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CC499K Lead Free Brass Casting
CC499K Lead Free Brass Casting
CC499K lead free brass casting is the European standard lead-free gunmetal casting alloy designated CuSn5Zn5Pb0.5-C under EN 1982 (Copper Alloys – Castings – Chemical Compositions and Mechanical Properties). CC499K is the direct European equivalent of the US C89833 tin-silicon bronze, containing tin (4–6%), zinc (3–5%), and minimal lead (<0.5%), meeting the requirements of EU Drinking Water Directive 2020/2184/EU, WRAS (UK), KTW W270 (Germany), ACS (France), and RoHS 2011/65/EU. Electrical Accessories India manufactures CC499K lead-free gunmetal sand castings, investment castings, and CNC-machined parts for European water works, UK plumbing hardware, and RoHS-regulated electrical hardware markets, with full EN 10204 Type 3.1 documentation.
CC499K Alloy Composition and Technical Properties
CC499K per EN 1982 is a lead-reduced tin-zinc bronze (gunmetal) with lead content restricted to <0.5% — meeting the “substantially lead-free” threshold for EU Drinking Water Directive compliance and WRAS approval eligibility. The alloy combines the proven casting characteristics of traditional LG2 gunmetal (C83600) with reduced-lead composition, maintaining pressure tightness, corrosion resistance, and mechanical strength for valve body and pressure fitting applications. CC499K is referenced in BS EN 17139:2020 (Copper alloys — Copper alloy products for drinking water applications) as an approved lead-free material.
| Property | Value |
|---|---|
| EN Designation | CC499K |
| EN Composition Name | CuSn5Zn5Pb0.5-C |
| Standard | EN 1982:2017 |
| US Equivalent | C89833 (ASTM B584) |
| Cu Content | 85–88% |
| Sn Content | 4–6% |
| Zn Content | 2–5% |
| Pb Content | <0.5% (EU DWD lead-reduced compliant) |
| Bi Content | <0.5% |
| Tensile Strength | 280–300 MPa |
| Yield Strength | 120–150 MPa |
| Elongation | 12–16% |
| Hardness | 65–78 HB |
| Machinability | 60–70% (vs C36000 = 100%) |
| WRAS | Eligible for WRAS product approval (UK) |
| KTW W270 | Compliant (Germany) |
| ACS | Compliant (France) |
| RoHS | Requires specific composition verification |
| BS EN 17139:2020 | Listed – lead-free copper alloy for drinking water |
| Price (Indicative) | US$ 11.50/kg (FOB India) |
Applications of CC499K Lead-Free Gunmetal Castings
CC499K lead-free gunmetal castings are specified for WRAS-approved plumbing fittings in the UK water supply market; KTW W270-compliant valve bodies for German water works; ACS-compliant fittings for French potable water installations; gate valve, globe valve, and ball valve bodies for EN 1074 potable water service (PN10–PN25); lead-free pipe fittings to EN 1254-2 for UK and European plumbing; water meter housings and flow meter bodies for municipal metering; fire hydrant valve bodies and firefighting equipment; and replacement castings for existing LG2 gunmetal (C83600/CC483K) components where lead-free compliance is required by updated specifications.
International Equivalents
| Designation System | Equivalent | Standard |
|---|---|---|
| EN (Europe) | CC499K / CuSn5Zn5Pb0.5-C | EN 1982:2017 |
| UNS (USA) | C89833 | ASTM B584 |
| BS EN 17139 | Lead-free copper alloy for DW | BS EN 17139:2020 |
| Leaded Equivalent | CC483K / LG2 / C83600 | EN 1982 / BS 1400 |
| WRAS Classification | Lead-reduced gunmetal | UK Water Regs 1999 |
Related Lead-Free Brass Casting Alloys
- C87850 Lead Free Brass Casting – Silicon Brass, US/International
- C89520 Lead Free Brass Casting – Bismuth-Selenium, highest machinability
- C89833 Lead Free Brass Casting – Tin-Silicon Bronze, US equivalent
- CW511L Lead Free Brass Casting – EN 12420 European silicon brass (wrought)
- Lead Free Brass Casting – All Alloys