tin bronze

NegotiableUpdate on 05/06

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Overview

Overview of QSn4-4-2.5 Tin Bronze $r $nQSn4-4-2.5 is a copper tin zinc lead quaternary alloy, in which the element zinc is dissolved in an alpha solid solution, which can improve the flowability of the alloy and help alleviate the chemical composition non-uniformity of high Sn content on the outside and low on the inside that is prone to occur during solidification - anti segregation. Lead is distributed in a dot like pattern between dendrites, which can improve the friction reduction and cutting performance of alloys. The alloy has good anti sliding friction, excellent cutting performance, and good welding performance, and has good corrosion resistance in atmosphere and fresh water. It can only perform cold pressure processing and cannot withstand any form of hot pressure processing. The main alloy

Product Details

QSn4-4-2.5tin bronzegreat

Material Name: Tin Zinc Lead Bronze Plate (1/3 Hard)

Brand: QSn4-4-2.5

Standard: GB/T 2049-1980 (confirmed in 1996)

Characteristics and Scope of Application:

To add zinc and lead alloy elementstin bronzeIt has high anti friction and good cutting properties, is easy to weld and fiber weld, and has good corrosion resistance in air and fresh water. It can only be pressure processed in cold state, and due to lead content, it is prone to thermal brittleness during hot processing.

● Chemical composition:

Copper Cu: Surplus

Tin Sn: 3.0~5.0

Zinc Zn: 3.0~5.0

Lead Pb: 1.5~3.5

Phosphorus P: ≤ 0.03

Aluminum Al: ≤ 0.002

Iron Fe: ≤ 0.05

Antimony Sb: ≤ 0.002

Bismuth Bi: ≤ 0.002

Note: ≤ 0.2 (impurities)

● Mechanical properties:

Tensile strength σ b (MPa): 392-490

Elongation rate δ 10 (%): ≥ 10

Hardness: 65-85HRB

Note: Tensile mechanical properties of sheet metal

Heat treatment specification: No heat processing is required; Annealing temperature is 600 ℃.

Different elements contained

Aluminum bronze is a copper based alloy with aluminum as the main alloying element. It is an aluminum bronze containing iron and manganese elements and belongs to high-strength heat-resistant bronze.

Bronze with tin as the main alloying element, sometimes supplemented with elements such as phosphorus, lead, and zinc.

2. Different corrosion resistance and strength

Aluminum bronze has high strength and good wear resistance, and is used for high-strength screws, nuts, copper sleeves, sealing rings, and wear-resistant components. Its outstanding feature is its good wear resistance. Aluminum bronze can be strengthened by heat treatment, with high strength ratio and good resistance to high temperature oxidation.

Corrosion resistant and wear-resistant, with good mechanical and process properties, and can be welded and brazed well without sparking during impact. It is highly corrosion-resistant in the atmosphere, seawater, freshwater, and steam, and is widely used in steam boilers and ship parts.