Here's a summary of the purpose and use for some of the most common ASTM standards that AFM provides along with links to the standards:

1. ASTM E8 - Standard Test Methods for Tension Testing of Metallic Materials. Purpose: This standard provides procedures for conducting tension tests on metallic materials to determine their mechanical properties, including yield strength, ultimate tensile strength, and elongation. Use: It is commonly used in materials testing laboratories and industries to evaluate the mechanical behavior and strength of metallic materials under tension.
2. ASTM E18 - Standard Test Methods for Rockwell Hardness of Metallic Materials. Purpose: This standard outlines the procedures for determining the Rockwell hardness of metallic materials. Rockwell hardness measures the depth of penetration of an indenter under specific loads, providing an indication of material hardness. Use: It is widely used in industries such as manufacturing, quality control, and materials science to assess material hardness and ensure consistency in hardness measurements.
3. ASTM E23 - Standard Test Methods for Notched Bar Impact Testing of Metallic Materials. Purpose: This standard specifies the test methods for evaluating the impact resistance of metallic materials using notched bar specimens. It measures the energy absorbed by the material during impact, providing insights into its toughness and resistance to brittle fracture. Use: It is commonly used in industries such as construction, automotive, and aerospace to assess the impact toughness of metallic materials for safety and performance considerations.
4. ASTM E399 - Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness KIc of Metallic Materials. Purpose: This standard provides a method for determining the fracture toughness (KIc) of metallic materials under linear-elastic conditions. It measures the material's resistance to crack propagation and helps assess its structural integrity. Use: It is widely used in industries such as aerospace, civil engineering, and manufacturing to evaluate material toughness and make informed decisions regarding design, materials selection, and structural safety.

These ASTM standards play crucial roles in evaluating the mechanical properties, hardness, impact resistance, and fracture toughness of metallic materials. They provide standardized procedures that enable consistent and reliable testing, aiding engineers and researchers in various industries to make informed decisions and ensure the quality and safety of their materials and products.