ASTM A128 Standard is a standard specification for high manganese steel castings, which is suitable for the manufacture of various types of high manganese steel castings, including lining plate for gravel breaker, jaw plate for jaw crusher, hammer head for hammer crusher, etc. These castings usually need to be wear, impact, and wear resistant to meet the requirements for use in mining, construction, and other industrial fields.
ASTM A128 The standard specifies the chemical composition, mechanical properties, metallographic organization, hardness and impact performance of high manganese steel castings. Among them, the chemical composition is one of the important factors to ensure the good wear resistance and impact resistance of high manganese steel casting. According to the standard, the main chemical components of high manganese steel casting include carbon (C), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S) and chromium (Cr), and the content of manganese is usually between 11% and 14%. In addition, the standard requires that the metallographic organization and crystal size of the casting be tested to ensure good wear resistance and impact resistance.
In terms of mechanical properties, ASTM A128 standard requires tensile, hardness and impact tests for high manganese steel castings. Through these tests, the performance indexes of tensile strength, yield strength, elongation, hardness and impact toughness can be evaluated to ensure that they can withstand large impact and wear during use.
In addition to the chemical composition and mechanical properties, the ASTM A128 standards also set forth the requirements for the heat treatment process and surface quality of high-manganese steel castings. Heat treatment process can improve the organizational structure and performance of the casting, and improve its wear resistance and impact resistance. The requirements for the surface quality include the surface roughness, defects and oxide layer to ensure that the casting can maintain a good surface condition during use.
In general, the ASTM A128 standard strictly regulates and inspects the performance and quality of high-manganese steel castings to ensure that they can meet the use requirements in mining, construction and other industrial fields. By following this standard, high-manganese steel castings with good wear resistance and impact resistance can be produced, which provides a reliable guarantee for the development and application of related industries.
