Mechanical properties of bronze
Mechanical advantages of bronze
Tin bronzes, on the average, contain from 4 to 6% tin and have high mechanical, anticorrosion and antifriction properties, are well processed by cutting and can easily be molded. To improve the quality of lead bronze, lead is introduced, which improves workability and antifriction dignity. The addition of zinc, improves the casting properties, and phosphorus, improves mechanical, antifrictional and foundry qualities.
Tin casting and deformable bronze
Tin foundry bronzes in their composition contain up to 15% tin, lead from 3 to 6%, zinc from 4 to 10% and phosphorus from 0.4 to 1%. Bronze foundries (GOST 614−73) are used to produce various shaped castings. The scarcity and high cost of tin is the main drawback of tin bronzes. Bronze deformable (GOST 5017−74) are used in the production of bushings for parts of instruments, bearing shells, etc. They are supplied as a semi-finished product (wire, rod, strip, tape) in a hard (hardened) and soft (annealed) state.
Tinless bronzes contain iron, aluminum, manganese, silicon, beryllium, lead, and a different combination of accompanying elements. Aluminum bronzes contain from 4 to 11% aluminum, have high corrosion resistance, good mechanical and technological properties. They can easily be processed in a hot state by pressure, and when the aluminum content in them is up to 8%, they are easily treated also in a cold state. Aluminum bronzes, which contain from 9 to 11% aluminum, and also nickel, iron, manganese, harden under the influence of thermal treatment (tempering and hardening).
Brand BrMTS5 has relatively low mechanical advantages, but it has good resistance to corrosion and high plasticity, and also the ability to maintain its strength properties at elevated temperatures.
Brand BrС3О has high anticorrosive properties and thermal conductivity (4 times more than for tin alloys). Such bronze is used for the production of high-loaded bearings experiencing high specific pressure.
Beryllium and siliceous bronze
Brand BrB2 (containing beryllium) has high mechanical properties after heat treatment. It produces the most critical products of special purpose. The disadvantage of it is a complex soldering — it is necessary to use expensive silver solders with flux. Siliceous bronze (BrKMZZ-1, BrKN1−3) is used as a substitute for expensive beryllium bronzes.
In the warehouse of Electrovek-Steel LLC there is a wide range of bronze products of various grades, both foundry and deformable alloys. We value the time of our customers, so we are always ready to help with the best choice. At your service are experienced management consultants. Quality of production is guaranteed by strict observance of production standards. The lead times for orders are minimal. Wholesale buyers receive preferential discounts.