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Lead-free

Diehl Brass Solutions offers a comprehensive portfolio of lead-free brass alloys that are specially tailored to the requirements of modern drinking water applications.

Lead-free Lead-free

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!

  • 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.

Contact

Diehl Metall
Diehl Brass Solutions
Heinrich-Diehl-Straße 9
90552 Röthenbach a.d. Pegnitz
Germany
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Downloads

eZeebrass (pdf)
CUPHIN 2.0 (pdf)
Diehl 430/434 (pdf)

Links

eZeebrass - The new standard

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
alloy 001		 CuZn41Mg CW732R-DW
C49400		 58 ≤0,10 Mg: 0,4 % 85-95 ⚫⚫⚪⚪ ⚫⚫⚫⚫ ⚫⚫⚪⚪ -- ✅ / 2027
eZeeDZR CuZn35MgPAs CW733R
requested		 64 ≤0,10 Mg: 0,1-0,3 % 70-90 ⚫⚫⚫⚪ ⚫⚫⚪⚪ ⚫⚫⚪⚪ acc. to ISO
6509		 beginning 2026 / 2027

Cuphin alloy 430

 CuZn21Si3P CW724R-DW
C69300		 76 ≤0,10 Si: 3,3 % 90-100 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚫⚫⚫ acc. to ISO
6509		 ✅ / ✅
Cuphin alloy 434 CuZn21Si3P CW724R-DW
C69305		 76 ≤0,10 Si: 2,8 % 85-100 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚫⚫⚪ acc. to ISO
6509		 ✅ / ✅
Cuphin alloy 330 CuZn21Si3P CW724R-DW
C69300		 76 ≤0,10 Si: 3,0 % 90-100 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚫⚫⚫ acc. to ISO
6509		 ✅ / ✅
Cuphin alloy 432 CuZn21Si3P CW724R-DW
(CC768S)
C69300
(C87850)		 76 ≤0,10 Si: 3,3 % 85-95 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚫⚫⚫ acc. to ISO
6509		 ✅ / ✅

alloy 58

 CuZn42 CW510L-DW 58 ≤0,10 -- 70-85 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚪⚪⚪ -- ✅ / ✅
alloy 62 CuZn38As CW511L-DW 63 ≤0,1 -- 40-50 ⚫⚫⚫⚪ ⚫⚫⚫⚪ ⚫⚪⚪⚪ acc. to ISO
6509		 ✅ / 2027
alloy 57* CuZn42 CW510L-DW 58 ≤0,20 -- 65-80 ⚫⚫⚪⚪ ⚫⚫⚫⚪ ⚫⚪⚪⚪ -- ✅ / ✅

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