Plat XAR 400

Abrasion Steel XAR® 400 Product: XAR 400 Kategori Abrasion Resistant Steel - Wear Plate Scope This material specification applies to 3mm to 100mm thick plates of wear resistant special structural steel XAR® 400. Application Crushers, sievers, feeders, measuring pockets, skips, cutting edges, conveyors, buckets, knives, gears, sprockets, dumptrucks, loaders, industrial trucks, lorries, bulldozers, excavators, slurry pipe systems, screw conveyors, Dumper bodies, containers, crushers, sievers, feeders, measuring pockets, skips, cutting edges, conveyors, buckets, knives, gears, sprockets. Chemical Composition C : 0.20% Si : 0.80% Mn: 1.50% P : 0.025% S : 0.010% Cr: 1.00% Mo: 0.50% B : 0.005% Delivery Condition Quenched or quenched and tempered Hardness at room temperature: 370 – 430 HBW Cold Forming The products made of this steel are suitable for cold bending provided, that consideration is given to the high hardness. The formability of steel decreases with increasing hardness. This has to be kept in mind when forming. The forming must take place at a slow and steady rate, the cut edges must be deburred and the plates heated, if necessary, prior to forming. A final stress-relieving is not necessary for this steel. Machinability In spite of its high wear resistance, the steel exhibits good machinability if sufficiently heavy machine-tools and sharp carbide-tipped tools are used. The feed rate and cutting speed have to be adjusted to the high hardness of the material. Heat Treatment Plates made of XAR® 400 grade receive the required properties as a result of austenitizing and follow-on quenching in special facilities and, where applicable, tempering below Ac1. Direct quenching after hot-rolling is considered equivalent to conventional quenching. The heat treatment depends on the chemical composition and the product thickness. To avoid hardness losses, the steel must not be heated above 250° C. Thermal Cutting Preferably the flame-cutting process is used. For small product thicknesses, however, the plasma cutting process is used in the interest of minimum distortion. Preheating is not normally necessary when flame-cutting thicknesses up to around 30mm. However, if the workpiece temperature is below + 5° C, or the cut edges are to be cold-formed in the course of further processing, preheating to about 150° C should be considered in the interest of cold cracking resistance. Welding If due consideration is given to the general rules for welding, this steel is weldable both manually and automatically. To prevent cold cracking in the welded joints only welding consumables giving welds of very low hydrogen content should be used. Preheating is not generally necessary for welding with austenitic filler metals. Preheating may be necessary for welding with ferritic filler metals. The preheat temperature level for welding depends on the plate thickness and the residual stress state of the structure. The working temperature should not go beyond 250° C. The wear resistance of components fabricated of XAR® 400 may be increased with the aid of wear resistant layers deposited by means of welding or metal spraying. Product Equivalent BRINAR 400 Hardox 400 JFE EH-400 Welten