Countries and the ISO stainless steel standards are provided for hot-rolled (forged) steel, in addition to heating and pressure processing of steel, the general state of heat treatment delivery (heat treatment requirements specified in the order contract). After heat treatment, according to requirements, to pickling, shot peening or turning peeling surface treatment or surface finishing. For cold-rolled or cold-drawn steel, cold or cold working state, or cold after heat treatment, pickling or shot peening, or heat treatment after smoothing, grinding, polishing, or re-different degrees of hardening processing delivery.
ISO and EN, DIN standards, the state of delivery of steel according to the production and processing methods and surface conditions of several different types of combinations, more scientific and reasonable, conducive to standard implementation.
With regard to the heat treatment system, in addition to ASTM standards, countries and ISO standards for each grade of steel delivery heat treatment system or the determination of mechanical properties of the sample heat treatment system made specific provisions. Only the ASTM standard, in addition to precipitation hardening steel, the steel standard is generally not for each brand of heat treatment system for specific provisions, only the provisions of heat treatment types (such as annealing, melting or aging), various types of steel heat treatment requirements are All varieties of general technical requirements described in the standard.
