Beyond high-volume copper and brass alloys, U.C. Metal supplies an extensive range of specialized engineering copper alloys, electronic packaging materials, plated strips, and specialty spring metals. Each alloy offers dedicated physical, electrical, and mechanical attributes tailored to demanding operating conditions.
Nickel Silver (洋白銅)
JIS C7521, C7701, C7351 · Silvery aesthetic, high work-hardening & corrosion resistance
Lead Frame Strip
JIS C1940 / UNS C19400 · High electrical and thermal conductivity for electronic packaging
Beryllium Copper (鈹銅)
JIS C1720 / UNS C17200, C17510 · High tensile strength & fatigue endurance for precision springs
Commercial Bronze & Plated Strips
JIS C2200 (Red Brass), Tin-plated & Nickel-plated materials, Hull Cell brass cathode plates
1. Nickel Silver Alloys (Cu-Ni-Zn)
Nickel Silver (洋白) contains Copper, Nickel, and Zinc. It exhibits a lustrous silvery-white appearance, superior corrosion resistance, high work-hardening capabilities, and excellent shielding properties.
- Primary Grades: JIS C7521, JIS C7701, JIS C7351.
- Key Applications: Mobile and telecommunication shielding components, crystal oscillator casings, optical frames, and precision mechanical parts.
2. Semiconductor Lead Frame Alloy (C194 / C19400)
C19400 is a Copper-Iron-Phosphorus alloy widely used in semiconductor packaging, lead frames, and automotive electrical terminals requiring high electrical and thermal conductivity combined with softening resistance.
- Nominal Composition: Copper with Iron (Fe), Phosphorus (P), and Zinc (Zn) additions.
- Key Applications: Semiconductor lead frames, automotive fuse blocks, electrical terminals.
3. Beryllium Copper Alloys (Cu-Be)
Beryllium Copper alloys provide exceptional strength, spring performance, and fatigue resistance after age-hardening heat treatment, while remaining non-magnetic.
- Primary Grades: JIS C1720 / UNS C17200 (High-Strength), C17510 (High-Conductivity).
- Key Applications: Precision miniature spring contacts, aerospace instrument components, and non-sparking safety tools.
4. Red Brass / Commercial Bronze (C2200)
JIS C2200 (90% Copper, 10% Zinc) provides a warm reddish-golden tone coupled with excellent atmospheric corrosion resistance and resistance to season cracking.
- Key Applications: Architectural hardware, decorative emblems, costume jewelry, weatherstrip metal.
5. Plated Materials & Electroplating Specialties
- Tin-Plated Material: Pre-plated strip for electrical contact reliability and corrosion protection in automotive connectors.
- Nickel-Plated Material: Oxidation resistance and wear protection for battery terminals and electrical components.
- Brass Cathode Plates for Electroplating (Hull Cell): Precision brass cathode test plates specifically sized for Hull Cell electroplating bath quality control.
Technical Specifications & Inquiries
In legacy company records, detailed technical tables for specialty alloys were marked pending update. Full chemical compositions, temper conditions, electrical conductivities, plating thicknesses, and available strip/sheet dimensions can be confirmed upon enquiry.
Supply Dimensions & Available Formats
- Slit Coils & Strips: Thickness: 0.01 mm – 3.0 mm · Custom slitting widths from 4 mm to 650 mm.
- Cut Sheets: Custom cut lengths available upon inquiry.
- Custom Processing: In-house coil slitting and cut-to-length shearing available in Sam Phran, Nakhon Pathom.