Japan sus304 stainless steel - Encyclopedic - Shanghai Zhilian steel trade

Material Name: Japan sus304 stainless steel
Materials are: stainless steel
The major manufacturers: Other
Physical properties: yield strength (N/mm2) ≥ 205
Availability hardness: the hardness HB ≤ 187 HRB ≤ 90 HV ≤ 200
Typical Applications: 304 stainless steel is a generic form for the 18Cr-9Ni, it is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts, such as food production equipment, 1,2 class Tableware, Xi through chemical equipment, nuclear power, exterior materials, building materials, automobile parts (tank trailer tank trucks), medical equipment, textile industry and ship components.
Related Description: SUS304 is an 18-8 austenitic stainless steel lines, often used as a stamping washer type fastener. Because of its pressing deformation of materials in various parts of varying degrees, about 15% to 40%, and therefore the degree of work hardening materials are different.

SUS304 stainless steel sheet after cold, micro slip plane and grain boundary will produce a large number of dislocations, resulting in the distortion matrix. Larger the distortion, the higher the dislocation density, internal stress and lattice distortion of the more serious, so that the metal deformation resistance and the strength and hardness increased with the deformation, plasticity index elongation, area reduction rate.

When hardening up to a certain extent, such as deformation continues, there will be danger of cracking or brittle fracture, the residual stresses after forming blew easily cause rupture of the workpiece. Under the action of the atmosphere, place some time, the workpiece is automatically intergranular cracking (often referred to as "quarter crack"). Therefore, in SUS304 stainless steel stamping process, in general, must be between the softening annealing process, the intermediate annealing, to eliminate the residual stress, reduced hardness, recovery of plastic materials in order to process the next one.

304L is a low carbon 304 stainless steel variant of the occasion for the need for welding. Lower carbon content makes it close to the weld in the heat affected zone to minimize carbide precipitation, and carbide precipitation may result in some environments, stainless steel, intergranular corrosion (weld erosion). 304J1 304 of copper material is mainly used for processing purposes, are nickel-series.