Astm B197

It is an American standard that specifies in detail the chemical composition requirements, physical properties requirements, sizes and permissible differences of copper-base, copper-nickel, copper-nickel-tin, and copper-nickel-silicon-based powder metallurgy (P/M) materials produced by particle metallurgy methods. This standard applies to the metal powder made of copper and its alloy raw materials, which is processed and formed by metallurgical process and obtained by sintering, compression and other processes.

The ASTM B197 standard covers several families of alloys, such as copper base, copper-tin base, copper-zinc base, and copper-tin-zinc base, for different engineering applications.

The standard specifies the chemical composition range of the alloy, such as copper content, alloying element content limits, etc., to ensure product quality and consistency.

In addition to the chemical composition, ASTM B197 also specifies the physical properties of powder metallurgy materials, such as sintering density, tensile strength, elongation, hardness, etc., to ensure that their performance in the specific application environment meets the requirements.

In terms of size and allowable differences, the standard specifies the size standards for different materials and the allowable range of factory differences to ensure that the size and geometry of the product meet the required engineering specifications.

The ASTM B197 standard is an important standard in the field of copper and its alloy powder metallurgy materials, and is used to guide manufacturers and users to ensure product quality and rational product selection and application.

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