: Ultimate (UTS), MPa 490
460
Tensile Strength: Yield (Proof), MPa 250
190

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 890
170
Melting Completion (Liquidus), °C 1510
920
Melting Onset (Solidus), °C 1430
820
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 25
28
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
27
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.3
2.7
Embodied Energy, MJ/kg 34
44
Embodied Water, L/kg 120
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
67
Resilience: Unit (Modulus of Resilience), kJ/m3 160
160
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 18
16
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 6.7
8.3
Thermal Shock Resistance, points 16
17

Alloy Composition

Aluminum (Al), % 0 to 0.15
0 to 0.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
79 to 85
Iron (Fe), % 77.1 to 82.8
0
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
3.0 to 5.0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0.2 to 1.1
0
Zinc (Zn), % 0
12 to 16
Residuals, % 0
0 to 0.5