Special High strenght Brasses

Our alloys

Deployment of brasses for mechanical parts subjected to demanding applications presupposes an in-depth knowledge of materials and an extensive experience in their production and use.

Our technicians’ experience is at the disposal of our client base in the sustained search for improvement in both the choice of materials for melting recipes and for the application modalities. A sustained presence in the market over a number of decades, allows us to count on an ample choice of alloys of our formulation in our production range, responding to precise in-house qualitative specifications, apart from a considerable number of standardised alloys as well. The prerogative of our productions is the absolute observance of qualitative standards, whether these are required by national, Italian or foreign unifications (UNI -DIN -BS – ASTM – AFNOR -ISO etc.) or should these be imposed by client specifications. Our control laboratories systematically provide their support with advanced equipment and methods aimed at verifying compliance at every stage of the productive cycle. Furthermore, at the utilisation stage, our technical assistance facilities are available on request at client premises, providing advice and collaborating in finding solutions to problems of an operative nature.

Chemical Composition %

Alloy designation Cu Fe Mn Al Ni max Sn max Pb max Si max Zn
OTS1 UNI 6138 (OTS2 PER ELICHE) 58 – 61 0,5 – 1,5 0,5 – 2,5 0,5 – 1,5 2,5 0,30 0,20 0,10 resto
OTS2 UNI 6139/B 54 – 58 0,5 – 2,0 1 – 4,5 1 – 3 0,5 0,10 0,05 0,10 resto
OTS3 UNI 6139/A 54 – 58 0,5 – 2,0 1 – 4,5 1 – 3 0,5 0,10 0,05 0,10 resto
SAE 430 gr. A 60 – 68 2,0 – 4,0 2,5 – 5,0 3,0 – 7,5 0,50 0,20 0,20 0,10 resto
SAE 430 gr. B 60 – 68 2,0 – 4,0 2,5 – 5,0 3,0 – 7,5 0,50 0,20 0,20 0,10 resto
SAE 43 58 – 60 0,40 – 2 1,50 max 0,50 – 1,50 1 1 0,40 0,10 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
OTS1 UNI 6138 (OTS2 PER ELICHE) 8,3 22 40 1,9 – 2 950 – 1050 895
OTS2 UNI 6139/B 8,2 18 40 1,9 – 2,1 950 – 1050 862
OTS3 UNI 6139/A 8,1 18 30 1,9 – 2,1 950 – 1050 862
SAE 430 gr. A 8,0 9 30 2,1 – 2,4 980 – 1080 899
SAE 430 gr. B 7,9 8 30 2,3 – 2,4 980 – 1080 885
SAE 43 8,3 22 40 1,9 – 2 950 – 1050 895

Mechanical properties (sand casting)

Commercial designation Tensile strenght R N/mm² Yield strenght Rr (0,2) N/mm² Elongation A % Hardness Brinell HB
OTS1 UNI 6138 (OTS2 PER ELICHE) 450 170 20 110
OTS2 UNI 6139/B 550 220 18 120
OTS3 UNI 6139/A 600 250 15 140
SAE 430 gr. A 620 310 18 180
SAE 430 gr. B 760 420 12 210
SAE 43 550 180 20 110

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