Bronze circle, Dnipropetrovsk region.

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Attractive qualities of such a circle: malleability, strength, plasticity, flexibility. The bronze circle is easily subjected to all types of mechanical processing (milling, cutting, stamping, drilling). After processing, it has an even and smooth surface. A circle made of beryllium bronze (contains 0.2-0.5% nickel, up to 2% beryllium) is characterized by special strength and elasticity, which can be further improved by additional heat treatment. The circle welds well and is resistant to corrosion. The bronze circle is widely used in various sectors of the economy due to its durability, corrosion resistance, high thermal and electrical conductivity.
Methods of production of a bronze wheel: hot deformation (pressed, rolled), using tin-free bronzes; cold deformation (tensile). Classification of circles by hardness: soft; semi-solid; solid According to the shape of the section: hexagonal; round; square Accuracy: normal; elevated; high A bronze circle of good quality must not have voids, laminations, non-metallic inclusions. The presence of minor scratches, dents and cracks on the surface is allowed.(//tractor-service.com)
The bronze circle is used in automobile and mechanical engineering, electrical engineering, instrumentation, and the aerospace industry. Its high resistance to corrosion is particularly valuable in shipbuilding. It is perfectly suited for the production of screws, spindles, bolts, valves, shafts, parts of gas and water systems.

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