BS 218 (governed by the historic British Standard BS 218: Brass Forging Stock and Forgings, later integrated into BS 2872 / BS 2874 CZ122 and harmonized in Europe as EN 12165 CW617N / CuZn40Pb2) is a standard specification for hot forging and hot stamping brass. Structured as a two-phase (α + β) duplex brass with 56.5% to 60.0% copper and a balanced 1.0% to 2.5% lead content, BS 218 is formulated to deliver high plasticity under forging temperatures alongside free-machining performance during secondary CNC finishing.
Typical Uses | |
| Builders Hrdware | Builders Hardware, Butts, Hinges. |
| Architecture | Architectural Sections, Door Frames, Thresholds, Window Frames. |
Element |
Copper |
Iron |
Zinc |
Lead |
Others |
| Min (%) | 56.50 | – |
Balance |
1.00 | – |
| Max (%) | 60.00 | 0.30 |
2.50 | 0.70 |
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