SGCC is the material grade of hot dip galvanized commercial cold rolled low carbon steel sheet and steel strip specified in the Chinese National Standard (GB/T 2518-2008). The following are some of the main requirements of the SGCC standard for steel quality:
1. Chemical composition: The chemical composition of SGCC steel is required to meet the corresponding standards, including carbon content, silicon content, manganese content, phosphorus content, sulfur content, etc. These requirements help to ensure that the composition of the steel meets specific mechanical and processability requirements.
2. Mechanical properties: The mechanical properties of SGCC steel include tensile strength, yield strength, elongation and other indicators. These performance parameters reflect the strength and plasticity of the steel, and provide a basic guarantee for its range of use and performance.
3. Thickness, width and weight: The SGCC steel standard specifies the thickness, width and weight range of steel. These requirements help to ensure that the dimensional accuracy and weight control of the product are within allowable limits to meet the needs of practical applications.
4. Surface quality: SGCC steel surface quality requirements include the uniformity of zinc coating, gloss, surface smoothness, coating adhesion, etc. These requirements help to ensure the appearance quality of the steel and the associated corrosion resistance.
5. Organization and defects: SGCC steel requires that under a metallographic microscope, the organization of the steel should have a certain uniformity and density. The standard also limits possible defects such as inclusions, pores, creases, etc.
It should be noted that the above is an overview of the general requirements for steel quality in the SGCC standard. In practical applications, according to the specific requirements and the use of the environment, there may be other special requirements, such as corrosion resistance, coating applicability, etc., these requirements can be detailed and agreed in the specific product specifications or contracts. Therefore, when selecting SGCC steel, the relevant standards and specifications should be referred to and complied with, and further confirmed and communicated according to actual needs.
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