Diehl Brass Solutions

Plant Röthenbach

Post office box 1165
D-90548 Röthenbach

Phone: +49 – 911 – 5704 – 0
FAX: +49 –  911 – 5704 – 435

Email: sales-metall@diehl.com
Web: www.diehl.com/metall

Quality management: Certificates

Representation in Austria since 1983

Burde & CO GmbH
Phone: +43 (0)1 4023973-0
Email: service@burdeco.com

Drill and turn quality brass rods

Standard alloy CuZn39Pb3 n. DIN 17660
further CuZn40Pb2, CuZn39Pb2, CuZn38Pb1,5, CuZn36Pb3

  • Round bars pressed 18 – 80 mm
  • Drawn round rods 6 – 60 mm
  • Drawn hexagon rods 6-60 mm
  • Drawn square bars 6-60 mm


Bar stock list for CuZn39Pb3, free cutting brass
  • Round bars from 6-60 mm
  • Hexagonal rods from 6-60 mm
Hollow rods / tubes made of CuZn39Pb3, free-cutting brass

Round and hexagonal up to an outside diameter of 60 mm and a wall thickness of 15 mm

Brass profile bars in drilling and turning quality

e.g. for lock cylinders

Dezincification resistant brass rods and tubes

in the alloy CuZn36Pb2As according to type approval no. 1582/80 and no. 1584/80 of Statens Planverk, Schweden


Brass tubing made from lead-free and low-lead alloys
  • CuZn37, CuZn36, CuZn36Pb1,5, CuZn37Pb0,5
  • Round tubes up to 65 mm
  • Wall thickness up to 5 mm

CUPHIN – lead-free special brass

Lead-free special brass - chemical composition (nominal, mass fraction)

CUPHIN, DIEHL Leg. 430Pbf is characterized by its lead-free nature. It already fulfills, among other things, the EU directive for electrical and electronic equipment and contributes to the already positive environmental balance of all brass materials.

  • Cu: 76 %
  • Si: 3 %
  • P: 0.05 %
  • Zn: Rest
Manufacturing program
  • Drawn round rods 6 – 70 mm
  • Drawn hexagon rods 6-70 mm
  • Drawn profile bars 6-70 mm
  • Tubes 20 – 120 x 2 – 12mm (AD x WD)
Physical Properties
  • Density 8.3 g/cm³
  • Electric conductivity 4.5 m/Ωmm²
  • Thermal conductivity approx. 35 W/mK
  • E – Modul 100 GPa
Mechanical properties

The Alloy CUPHIN, DIEHL Leg. 430Pbf shows a considerable potential for high-strength properties for different applications. This results in advantages both in the dimensioning of new components and in the design of existing ones. The high strength combined with high elongation at break is otherwise only known from a few types of steel and is therefore an excellent substitute material.

  • Rm Tensile strenght 700 MPa
  • Rp 0.2% – Yield point 480 MPa
  • A5 Elongation at break 23 %
  • Hardness 180 HB
  • Notch impact work EN 10045 (U-Kerb) 14 J
Corrosion properties

The use of the alloying element P (phosphorus) means that the requirements for dezincification resistance according to ISO 6509 are met. In addition, holds CUPHIN, DIEHL Leg. 430Pbf easily meets the specifications of DIN 50916-T1 with regard to resistance to stress corrosion cracking.

Structure / processing properties

CUPHIN, DIEHL Leg. 430Pbf shows a novel structure of α-, κ- and γ phase. The silicon-rich κ and γ phases cause a short-breaking chip shape and thus good machinability. This eliminates the use of lead.


  • Machining: Chip form short-brittle, opposite tool wear CuZn39Pb3 slightly increased
  • Forge: Slightly increased forming forces, tighter temperature control
  • Cold forming: good
  • Hot stamping: very good
  • Surface treatment: polish well, electroplate well
  • Connect: Inert gas/resistance welding good, hard/soft soldering very good
  • Heat treating: Thermal relaxation 200 – 400°C, soft annealing 550 – 700°C