Description: BBN steel is a well-known steel manufacturer and service provider in China, RAEX 450 abrasion resistant steel is our superior product, we are favored by customers with high quality, competitive price and excellent service
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
RAEX 450 is an abrasion resistant steel supplied as the Raex® brand wear plate, at a nominal 450 HBW. The name is a brand; the number is the nominal Brinell hardness. It is delivered quenched and tempered (Q&T) and is a heavy-wear grade in the Raex® 400–500 range, used where ordinary or moderate-wear plate would wear through too fast.
RAEX 450 is bought for heavy sliding and impact wear — truck-body and dumper liners, excavator buckets, chutes, hoppers, crushers and ground-engaging parts in mining, quarrying and bulk handling. Where even 400 HBW is not enough, the range steps up to RAEX 450 and RAEX 500.
450 HBWNominal HardnessNominal grade; band per mill spec
Mid-range heavy-wear grade of the Raex® 400–500 rangePosition in familyHardness steps up the 400–500 line
02Technical Specifications
What this page publishes, and what must be confirmed on the mill certificate when you enquire.
Item
Specification
Executive Standard
Raex® producer mill specification (a proprietary quenched-and-tempered wear-plate specification). The grade carries no single ASTM or EN designation, but Hardox 450 and XAR 450 are trade plates at a similar nominal hardness
Steel Grade
RAEX 450 (nominal 450 HBW)
Steel Category
Abrasion resistant / wear plate, heavy-duty
Product Form
Hot-rolled plate, quenched and tempered (Q+T)
Thickness Range
Typically 3 – 80 mm; the exact rolled thickness and maximum available thickness are confirmed with the mill and narrow slightly as the nominal hardness rises
Width & Length
Per mill rolling programme; cut-to-length and cut-to-shape available
Thickness Covered by Published Data
The whole Raex® range; the figures below are typical and mill-dependent
MOQ
1 ton (mixed sizes negotiable)
Lead Time by Quantity
1 – 10 t: about 5 days; 10 – 50 t: about 10 days; > 50 t: negotiable
Mill test certificate (MTC) with hardness and ladle analysis; third-party inspection on request
Only the nominal hardness is the guaranteed property. Raex® fixes RAEX 450’s nominal 450 HBW; the exact delivered hardness band varies with thickness and with the producing mill, and thicker plates can guarantee a slightly lower through-hardened hardness at the core. Chemistry, yield, tensile and impact are mill-typical values — confirm the exact composition and mechanicals on the MTC of the lot you buy.
03How to Read the Grade
The brand name tells you the product family and the hardness; it tells you nothing about chemistry or welding behaviour.
Part
Meaning
Raex®
The brand name for a quenched-and-tempered abrasion resistant (wear) plate — made to resist sliding and impact wear, not to carry structural load as its primary job
450
Nominal Brinell hardness, 450 HBW. The real delivery band is defined by the producer’s mill specification and narrows with thickness
Where RAEX 450 sits in the Raex® 400–500 wear-plate ladder
Grade
Nominal HBW
Use when
RAEX 400
400
Heavy wear where moderate-wear plate is not enough; the most formable of the three
RAEX 450
450
Heavier sliding and impact wear
RAEX 500
500
The most severe abrasive / impact duty; least formable
Hardox / XAR (same numbers)
400 / 450 / 500
Trade plates at similar nominal hardness; chemistry and routines differ by mill
Start at the lowest grade that survives the wear. RAEX 400 is the most formable and weldable grade in the Raex® 400–500 range, so it is the right first choice where 400 HBW is enough. Step up the ladder only where the lower grade wears out too quickly.
04Chemical Composition
Because RAEX 450 is made to a hardness target, the analysis below is a typical window seen across major wear-plate producers. Your heat’s real chemistry is on its MTC.
Element
Typical Content (max unless noted), %
C
≤ 0.30 (rises with hardness; higher than the moderate-wear grades)
about 0.45 – 0.65 (typical) — higher than the moderate-wear grades, so welding needs more care
Processing
Fine-grained, aluminium-killed; quenched and tempered
The chemistry is mill-dependent. Different producers reach the same nominal 450 HBW with different recipes, so these figures are a representative range, not a guaranteed composition. Specify and verify against the MTC of the lot you receive.
05Mechanical Properties & Tolerance
Only the nominal hardness is a guaranteed delivery property. The rest are typical values for design reference.
Property
Value
Status
Surface / bulk hardness
450 HBW nominal (band per producer mill spec)
Guaranteed (the only guaranteed item, per Raex® mill spec)
Yield strength
about 1150 MPa (167 ksi)
Typical, not guaranteed
Tensile strength
about 1400 MPa (203 ksi)
Typical, not guaranteed
Elongation A5
about 8 – 12 %
Typical
Charpy V-notch impact
grade / heat-dependent; where specified typically 20 – 40 J at low temperature
Typical / not guaranteed
Thickness tolerance, flatness and surface
Item
Requirement
Thickness Tolerance
Per producing mill standard (commonly 0 / + per mm of thickness); exact value on the MTC
Flatness
Per mill standard / EN 10051-class acceptance where agreed
Width & Length
Per mill rolling programme
Surface Quality
Per mill standard; descaled and inspected before despatch
Hardness is the number you can rely on. RAEX 450 is sold and accepted on its Brinell value. Yield, tensile and impact are useful for estimating, but any of them used in a calculation must come from a test on the delivered lot, not from this page.
