50mm thickness NM400 steel for vehicle with high quality

NM400 steel for vehicle, Hardened wear-resistant plates are gradually annealed at a temperature higher than 250℃ to lose their hardness, which greatly reduces the wear resistance. The welding process will also reduce the hardness near the weld; the wear layer of the bimetal wear plate is of high alloy composition, and there is a secondary hardening effect at a certain temperature, and it can generally work below 650℃.

The characteristic of niobium in NM400 steel for vehicle etc. steel material is to increase the recrystallization temperature of austenite, so as to achieve the purpose of refining austenite grains. In general, the amount of niobium added in steel material is less than 0.05%, and the contribution of niobium above 0.05% to strengthening and toughening will no longer be obvious.

BBN STEEL supply NM400 steel for vehicle plate specifications range: thickness 8-650mm, width 1500-4020mm, length 4000mm-17000mm, single weight maximum 30.00 tons. Various special specification sheets can be rolled according to customer requirements. Types of steel products: carbon structural steel pipes, low-alloy high-strength steel sheet, steel angles for bridges, steel section for building structures, steel plates for shipbuilding and offshore platforms, steel for boilers and pressure vessels and alloy structures.

As a basic building material, steel plates are currently widely used in automobiles, shipbuilding, chemical industry, aerospace and other fields. Reasonable selection of flaw detection methods to ensure the quality of NM400 steel for vehicle steel plates is of great significance to safe production. Common defects of steel plates are folding, inclusion, shrinkage, air bubbles, delamination and cracks. These problems can be discovered in time through flaw detection.