U.C. Metal supplies high-quality brass strip coils and sheets for electrical contacts, automotive terminals, electronic connectors, architectural hardware, and precision stamped parts. All materials are sourced from reputable primary mills and supported by our in-house coil slitting and cut-to-length shearing capabilities in Sam Phran, Nakhon Pathom.
Primary Brass Grades
JIS C2680 (65/35), JIS C2801 (60/40), JIS C2600 (70/30 Cartridge Brass), JIS C2720
Available Tempers
Annealed (O), 1/4H, 1/2H, 3/4H, H, EH, SH depending on deep-drawing or spring requirements
Available Dimensions
Strip: 0.01 mm – 3.0 mm (Width: 4 mm – 1220 mm) · Sheet: 0.2 mm – 3.0 mm (up to 1220 × 3500 mm)
Chemical Composition
Chemical composition limits according to verified company technical specifications (values in weight %):
| Element | C2680 | C2801 | C2600 |
|---|---|---|---|
| Copper (Cu) | 64.0 ~ 68.0 % | 59.0 ~ 62.0 % | 68.5 ~ 71.5 % |
| Zinc (Zn) | Remaining | Remaining | Remaining |
* Lead (Pb) ≤ 0.05%, Iron (Fe) ≤ 0.05% as impurity limits per standard commercial grades.
Mechanical Properties & Hardness (Temper) Guide
Hardness ranges across standard temper conditions:
| Temper Designation | C2680 | C2801 | C2600 |
|---|---|---|---|
| Annealed (O) | ≤ 90 | — | ≤ 90 |
| 1/4H | 90 ~ 105 | 85 ~ 105 | 90 ~ 105 |
| 1/2H | 105 ~ 130 | 105 ~ 130 | 105 ~ 130 |
| 3/4H | 130 ~ 145 | — | 130 ~ 145 |
| H (Hard) | 145 ~ 160 | ≥ 130 | 145 ~ 160 |
| EH (Extra Hard) | 160 ~ 175 | — | 160 ~ 175 |
| SH (Spring Hard) | 175 ~ 190 | — | 175 ~ 190 |
* Values represent Vickers Hardness (HV) from technical records. Specific mechanical properties, grain size, and mill test certificates can be confirmed upon enquiry.
International Standards Reference
JIS is the primary organizing standard for our brass materials (JIS C2680, C2801, C2600, and C2720). Comparable international grade designations (such as ASTM/UNS, ISO, or GB standards) can be confirmed upon enquiry.
Supply Dimensions & Available Formats
- Strip / Slit Coil: Thickness: 0.01 mm – 3.0 mm · Width: 4 mm – 1220 mm · Inner Diameter (ID): 200 mm, 300 mm, 400 mm, 500 mm.
- Sheet / Plate: Thickness: 0.2 mm – 3.0 mm · Width: up to 1220 mm · Length: up to 3500 mm.
- Custom Processing: Precision coil slitting and cut-to-length shearing according to order requirements.