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High Tensile Lead-Free Brasses

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High Tensile Lead-Free Brasses

mLego aims to support its customers in the switch to lead-free alloys by providing efficient technical solutions and by developing new products to better meet their expectations.

Therefore, mLego produces a dedicated range of brass with lead content less than 0.1% including High Tensile Brass.

Lead content less than 0,1% is in accordance with Europe ELV  (End of life Vehicles) and RoHS (Restriction of Hazardous Substances) directives and their potential future evolution.

mLego is also an active member of several working groups focused on the lead-free brass topic in collaboration with the French CETIM and the Pole Mont Blanc Industries

mLego Lead-Free Brass alloys do not contain any of the below components:
- Arsenic
- Cadmium
 - Chromium VI

mLego designation Standard designation Properties & applications Download
BL3 CuZn+classe 2 -
NF A 51-106 :
UZ36N3 - AIR 3370
BL3 is a special lead free brass suitable for hot stamping and machining of parts requiring high mechanical strength.
BL6 CuZn23Al4
(old UZ19A6)
NFL 14-708
This alloy presents an excellent mechanical and wear resistance. It is especially known for its good resistance to friction under heavy loads. CuZn23Al4 is used in aerospace, shipbuilding, water industry, screws & bolts
H75 C67500 - ASTM B138 High strength lead free brass for machining and stamping. Aeronautics, automotive equipment…
HR7 CuZn19Al6
(old UZ19A6)
NFL 14-707
This alloy presents an excellent mechanical and wear resistance. It is especially known for its excellent resistance to friction under heavy loads. CuZn19Al6 is widely used in components of landing gears.
L15 CW723R – EN 12163/12165/12167 : 1998 Special lead free brass with a good machinability due to its biphasic structure α+β. It can be used if Pb ≤ 0,1% is requested with a high level of mechanical properties. For industrial and architectural applications.
L56 CW713R sans plomb – EN 12164/12165/12167 : 2016 Special lead free brass with excellent mechanical and wear resistance. It can be used if Pb ≤ 0,1% is requested with a high level of mechanical properties. L56 is used for slide bearings and valve guides as well as for construction components in mechanical engineering.
SN1 CW719R - EN 12163 / 12165 / 12167
CZ133 - BS 2874
C46400 - ASTM B21
CuZn38Sn1 -DIN 17660
Alloy known under the name "Naval Brass" because of its high resistance to corrosion in seawater. It has good mechanical properties. Naval Brass is widely used in marine applications.