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SS500 steel plate welding properties and product advantages

SS500 steel plate is a very strong high quality steel plate, SS500 steel plate is a new generation of steel structure materials developed on the basis of SS500 steel plate. It has the characteristics of high strength and good corrosion resistance. Mainly used in bridge, steel structure, plant, petrochemical equipment and construction machinery and other fields. There is a great demand in the market. ss500 is a new generation of high-quality steel structural materials made by cold rolling and welding. It has the following advantages: 1, with high strength, corrosion resistance and oxidation resistance; 2, good mechanical properties, can be processed into different shapes; 3, easy to weld.

Welding properties of SS500 steel plate

1. SS500 steel plate has good weldability, and the following points should be paid attention to during welding:

A, avoid welding at low temperature to prevent cracks;

B, the welding heat input should be strictly controlled to avoid grain growth and martensite formation;

C. The post-welding heat treatment process, such as annealing and normalizing, should be reasonably selected.

2. SS500 steel plate is low-alloy high-strength structural steel, which can be welded by traditional electrode arc welding or manual arc welding. The heat affected zone (HAZ) is the temperature range of brittle transition, and a larger microstructure stress is formed in the welding heat affected zone, resulting in a higher tendency of toughness and brittleness. Therefore, the HAZ property is very sensitive to the grade and chemical composition of steel. Generally, the toughness of heat-affected zone of steel grade materials is improved by selecting appropriate weld metal composition and corresponding process parameters, such as ultra-low carbon (≤0.025) or high carbon (≤0.030) composition and appropriate process parameters.

3. Measures should be taken to improve the high temperature performance of materials with higher strength and toughness requirements. Such as high temperature tempering measures can be used to improve the mechanical properties.

SS500 steel plate is a kind of high strength structural steel plate, compared with SS300, SS600, more popular. The welding performance of the steel plate is better than that of the former. This kind of steel does not need to be preheated or pre-welded before welding, that is, it can be used without heat treatment after welding; The size of the welds can be large or small. The plasticity, toughness and fatigue strength of weld metal are improved by adopting the drug skin alloying method and adding alloy elements. Therefore, weight can be reduced and steel can be saved in the manufacture of large structural parts.