Copper-zinc buttweld fittings for general engineering & plumbing piping.
Material Overview
Brass buttweld fittings offer the machinability and corrosion resistance of brass in a welded, wrought fitting form — used across general engineering, plumbing and decorative piping systems.
Grades & Standards
Available grades and the manufacturing standards commonly applied to brass buttweld fittings.
Standards Explained
Technical Data
Cartridge Brass (C26000) is the primary buttweld fitting grade, with Yellow Brass (C27000) also commonly supplied.
Chemical Composition (% by weight)
| Grade | UNS No. | Cu | Pb (max) | Fe (max) | Zn |
|---|---|---|---|---|---|
| Cartridge Brass | C26000 | 68.5 – 71.5 | 0.07 | 0.05 | Remainder |
| Yellow Brass | C27000 | 63.0 – 68.5 | 0.07 | 0.07 | Remainder |
Composition per ASTM B43 / ASTM B135. Mill test certificates issued per EN 10204 3.1 on request.
Mechanical Properties — Cartridge Brass (C26000)
| Property | Annealed | Half-Hard / Drawn |
|---|---|---|
| Tensile Strength | 325 MPa | 410 MPa |
| Yield Strength | 105 MPa | 310 MPa |
| Elongation | 65% | 23% |
| Density | 8.53 g/cm³ | 8.53 g/cm³ |
Typical values; exact temper confirmed at enquiry stage.
Dimensions
Center-to-end dimension (A) for 90° LR elbows = 1.5 × NPS; for 45° LR elbows (B) = A × tan 22.5°, per ASME B16.9. Equal tee center-to-end (C) = A.
| NPS | OD (in) | 90° Elbow — A (in) | 45° Elbow — B (in) | Equal Tee — C (in) |
|---|---|---|---|---|
| 1/2" | 0.840 | 0.75 | 0.31 | 0.75 |
| 3/4" | 1.050 | 1.13 | 0.47 | 1.13 |
| 1" | 1.315 | 1.50 | 0.62 | 1.50 |
| 1-1/4" | 1.660 | 1.88 | 0.78 | 1.88 |
| 1-1/2" | 1.900 | 2.25 | 0.93 | 2.25 |
| 2" | 2.375 | 3.00 | 1.24 | 3.00 |
| 2-1/2" | 2.875 | 3.75 | 1.55 | 3.75 |
| 3" | 3.500 | 4.50 | 1.86 | 4.50 |
| 4" | 4.500 | 6.00 | 2.49 | 6.00 |
| 6" | 6.625 | 9.00 | 3.73 | 9.00 |
| 8" | 8.625 | 12.00 | 4.97 | 12.00 |
Formula-derived reference values per ASME B16.9. Concentric & eccentric reducer lengths vary by NPS pair — full dimensional drawings with tolerances are issued with every order.
Send us your drawings, sizes and standards — our team will get back to you with a detailed quotation for your Copper-Nickel, Copper, Brass or Bronze piping requirement.
