Product
Product Details
C28000 Brass Forgings | Muntz Metal 60/40 | UNS C28000
C28000 Brass Forgings | Muntz Metal 60/40 | UNS C28000
C28000 (UNS C28000), known as Muntz Metal or 60-40 Brass, is a hot-working alloy with 60% copper and 40% zinc that provides the highest zinc content of any commercially forged brass. The high zinc content gives C28000 a fully beta-phase structure at elevated temperatures, enabling exceptional plasticity for forging large, simple shapes at lower cost than alpha-beta brasses. C28000 is used where maximum cost-efficiency is required for large brass forgings: condenser tube plates, architectural sheathing components, ship hull cladding plates, and large-bore fittings where dezincification risk is acceptable. Because C28000 is susceptible to dezincification in aggressive water, it is NOT suitable for potable water service — specify CW602N/C35330 DZR brass for water fittings. C28000 is specified per ASTM B124 and BS EN 12167 (nearest: CW507L).
C28000 Chemical Composition
| Element | Cu | Zn | Pb | Fe |
|---|---|---|---|---|
| C28000 (ASTM) | 59.0–63.0% | Balance (~40%) | max 0.30% | max 0.07% |
| CW507L (EN nearest) | 58.0–61.0% | Balance | max 0.30% | max 0.30% |
International Equivalents – Muntz Metal
| Standard | Designation | Region |
|---|---|---|
| ASTM B124 | C28000 (Muntz Metal) | USA |
| EN 12168 | CW507L (CuZn40, nearest) | Europe |
| BS 2874 | CZ109 (Muntz Metal) | UK |
| DIN 17660 | CuZn40 | Germany |
| JIS H3250 | C2800 | Japan |
| IS 319 | 60/40 Brass | India |
Mechanical Properties – C28000 Muntz Metal
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 370–430 MPa (54–62 ksi) |
| Yield Strength (0.2%) | 145–200 MPa |
| Elongation | 15–35% |
| Hardness | 75–95 HRB |
| Density | 8.39 g/cm³ |
| Forging Temperature | 625–720°C (excellent hot workability) |
| Note | NOT dezincification resistant. For water: specify CW602N/C35330 DZR. |
Applications of C28000 Muntz Metal Forgings
C28000 is used for cost-effective large forgings where dezincification resistance is not required: condenser tube sheet blanks for power station and industrial condensers (fresh water service); architectural sheet and structural forgings; heat exchanger end plates; ship hull plate cladding frames; large-bore piping flanges; structural hardware; bolt blanks and heavy fastener forgings; and building architectural trim components. C28000 offers the lowest material cost of any forging brass due to its high zinc content.
- Condenser tube sheets (fresh water/demineralized water service)
- Architectural structural hardware and cladding components
- Heat exchanger end caps and headers (non-seawater service)
- Large-bore piping flanges and structural fittings (industrial, non-potable)
- Heavy fastener blanks (bolts, nuts, anchor bolts) for structural applications
- Marine applications in low-corrosion environments (non-seawater, non-dezincifying)
Pricing
Indicative Price: US$ 13.30 per kilogram (CIF). C28000 offers cost advantage over C37700 due to lower copper content. Contact us for large-quantity quotation.
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See also: Brass Forging Parts Overview | C36500 Leaded Muntz Metal | CW602N DZR Brass (WRAS) | C46400 Naval Brass