Low Lead Brasses

Our alloys

The constant evolution of markets in the latter years has led to a proliferation of brass alloys with low lead content.

Chemical Composition %

Alloy designation Cu Pb Al Si Fe Sn max Ni max Mn max As Zn
CB770S Pb 0,20 max 62 – 64,0 0,20 max 0,5 – 0,7 0,02 max 0,3 max 0,3 0,2 0,1 0,09 – 0,13 resto
Biaffinato Pb 0,20 58,5 – 60 0,2 max 0,4 – 0,8 0,05 max 0,2 max 0,3 0,2 0,1 resto
Lega Verde 59 – 61 0,05 max 0,3 – 0,5 0,02 max 0,10 max 0,05 0,3 0,03 resto

Physical properties

Commercial designation Density Kg/dm³ Electrical conductivity % IACS Machinability rating % (free-machining brass = 100) Linear shrinkage % Optimum casting range °C Lower melting point °C
CB770S Pb 0,20 max 8,40 22 65 1,8 – 1,9 960 – 1040 900
Biaffinato Pb 0,20 8,38 22 65 1,8 – 1,9 960 – 1040 880
Lega Verde 8,36 28 60 1,8 – 2 950 – 1050 905

Mechanical properties

Commercial designation Tensile strenght R N/mm² Yield strenght Rr (0,2) N/mm² Elongation A % Hardness Brinell HB
CB770S Pb 0,20 max 380 – 420 230 – 280 30 – 37 85 – 100
Biaffinato Pb 0,20 380 – 420 230 – 280 28 – 35 85 – 100
Lega Verde 350 – 400 100 – 150 40 – 45 80 – 90

We have a large stock of alloys that allow us to respond promptly to the requests of all our customers.

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Our alloys

Brasses

Low Lead
Brasses

Special high
strenght Brasses

Aluminium
Bronzes

Tin Bronzes

UBA Positive
List 4MS