？
Stainless steel composite board and steel band GB/T865-1997
Stainless steel composite board and steel band as specified in GB/T865-1997 are widely used in everyday life and industry, both as a construction material and as an energy storage device. GB/T865-1997 provides Chinas standard specifications for these materials and defines the quality requirements they must meet.
The stainless steel composite board and steel band are produced from hot rolled stainless steel plates composed of several layers of different thickness steel strips and clad on both sides with stainless steel. This multi-ply stainless steel composite board is characterized by high mechanical strength, anti-rust, anti-corrosion and high temperature resistance. The steel strips used to make the board are made of high quality stainless steel and meet requirements in the national GB specification, so the board and steel band should both have the same mechanical, physical and other characteristics.
GB/T865-1997 provides specific guidelines regarding the production parameters and surface finish requirements of the stainless steel composite board and steel band. This standard states that the maximum thickness of the material should be within 6–32mm, the width be 660–1250mm, and the length be 1200–6000mm. The surface finish should contain no more than 5 imperfections per square meter, including indentations, scratches, spots, and other deformations. Additionally, the sheet edge should be chamfered or rounded to protect the board from sharp edge damage due to handling and transportation.
GB/T865-1997 also sets the requirements for the mechanical properties of the steel band and composite board. The tensile strength should be 450N/mm2 max and the yield strength should be 350N/mm2 max. The total elongation should be >=12.5%, while an elongation of 8% or more in a gauge length of 100mm is required. In addition, the surface hardness must be > 185 HV hardness.
The standard also outlines the packaging requirements for the stainless steel composite board and steel band. The quality and grade of the material should be clearly marked on the top of the packages. The packages should be loaded and unloaded properly with crane, forklift, conveyor belt, sling, or other suitable means and handling devices. For packages with heavier weights, additional reinforcement should be used to prevent damage.
In conclusion, GB/T865-1997 provides a comprehensive quality guide for stainless steel composite board and steel band. This standard ensures that these materials meet quality requirements and ensures that the safety and performance of these products are satisfactory.
