Harga XAR400 Wear Plate

Description

XAR^® (eXtra Abrasion Resistant) steels from thyssenkrupp Steel Europe are the solution for applications where wear is a key factor. This Material Specification applies to 3 to 100 mm thick plates of the wear-resistant special structural steel

XAR^® is available in various grades from 300 HBW to 600 HBW and plate thicknesses from 4,00 mm to 100 mm, tailored to particular applications, e.g. mining equipment, earthmoving machinery, steel mill and cement plant equipment, agricultural machinery, etc.

New: XAR^® 400 and XAR^® 450 plates can also be supplied as cut-to-length plates in thicknesses from 4,00 up to 8,00 mm. Due to their very close thickness tolerances of ±0.008’’ (±0,2 mm) they offer weight reduction benefits as well as advantages in terms of cold forming.

Properties of XAR^®

• Higher wear resistance
• Good cutting and welding characteristics
• Better formability
• Lower costs

XAR 400 steel plate: this grade is the most commonly used steel grade with normal abrasion resistant level, it has extraordinary cold formability and weldablity, its abrasion resistant property doesn’t get weekend when the temperature is below 400℃.

XAR 450 steel plate: this grade is a upgraded version of XAR400 with abrasion resistant characteristic improved, the working temperature remains below 400℃.

XAR 500 steel plate: maintains formable and weldable characteristics, with element B added, it has higher level of wear resistance for conveyors, crushers, lorries, etc. It shall be delivered as water quenched.

XAR 550 and XAR 600 steel plate: cold forming is not allowed for the high hardness, with Ni element added, it is delivered as water quenched or soft-annealed steel.

Availability
Thickness: 3 to 100 mm
Size: 2500 x 6000mm

Chemical composition (heat analysis, %)

C	Si	Mn	P	S	Mo	Cr	B
0.20	0.80	1.50	0.025	0.010	0.50	1.00	0.005

Mechanical Properties
Delivery condition: quenched or quenched and tempered
Hardness : 360 – 440 HBW
Yield strength (MPa) : 1050
Tensile strength (MPa) : 1250
Elongation (%) : 12
Notch-bar impact energy at – 40 °C : 30
on Charpy V-longitudinal test piece (J)

Note:
1 MPa = 1 N/mm2
The Brinell hardness shall be determined in accordance with ISO 6506. The hardness shall be measured roughly 1 mm below the surface of the plate.

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 the 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 of the 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 30 mm. 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.

Application

XAR^® wear-resistant steels have proved successful in various applications in which wear and abrasion are major cost factors. Thanks to their high hardness, wear can be minimized and component life increased.

The wide range of XAR^® grades allows designers to choose the optimum steel for the particular application taking loading and production conditions into account. XAR^® steels have found a wide range of applications in important areas of engineering.

Automotive/Trucks

More environmental protection, more safety and cost efficiency are important issues in the automotive industry. As a long-standing partner, thyssenkrupp Steel Europe understands these requirements and provides comprehensive industry-specific expertise with regard to material as well as technology.

Industries Automotive/Trucks

Special Vehicles

Cranes, civil protection vehicles or ships – special-purpose vehicles are used wherever demanding tasks must be performed. thyssenkrupp Steel Europe provides high-performance solutions for the respective field of application setting new standards on the market.

Indutries Special Vehicles

Plant Engineering

Modern machinery and plant engineering needs innovative technologies and reliable as well as high-quality materials. thyssenkrupp Steel Europe develops and manufactures products that both technically and economically belong to the most efficient products of our time.

Industries Plant Engineering

XAR 400 may be used at the discretion of the purchaser for wear-exposed structures, e.g. excavating, mining and earth-moving machinery, truck dump bodies, conveying, crushing and pulverizing equipment, scrap presses and paving moulds.
The processing and application techniques as a whole are of fundamental importance for the successful use of the products fabricated of this steel. The processor/fabricator must assure himself, that his design and work methods are appropriate for the material, are state-of-the-art and are suitable for the envisaged purpose.