UBA Positive list 4MS

Our alloys

From December 1, 2013, the German Federal Agency for the Environment (UBA) standards published in April 2013, will come into force in Germany: this will specify the positive list of alloys for the production of components destined for coming into contact with drinking water.
After a 2-year transition period this regulation will become compulsory as from December 1, 2015.

Having timeously received the UBA agency’s provision, Forelli Pietro srl has already adapted its production in full compliance with said standard, already supplying all its clients with materials conforming to and anticipating these future compulsory rules.

Chemical Composition %

Alloy designation	Cu	Pb	Al	Si	Fe	Sn	Ni	Mn	As	Zn	Sb
CB770S	62 – 64	0,2 – 1,6	0,5 – 0,7	0,02 max	0,3 max	0,3 max	0,2 max	0,1 max	0,04 – 0,14	resto
CB771S	62 – 65	0,2 max	0,45 – 0,7	0,02 max	0,2 max	0,3 max	0,2 max	0,1 max	0,02 – 0,04	resto	0,02 – 0,05
CB768S – ECOFOR	75 -77	0,1 max	0,05 max	2,7 – 3,5	0,3 max	0,3 max	0,2 max	0,05 max		resto

Alloy designation	Cu	Sn	Pb	Zn	Ni	Fe	Sb	S	P	Mn
CB499K	84 – 88	4 – 6	0,2 – 3	4 – 6	0,1 – 0,6	0,30 max	0,10 max	0,04 max	0,04 max	0,02 max

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	8,41	22	70	1,8 – 1,9	960 – 1040	900
CB771S	8,41	22	70	1,8 – 1,9	960 – 1040	900
CB768S – ECOFOR	8,25	7,8	50	2	900 – 940	860
CB499K	8,7	12 – 14	80	1,4 – 1,7	1100 – 1250	855

Mechanical properties

Commercial designation	Tensile strenght R N/mm²	Yield strenght Rr (0,2) N/mm²	Elongation A %	Hardness Brinell HB
CB770S	380 – 420	230 – 280	28 – 35	85 – 100
CB771S	380 – 420	230 – 280	28 – 35	85 – 100
CB768S – ECOFOR	460 – 500	180-230	20-30	100-115
CB499K	200 – 240	90 – 110	13 – 19	60 – 75

UBA Positive list 4MS

Chemical Composition %

Physical properties

Mechanical properties

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

Our alloys

Brasses

Low Lead
Brasses

Special high
strenght Brasses

Aluminium
Bronzes

Tin Bronzes