06Wear Service and Thickness Selection
RAEX 450 is a heavy-wear grade in the Raex® range. Choose a thickness from the wear duty, not from the hardness number.
Wear-service guidance (by duty, not by a table)
Duty
How the thickness is chosen
Truck-body / dumper liners
Set by the wear rate you can tolerate; 6 – 25 mm is common for heavy-duty bodies
Excavator buckets / cutting edges
Set by impact energy and the weld-on profile; RAEX 400–450 stay weldable for most bucket rebuilds
Chutes / hoppers / transfer points
Set by the abrasiveness and velocity of the flowing material
Ground-engaging / scraper parts
Set by soil and aggregate abrasiveness; step to 500 only for the hardest duty
Do not over-specify. If RAEX 450 survives the duty, it will be cheaper and easier to cut, bend and weld than the next grade up. Reserve the higher grades for where the lower one wears out too fast.
07Processing & Fabrication Guidelines
RAEX 450 is a high-hardness wear plate — weldability and formability fall as the nominal HBW rises, so the workshop rules get stricter with each step up.
Topic
Guideline
Further Heat Treatment
Not intended. Supplied quenched and tempered; any anneal or re-quench lowers hardness and toughness
Cold Bending
Feasible with a generous minimum bend radius (several times t); do a sample bend before tooling is committed
Cutting
Laser, plasma and water-jet are the practical routes; water-jet best preserves the cut edge. Mechanical shearing needs heavy-duty, hardened tooling
Welding
Weldable with a higher carbon equivalent (CEV about 0.45 – 0.65): preheat (around 150 – 200 °C), low-hydrogen consumables, controlled interpass; qualify the procedure for your thickness
Machining
Carbide-tipped tools, rigid set-up, low speed and high feed, ample coolant
Workshop Safety
Cutting and grinding make fine steel dust — wear suitable respiratory protection
Do not take a welding or bending number from a web page. The right preheat, consumable and bend radius depend on the exact heat and thickness. Tell us the operation and we will confirm the parameter set before you cut steel.
08Typical Applications
Where a heavy-wear plate does the work.
Truck & Dumper Liners
Body, tailgate and hopper liners for heavy-duty hauling of rock, aggregate and ore.
Bucket & Cutting Edges
Excavator and loader buckets, cutting edges and wear bars where welding repair is routine.
Crushers & Mills
Concaves, liners and grinding plates in crushing and milling plant.
Chutes & Hoppers
Transfer points and bins where flowing material erodes the wall.
Scraper & Conveyor Flights
Flight bars, scraper blades and conveyor wear parts in bulk handling.
Ground-engaging Parts
Blades, shrouds and high-abrasion components for mining and construction.
Selection advice: start from the wear duty, not from the hardness number. RAEX 450 is a heavy-wear grade in the Raex® 400–500 range — use it where moderate-wear plate is not enough, and step up only where it wears out too fast.
09Processing, Testing & Supply
From plate to a cut, certified, ready-to-fit wear part.
1
Cutting
Laser, plasma or water-jet cutting to your nest, edges cleaned and deburred for fitting.
2
Forming & Machining
Bending and drilling against parameters confirmed for the lot, with carbide tooling and rigid clamping.
3
Inspection
Brinell hardness per EN ISO 6506-1 on the lot, plus ladle analysis, recorded on the mill test certificate.
4
Certified Delivery
Each heat ships with its MTC, packed for export, with third-party inspection arranged on request.
Quote checklist — faster if you send: the job (wear liner / bucket / chute), thickness and size, quantity, any bending or machining, whether an MTC or third-party inspection is needed, destination port and preferred payment terms.
10Frequently Asked Questions
Q1Is RAEX 450 a national or international standard grade (for example a standard NM or AR wear-plate grade)?
No — RAEX 450 is a Raex® brand wear plate supplied to the producer’s proprietary mill specification; it carries no single ASTM or EN grade name. The number 450 is the nominal Brinell hardness. Hardox 450 and XAR 450 are trade plates at a similar nominal hardness.
Q2450 HBW, or an exact number?
450 is the nominal grade name. The producer’s mill specification defines the actual delivered hardness band, which narrows with thickness and varies between mills. Order and inspect against the band on the MTC, not against the round number.
Q3What are the equivalent grades to RAEX 450?
Hardox 450 (SSAB) and XAR 450 (Salzgitter / Ilsenburger) are wear plates at a similar nominal hardness. