Lead-free alloys

Ready for the future of drinking water

Drinking water is our most important resource - essential for life and fundamental to our health. That is why the requirements for materials that come into contact with drinking water are increasing worldwide.

Diehl Brass Solutions offers a comprehensive portfolio of lead-free brass alloys specifically tailored to the requirements of modern drinking water applications. Our materials meet the strictest international standards and offer maximum safety, efficiency and environmental compatibility.

eZeebrass – The New Lead-Free Standard Brass Sets the Benchmark.

Thanks to its optimized composition, eZeebrass meets the highest requirements for machinability and processing. By incorporating magnesium as a chip breaker, eZeebrass produces short, easily manageable chips in machining and processing operations—fully automated and lead-free!

With a copper content of 58% in the alloy, eZeebrass serves as the foundation for an economical transition to a lead-free world.

The alloy variant eZeedzr combines the excellent machinability of eZeebrass with dezincification resistance in accordance with DIN EN ISO 6509.

It’s eZee!

Explore the total eZee Alloy Family

Cuphin – The Versatile Material Family for Installation Applications

The Cuphin material family has been an outstanding solution for a wide range of installation applications for years. Different Cuphin variants offer application-specific property profiles.

Well-known but Lead-free – CuZn42 and CuZn38As

The portfolio is completed by the standardized material CuZn42 (CW510L-DW), available in both a lead-free and a low-lead version. As a dezincification-resistant material in this product family, we offer CuZn38As (CW511L-DW). However, the machinability of these alloys cannot be compared to eZeebrass and Cuphin.

Diverse solutions. everything lead-free.

	DIN EN Symbol	DIN EN UNS	Wt-% Cu	Wt-% Pb	Chip breaking element	Machinability %	Cold forming	Hot forming	Strength	DZR	Approval 4MSI/EUPL
eZeebrass Leg. 001	CuZn41Mg	CW732R-DWC49400	58	≤0,10	Mg: 0,4 %	85-95	⚫⚫⚪⚪	⚫⚫⚫⚫	⚫⚫⚪⚪	--	✅ / 2027
eZeedzr Leg. 401	CuZn35MgPAs	CW733RC49500	64	≤0,10	Mg: 0,1-0,3 %	70-90	⚫⚫⚫⚪	⚫⚫⚪⚪	⚫⚫⚪⚪	acc. to ISO6509	expected 2026 / 2027
Cuphin Leg. 430	CuZn21Si3P	CW724R-DWC69300	76	≤0,10	Si: 3,3 %	90-100	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚫⚫⚫	acc. to ISO6509	✅ / ✅
Cuphin Leg. 434	CuZn21Si3P	CW724R-DWC69305	76	≤0,10	Si: 2,8 %	85-100	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚫⚫⚪	acc. to ISO6509	✅ / ✅
Cuphin Leg. 330	CuZn21Si3P	CW724R-DWC69300	76	≤0,10	Si: 3,0 %	90-100	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚫⚫⚫	acc. to ISO6509	✅ / ✅
Cuphin Leg. 432	CuZn21Si3P	CW724R-DW(CC768S)C69300(C87850)	76	≤0,10	Si: 3,3 %	85-95	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚫⚫⚫	acc. to ISO6509	✅ / ✅
Leg. 58	CuZn42	CW510L-DW	58	≤0,10	--	65-80	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚪⚪⚪	--	✅ / ✅
Leg. 61	CuZn38As	CW511L-DW	63	≤0,10	--	30-40	⚫⚫⚫⚪	⚫⚫⚫⚪	⚫⚪⚪⚪	acc. to ISO 6509	✅ / 2027
Leg. 62	CuZn38As	CW511L-DW	63	≤0,20	--	40-50	⚫⚫⚫⚪	⚫⚫⚫⚪	⚫⚪⚪⚪	acc. to ISO6509	✅
Leg. 57*	CuZn42	CW510L-DW	58	≤0,20	--	70-85	⚫⚫⚪⚪	⚫⚫⚫⚪	⚫⚪⚪⚪	--	✅ / ✅

*According to REACH definition not lead-free, but low-lead.

Diehl Brass Solutions - The strategic business field for semi-finished brass and copper products

As a strategic business unit of Diehl Metall, Diehl Brass Solutions stands for the development and production of high-quality semi-finished brass and copper products. With a broad portfolio of alloys - including lead-free and low-lead materials - as well as state-of-the-art casting, pressing and drawing processes, materials are created for demanding applications in industry, sanitary technology and mechanical engineering.

Learn more about Diehl Brass Solutions