T/NXCL 005-2021 Active Group standards

T/NXCL 005-2021 The detection method for the microstructure of Be-based bronze casting and processing products

Publish Date: 2021-11-11 Implement Date: 2021-11-11 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NXCL 005-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nTest methods for the physical and chemical properties of metals

ICS Name: Copper and copper alloys

Publish Date: 2021-11-11

Implement Date: 2021-11-11

Scope

Main technical content: Beryllium bronze is a beryllium-based copper alloy with high strength, high hardness, high elasticity limit, and high fatigue limit, while also featuring high wear resistance, corrosion resistance, non-magnetism, and no impact sparks. High-end products are applied in the aerospace field, where the requirements for the microstructure of beryllium copper are extremely high, with particular attention paid to grain size, defects, and inclusion detection data. However, there are currently no unified standards for the detection of the microstructure of beryllium bronze. Standards related to beryllium bronze include color standards, aerospace standards, and aviation standards, which are numerous but not uniform, and all have their shortcomings. These standards do not specify the detection and evaluation methods for large grains, defects, and inclusions, and cannot meet the development needs of beryllium bronze products. Therefore, it is necessary to develop a quantitative evaluation method suitable for the detection of large grains, defects, and inclusions in the microstructure of beryllium bronze, and to standardize the detection of the microstructure of beryllium bronze. The formulation of this standard will help standardize the detection of the microstructure of beryllium bronze, provide consistent judgment data for the production and promotion of beryllium bronze, and provide strong support for the research, development, application, and production of high-end beryllium bronze, especially in the aerospace and defense fields. This document aims to determine methods suitable for measuring large grains (ALA grains), defects, and inclusions in the microstructure of beryllium bronze, and to provide various options with different convenience and accuracy, which can be selected according to specific circumstances.