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Tube, bushing 2.0380 - CuZn39Pb2 - C37700

Tube, bushing 2.0380 - CuZn39Pb2 - C37700

Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer a pipe and a bushing, which are made of brass CuZn39Pb2 (2.0380, C37700). The supplier guarantees the timely delivery of products to any address specified by the consumer.

Technical specifications

The copper-zinc alloy of the brand CuZn39Pb2 (other names — 2.0380, C37700) contains an increased percentage of lead, which improves the mechanical machinability of the material, its corrosion resistance, and also contributes to a significant reduction in the coefficient of friction. This brass is distinguished by increased resistance against erosion processes, including those occurring during the electroerosive treatment of metals and alloys. However, the increased lead content leads to an increase in the degree of toxicity of the alloy, so its use in the food and pharmaceutical industry, as well as for the purposes of drinking water supply is not recommended. In the composition of the brass in question, lead forms a separate phase, so the CuZn39Pb2 (2.0380, C37700) alloy is a single-phase brass.

Urgency of application

The main applications are large sliding bearings made from cast billets and operating under conditions of elevated temperatures and specific loads. Brass CuZn39Pb2 (2.0380, C37700) is also used for the manufacture of tubular tool electrodes to EDM equipment.

Chemical composition

In accordance with the technical requirements of DIN EN 17660, this alloy contains:

Copper — 59… 60%;

Lead — 1.6… 2.5%;

Iron — up to 0,3%;

Nickel — up to 0,3%;

Tin — up to 0.3%;

Aluminum — up to 0,05%;

Zinc is the rest.

The total amount of impurities should not exceed 0.2%.

Physical and mechanical properties

  • density, kg / m 3 — 8500;
  • melting point, 0 С — 880… 895;
  • coefficient of thermal expansion in the temperature range 20… 200 0 С, μm / deg — 21,1;
  • coefficient of thermal conductivity at room temperature, W / mgrad — 109;
  • hardness according to Vickers, НV — no more than 180;
  • limit of temporary resistance, MPa — 490… 560 (respectively, for soft and hard brass);
  • yield strength, MPa — 270… 420 (respectively for soft and hard brass);
  • modulus of elasticity, GPa — 102;
  • permissible tensile elongation,% — 30… 12 (respectively, for soft and hard brass).

Assortment and application features

The tube and bush of brass CuZn39Pb2 (2.0380, C37700) are produced in a wide range of sizes and diameters. When used, especially in ammonia-containing media in the presence of mechanical stress, there is the problem of stress corrosion cracking of the alloy. It is not recommended to use the material in warm acid waters. Plastic molding in the cold state is limited, the temperature range of forging is 680… 780 0 С (if the upper temperature limit is exceeded, the alloy is embrittled). The ability to solder and weld is average, the use of gas welding technologies is not recommended. Mechanical machinability is high, but the alloy’s grindability is poor because of the intense clogging of the surface of grinding wheels with particles of the material being processed.

Supplier — AvekGlob Company — offers to buy a pipe or bush made of brass of the brand CuZn39Pb2 (2.0380, C37700) in a wide assortment of cross-sectional sizes and diameters. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.