QSn6.5-0.4 Tin Bronze Rod

What Is QSn6.5-0.4 Tin Bronze Rod?

Bronze containing 3% to 14% tin, in addition to phosphorus, zinc, lead and other elements are often added. It is the earliest alloy used by mankind and has a history of about 4000 years. It is corrosion-resistant, wear-resistant, has good mechanical properties and process performance, and can be welded and brazed well without sparks during impact.

Divided into processed tin bronze and cast tin bronze. The tin content of tin bronze used for pressure processing is less than 6% to 7%, and the tin content of cast tin bronze is 10% to 14%.

Commonly used grades are QSn4-3, QSn4.4-2.5, QSn7-O.2, ZQSn10, ZQSn5-2-5, ZQSN6-6-3, etc. Tin bronze is a non-ferrous metal alloy with the smallest casting shrinkage rate. It can be used to produce castings with complex shapes, clear outlines and low air tightness requirements.

Chinese name: QSn6.5-0.4 tin bronze rod
Grade: QSn6.5-0.4
Standard: GB/T 13808-1992
Copper Cu: margin

The tin content of tin bronze is generally between 3% and 14%, and it is mainly used to make elastic components and wear-resistant parts. The tin content of wrought tin bronze does not exceed 8%, and elements such as phosphorus, lead, and zinc are sometimes added. Phosphorus is a good deoxidizer and can also improve fluidity and wear resistance.

Adding lead to tin bronze can improve machinability and wear resistance, and adding zinc can improve casting performance. This alloy has high mechanical properties, anti-wear properties and corrosion resistance, easy cutting processing, good brazing and welding properties, small shrinkage coefficient, and non-magnetic. Wire flame spraying and electric arc spraying can be used to prepare coatings such as bronze bushings, shaft sleeves, diamagnetic elements, etc.

Tin bronze is a non-ferrous metal alloy with a small casting shrinkage rate. It is used to produce castings with complex shapes, clear outlines and low air tightness requirements. Tin bronze is very resistant to corrosion in the atmosphere, sea water, fresh water and steam, and is widely used in steam boilers. And sea ship parts.

Phosphorus-containing tin bronze has good mechanical properties and can be used as wear-resistant parts and elastic parts of high-precision machine tools. Leaded tin bronze is often used as wear-resistant parts and sliding bearings. Zinc-tin bronze can be used as high-airtight castings.

Copper is a non-ferrous metal closely related to humans. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in my country.

Tin bronze is widely used and used in the electrical and electronic industries, accounting for more than half of the total consumption. Used in various cables and wires, motors and transformers, switches and printed circuit boards, in the manufacture of machinery and transportation vehicles, used in the manufacture of industrial valves and accessories, meters, sliding bearings, molds, heat exchangers and pumps, etc. . It is widely used in the chemical industry to manufacture vacuum vessels, distillation pots, brewing pots, etc. In the defense industry, it is used to manufacture parts, and in the construction industry, it is used as various pipes, pipe fittings, decorative devices, etc.

Tin bronze is very resistant to corrosion in the atmosphere, sea water, fresh water and steam, and is widely used in steam boilers and marine ship parts. Phosphorus-containing tin bronze has good mechanical properties and can be used as wear-resistant parts and elastic parts of high-precision machine tools. Leaded tin bronze is often used as wear-resistant parts and sliding bearings. Zinc-tin bronze can be used as high-airtight castings.

characteristic

Phosphor bronze has similar properties and uses as QSn6.5-0.1. Because of its higher phosphorus content, it has higher fatigue strength, better elasticity and wear resistance, but it has hot brittleness during hot processing and can only be processed by cold pressure. .

use

Tin bronze is a non-ferrous metal alloy with the smallest casting shrinkage rate. It is used to produce castings with complex shapes, clear outlines and low air tightness requirements. Tin bronze is very resistant to corrosion in the atmosphere, sea water, fresh water and steam, and is widely used in steam boilers. And sea ship parts. Phosphorus-containing tin bronze has good mechanical properties and can be used as wear-resistant parts and elastic parts of high-precision machine tools. Leaded tin bronze is often used as wear-resistant parts and sliding bearings. Zinc-tin bronze can be used as high-airtight castings.

chemical composition

Tin Sn: 6.0～7.0
Lead Pb: ≤0.02
Lead Pb: ≤0.02
Boron P: 0.26～0.40
Aluminum Al: ≤0.002
Iron Fe: ≤0.02
Silicon Si: ≤0.002
Beryllium Sb: ≤0.002
Bismuth Bi: ≤0.002
Note: ≤0.1 (impurities)

Mechanical properties

Tensile strength σb (MPa): ≥305
Elongation δ10 (%): ≥58
Note: Longitudinal room temperature tensile mechanical properties of bars
Sample size: diameter>100～120

Heat treatment specifications

Thermal processing temperature is 750～770℃; annealing temperature is 600～650℃.