EcoBrass
Mitsubishi Shindoh Co., Ltd.  Mitsubishi Shindoh Co., Ltd. 
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Environmentally Friendly Brass Alloy

Lead-Free, Environmentally Friendly Brass Alloy
It has been known for some time that lead is harmful to the human body. Recent epidemiological research finds that even exposure to low-level concentrations of lead over long periods of time can badly affect the development of infant intelligence and it is said there is some effect on hormonal development. As a result government agencies and private industry are making efforts to reduce lead in our environment.
Typical copper alloys used in the production of brass rod, brass forging and bronze casting contain several percentage points of lead to improve machinability. Unfortunately lead content results in environmental problems such as lead leaching into the drinking water, lead dust during machining and casting, and disposal of lead-contaminated foundry sand. Hence it has long been desired to develop lead-free brass alloys that do not harm humans or the environment.
ECO BRASS provides good machinability without the lead by adding silicon to the copper-zinc alloy. Silicon, unlike lead, is harmless to humans and rich in resources.
Alloys

Chemical Composition (wt%)

Cu
Si
Pb
Sn
Fe
Zn
EcoBrass
75.5
3.0
0.1 max
-
-

Rem

C3604
59.0
-
3.0
0.2
0.2
Rem
CAC406
(BC6)
85.5
-
5.0
5.0
-
Rem


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