---
title: "ASTM B657"
url: "https://mat-cs.com/astm-b657/"
description: "This guide covers apparatus and procedures for the metallographic identification of microstructures in cemented carbides."
---

ASTM Standard

# ASTM B657

Standard Guide for Metallographic Identification of Microstructure in Cemented Carbides

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## Significance and Use

4.1 The microstructure of a cemented carbide affects the material’s mechanical and physical properties. This guide is not intended to be used as a specification for carbide grades. Producers and users may use the microstructural information as a guide in developing their own specifications.

## Scope

1.1 This guide covers apparatus and procedures for the metallographic identification of microstructures in cemented carbides.