Bronze quality appraisal

Bronze is an alloy, mainly made of pure copper (red copper) with tin or lead added. It has the advantages of low melting point, high hardness, strong plasticity, and wear resistance.
Bronze has a wide range of uses, from ancient bronze vessels, weapons, and tools to modern applications, such as aerospace, automobiles, construction, and electrical fields. Bronze's strength and corrosion resistance make it an ideal material for manufacturing a variety of parts and tools.
In bronze quality appraisal cases, Zhongke Testing can provide bronze quality appraisal services.

The main types of bronze include tin bronze, aluminum bronze, lead bronze, phosphor bronze, beryllium bronze, nickel aluminum bronze, manganese bronze, silicon bronze and other types.

GB/T 30015-2013 Bronze rod for contact network
GB/T 26313-2010 Beryllium bronze seamless tube
GB/T 8739-1988 Cast bronze ingot
YS/T 323-2012 Beryllium bronze sheets and strips
YS/T 334-2009 Beryllium bronze round rods
YS/T 584-2006 Chromium and zirconium bronze rods for electrode materials

A mechanical equipment factory purchased a batch of bronze for equipment manufacturing. Later, during use, it was discovered that the quality of the bronze was poor, which affected the performance of the mechanical equipment and caused major problems in subsequent use.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the bronze involved.
quality analysis results:
The appraisal expert group formulated a plan to analyze the performance indicators of this batch of bronze in terms of material, strength, hardness, etc., and made the following appraisal opinion:
This batch of bronze contains many impurities, has poor performance in terms of hardness and plasticity, and does not meet the indicators agreed in the contract between the two parties, so this batch of bronze is unqualified.