ASTM A773/A773M is the ASTM standard for measuring direct current magnetic properties of low coercivity magnetic materials using hysteresigraphs. It helps define a consistent way to evaluate magnetic behavior under DC conditions, which is important for comparing materials, supporting procurement decisions, and verifying product performance. For teams working with soft magnetic materials, this standard provides a technical reference for test method consistency and more reliable results.

What is ASTM A773/A773M?

ASTM A773/A773M, titled Standard Test Method for Direct Current Magnetic Properties of Low Coercivity Magnetic Materials Using Hysteresigraphs, describes a method for measuring DC magnetic properties with hysteresigraph equipment. Its focus is on low coercivity magnetic materials, where precise characterization of magnetic response is often needed. As an ASTM standard, it supports a repeatable testing approach that can be used to assess material behavior in a controlled and comparable way.

Where is ASTM A773/A773M used?

This standard is commonly used in laboratories, quality control environments, and technical evaluation workflows that test low coercivity magnetic materials. It is relevant wherever direct current magnetic property data is needed to compare material lots, confirm conformance, or support engineering decisions. ASTM A773/A773M is especially useful when hysteresigraph-based testing is part of routine material characterization or supplier verification for soft magnetic applications.

Why is ASTM A773/A773M important?

ASTM A773/A773M matters because it helps create a common basis for magnetic property testing, reducing ambiguity in how results are generated and interpreted. That consistency supports compliance efforts, material comparison, and quality control. When organizations rely on direct current magnetic data, a recognized ASTM test method can improve confidence in reported performance and help limit risk during specification review, purchasing, and acceptance testing.

• Direct current magnetic property measurement
• Low coercivity material evaluation
• Hysteresigraph-based test method
• Quality control and comparison testing
• Consistent technical reporting