S690QL hardness Vs A 36 Steel

Heat resistant steel, as the name implies, is a kind of steel with good stability used under high temperature conditions. Because of its unique function, S690QL hardness, heat-resistant steel occupies a large market space in the steel market. Heat resistant steel has been used in many fields, such as boiler, steam turbine, power machinery, industrial furnace, aviation and petrochemical industry. Different heat-resistant steels have different heat-resistant properties.

Peritectic reaction often occurs in the process of cooling and solidification of wear-resistant steel plate, S690QL hardness, and accompanied by this reaction, there will be greater volume change and linear shrinkage, which is mainly due to the hot cracking of continuous casting slab in the casting process. In the mold, the heat load transmitted from the billet is too much or uneven around the meniscus of molten steel, resulting in uneven heating, which is more likely to produce longitudinal cracks.

How to distinguish between hot rolled and cold rolled process?
The hot-rolled steel sheet has low strength, easy production and processing, and good plasticity. The process performance of the hot-rolled steel plate is poor (air oxidation and low smoothness), but the plastic deformation is good. Generally, it is medium and thick plate, S690QL hardness, high compressive strength, high strength, and high surface smoothness. Cold-rolled steel sheets have high strength and relatively difficult production and processing, but they are not easy to deform and have high compressive strength.

We are willing to cooperate sincerely with you with high-quality S690QL hardness products and sincere service to expand the market and create brilliant! We will work hard to create a first-class steel company and provide you with faster and more considerate after-sales services! Moreover, our shipbuilding steel plates have been certified by the nine countries' classification societies including DNV, ABC, GL, LR, BV, CCS, RINA, NK, and KR. The quality assurance system has passed ISO9001-2000 standard certification.

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