DIEHL Ecomerica Family Low Lead Brass Alloys User Guide
- June 1, 2024
- DIEHL
Table of Contents
DIEHL Ecomerica Family Low Lead Brass Alloys
LOW-LEAD BRASS ALLOYS FOR DRINKING WATER INSTALLATIONS
Drinking water is our most important essential nutrient – our source of life – and thus the basis of our health. For this reason, the requirements relating to materials which come into contact with drinking water are becoming ever more stringent worldwide.
The correct selection of suitable materials and products for drinking water installations is thus extremely important. Here, technical, economic and especially hygienic and health aspects play a major role.
In the United States of America, all this is regulated nationwide by the Safe Drinking Water Act in conjunction with the Reduction of Lead in Drinking Water Act. Here, the requirements placed on materials and components which come into contact with drinking water are defined.
For example, the proportion of lead in pipes, fittings, valves and other drinking water components must not exceed a weighted average of 0.25% in most cases. In practice, this often results in the Pb content being restricted to a maximum of 0.25%.
With our Ecomerica family, we offer brass alloys with a lead content of no more than 0.2% in our materials portfolio, thereby meeting the requirements of US legislation.
Composition (mass percentage, reference values)
| ECOMERICA® 062| ECOMERICA® 057| ECOMERICA® 013| CUPHIN®
430
Cu| 63.3| 58| 60.5| 76.0
Pb| < 0.2| < 0.2| < 0.2| ≤ 0.09
Zn| remainder| remainder| remainder| remainder
Other elements| As = 0.09| –| –| P = 0.05, Si = 3.0
Material Designation
Diehl Metall| ECOMERICA® 062| ECOMERICA® 057| ECOMERICA® 013|
CUPHIN® 430
DIN EN Symbol| CuZn38As| CuZn42| CuZn40| CuZn21Si3P
DIN EN| CW511L| CW510L| CW509L| CW724R
UNS| C24453| –| C27450| C69300
Mechanical Properties: (reference values)
| ECOMERICA® 062| ECOMERICA® 057| ECOMERICA® 013| CUPHIN®
430
Tensile strength Rm| 400 MPa| 500 MPa| 450 MPa| 700 MPa
Yield strength Rp0.2| 250 MPa| 330 MPa| 290 MPa| 410 MPa
Elongation A5| 30%| 20%| 25%| 25%
Brinell hardness| 120 HB| 150 HB| 130 HB| 180 HB
Risk Disclosure
The tests took place under the test conditions mentioned here. In these tests, selected properties of the alloy can be investigated. The test results are based on the test setup shown, which has specific laboratory conditions. Deviating conditions in the field may have significant effects. Aspects which play a decisive role include, in particular, but not exhaustively, the design of the components, the further processing of the alloy, the processing of the finished parts made with the alloy, transport and storage, the manner and location of use, the installation and the installation situation.
When it comes to properties, the corrosion resistance of the material is a key factor. The DIN standard DIN EN ISO 8044 (formerly DIN 50900) defines corrosion as a reaction of a metallic material with its environment that causes a measurable change in the material and can impair the function of a metal component or an entire system. From a technical point of view, corrosion is a reaction of a material with its environment that causes a measurable change in the material. Corrosion can impair the function of a component or system. Corrosion, as a complex system of interactions, depends on a large number of factors which, in their multiformity, cannot be fully reproduced under test conditions. The type of corrosion known as dezincification, which occurs with zinc-containing copper alloys that are in contact with drinking water, is familiar to the broad expert public.
The purchaser of the alloy is responsible for determining and testing the design, further processing, application areas of products made from the alloy, and any other relevant factors. This is also applicable when determining the dezincification depth that is considered reasonable for the selected area of application. Diehl cannot accept any liability for this, but solely for the information contained in the enclosed product data sheet.
You can also find the information here on our website.
Corrosion Resistance
| ECOMERICA® 062| ECOMERICA® 057| ECOMERICA® 013| CUPHIN®
430
Dezincification-resistance 1) 1)| yes| no| no| yes
SCC resistance 1 1)| yes, with special measures| yes, with special measures|
yes, with special measures| yes
- values are based on the relevant test standards.
Processing Properties
| ECOMERICA® 062| ECOMERICA® 057| ECOMERICA® 013| CUPHIN®
430
Machinability| 50| 70| 50| 80
Hot workability| fair| very good| good| very good
Cold workability| good| less good| fair| fair
Polishing mechanical| very good| very good| very good| good
Polishing electrochemical| good| good| good| good
Electroplating| very good| very good| very good| good
The table provides an overview of the most important properties of our lead- free materials. For further support, please feel free to contact our experts.
ECOLOGICAL ASPECTS
ECOMERICA alloys can be integrated into existing recycling systems. From an economic standpoint, however, they should be recycled separately.
In the long term, this is the only way to avoid having to resort to expensive primary metals in the manufacturing process.
Besides the low-lead ECOMERICA® materials, our range also includes CUPHIN®, which even surpasses the requirements of US legislation and limits lead content to a maximum of 0.1%.
CUPHIN® also combines a number of other important properties for drinking water applications. For example, good machinability can be combined with good dezincification resistance. High strength combined with high elongation allows greater design freedom, which can be used, for example, to optimize design space. CUPHIN® should be recycled separately
Based on the intended application, you can download all relevant specifications from our website. In our material specifications you will find a list of the physical, thermal, mechanical as well as resistance properties. If you have any questions on the materials and the processing thereof, please feel free to call our experts or send us your inquiry directly.
Customer Support
Your Contact Partner:
Diehl Brass Solutions Stiftung & Co. KG
Phone +49 911 5704-0
Fax +49 911 5704-245
Email: [email protected]
www.diehl.com/metall
