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C68400 Brass vs. AISI 439 Stainless Steel

C68400 brass belongs to the copper alloys classification, while AISI 439 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is AISI 439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 18
23
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 330
310
Tensile Strength: Ultimate (UTS), MPa 540
490
Tensile Strength: Yield (Proof), MPa 310
250

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 130
890
Melting Completion (Liquidus), °C 840
1510
Melting Onset (Solidus), °C 820
1430
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 66
25
Thermal Expansion, µm/m-K 20
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.3
Embodied Energy, MJ/kg 47
34
Embodied Water, L/kg 320
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
95
Resilience: Unit (Modulus of Resilience), kJ/m3 460
160
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
25
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 21
6.7
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 0 to 0.5
0 to 0.15
Boron (B), % 0.0010 to 0.030
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 59 to 64
0
Iron (Fe), % 0 to 1.0
77.1 to 82.8
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 0.5
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0.030 to 0.3
0 to 0.040
Silicon (Si), % 1.5 to 2.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.5
0
Titanium (Ti), % 0
0.2 to 1.1
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0