RAEX

RAEX

Hardened steel has excellent toughness and durability. Raex hardening steels are resistant to wear and surface pressure. The application of this steel grade in the manufacturing process will increase its service life, reduce the wear of structural parts and save costs. Due to the high strength steel Raex can be used in the products manufacturing, light weight and elegant shape with a large energy saving. This brand of steel makes it possible to create an innovative and environmentally safe products. Raex steels respond well to welding, bending and cutting.

Fields of application

    Plate and the leading edges for the scoops of earth-moving machines
    Wearing parts of mining equipment
    Wearing parts of concrete plants and wood technology
    Platform
    Feeders and hoppers

Description of the steel grade

Raex 300, Raex 400, Raex 450 and Raex 500 wear-resistant hardened steel. Numeric designation indicates the average Brinell hardness of 300, 400, 450 and 500 HBW.


Tolerances on dimensions and shape

Plate

The thickness of the EN 10029 Class A. The width and length EN 10029. Flatness EN 10029, Class N normal tolerances for flatness, steel type H.

Sheets

Thickness, width and length EN 10051. Flatness EN 10029 Class N, steel type H.
Abrasive wear

Martensitic microstructure is resistant to abrasion steel ensures high hardness and tensile strength. The hardness of steel Raex 500 more than three times the strength of structural steel S355, Raex 450 - almost three times and Raex 400 - two and a half times. High hardness and tensile strength for high resistance to abrasion. High wear resistance is the most important consideration for selecting these steels.
Tests

Brinell hardness is measured according to standard EN ISO 6506-1 at a distance of 0.3 - 2 mm from the surface of steel. Depth measurement is determined by the thickness and type of product.
Surface quality

EN 10163-2 Class A3. Not allowed to conduct the repair welding of thick plates.


The process of training sheets (Dead Flat)

Sheets made of hardened steel at the plant are Raex training (DF), this procedure is a reduction in cold sheet. Removed the residual stresses in the steel provides higher flatness. This makes it easier to control the process of welding of the sheet. When cutting sheets, previous training (DF), there is a high flatness. Thus, before the subsequent processing steps of sheets correction is required. Flat and with residual stresses sheet reduces the cycle time to process sheet metal. The information about the training of the sheet is made of a quality certificate.

 

The ranges of thicknesses

  sheets, mm Thick sheets, mm
Raex 300 2.5 - 8.0 -
Raex 400 2.5 - 6.4 5 - 60
Raex 450 3.0 - 6.4 6 - 60
Raex 500 4.0 - 5.0 5 - 60

 

The chemical composition

The maximum content %, (metal chemical composition)

  C Si Mn P S Cr Ni Mo B
Raex 300 0.18 0.70 1.70 0.025 0.015 1.50 0.40 0.50 0.005
Raex 400 0.25 0.70 1.70 0.025 0.015 1.50 0.70 0.50 0.005
Raex 450 0.26 0.70 1.70 0.025 0.015 1.00 0.70 0.50 0.005
Raex 500 0.30 0.70 1.70 0.025 0.015 1.00 0.80 0.50 0.005

Additionally, as a micro-alloy materials can be used aluminum (Al) and / or titanium (Ti).

 

The content of carbon equivalent. Typical numbers

  Толщина, мм CEV Продукция
Raex 300 2 - 8 0.47 Sheets
Raex 400 2.5 - 6.4 0.49 Sheets
Raex 400 5 - 12 0.45 Heavy sheets
Raex 400 (12) - 30 0.50 Heavy sheets
Raex 400 (30) - 60 0.56 Heavy sheets
Raex 450 3.0 - 6.4 0.53 Sheets
Raex 450 6 - 30 0.50 Heavy sheets
Raex 450 (30) - 60 0.58 Heavy sheets
Raex 500 4.0 - 5.5 0.55 Sheets
Raex 500 5 - 60 0.64 Heavy sheets

CEV = C + Mn / 6 + (Cr + Mo + V) / 5 + (Ni + Cu) / 15

 

The hardness of each product, and the thickness

  Products Thickness мм Hardess range HBW
Raex 300 Sheets 2.0 - 8.0 270 - 390
Raex 400 Sheets 2.5 - 6.4 360 - 420
Raex 400 Heavy sheets 5 - 15 360 - 420
Raex 400 Heavy sheets (15) - 30 360 - 450
Raex 400 Heavy sheets (30) - 60 360 - 480
Raex 450 Heavy sheets 3.0 - 6.4 420 - 500
Raex 450 Heavy sheets 6 - 60 420 - 500
Raex 500 Heavy sheets 4.0 - 5.5 450 - 540
Raex 500 Heavy sheets 5 - 60 450 - 540

 

Typical mechanical properties

Steel brend Yield strength
Rp0,2 MPa		 Tensile strength
Rm MPa		 Elongation
A5 %		 Resilience,
Charpy V 20 J
Raex 300 900 1000 11 -40 C
Raex 400 1000 1250 10 -40 C
Raex 450 1200 1450 8 -40 C
Raex 500 1250 1600 8 -30 C

Values ​​for steel Raex 400, Raex 450 and Raex 500 show the typical of the mechanical properties tested with the thick sheets of thickness 20 mm.

Values ​​for Raex 300 are typical mechanical properties tested on a thick sheet of 8 mm.