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280
280 Brass Product Guide
Applications | Mechanical and Chemical Data | Tolerances
Overview
Also known as Muntz Brass or Muntz Metal, 280 brass is known for its attractive golden color, spectacular corrosion resistance, and strength. 280 is similar to bronze but has a lower cost, better hot working capacity, and is stronger and harder than other brasses as well. 280 is a duplex alpha-plus-beta brass, which gives the alloy its hardness and rigidity. Due to the hardness, it is poorly suited for cold forming operations. Typically used in marine applications. The hull of the famous sailing ship Cutty Sark is plated with 280 brass.
Common Trade Names
Muntz Brass, UNS 28000, CDA 280, C280, ISO CuZn40, 60/40 Brass
Other Resources
Safety Data Sheet | Weight Calculator | Mill Test Reports
Products
Applications
- Marine Equipment
| Physical Properties 280 | |||||
| -H01 | -H02 | ||||
|---|---|---|---|---|---|
| Density | 0.303 lb/in3 | 0.303 lb/in3 | |||
| Ultimate Tensile Strength | 56 ksi | 70.3 ksi | |||
| Yield Tensile Strength | 32 ksi | 50 ksi | |||
| Shear Strength | 35 ksi | 44.2 ksi | |||
| Shear Modulus | 5,800 ksi | 5,800 ksi | |||
| Hardness Rockwell | Brinell | B55 | 89 | B75 | 120 | |||
| Elongation at Break Percentage | 20% | 10% | |||
| Modulus of Elasticity | 15,000 ksi | 15,000 ksi | |||
| Poisson's Ratio | 0.35 | 0.35 | |||
| Machinability Percentage | 40% | 40% | |||
| Melting Point | 1,650-1,660 °F | 1,650-1,660 °F | |||
| Specific Heat | 8.96 x 10^-2 BTU/lb-°F | 8.96 x 10^-2 BTU/lb-°F | |||
| Thermal Conductivity | 854 BTU-in/hr-ft^2-°F | 854 BTU-in/hr-ft^2-°F | |||
| Electrical Conductivity | 28% IACS | 28% IACS | |||
|
Chemistry Information
|
|
Element |
Percentage |
| Residual | 0 - 0.3 |
| Fe | 0 - 0.07 |
| Cu | 59 - 63 |
| Zn | 36.3 - 41 |
| Pb | 0 - 0.3 |
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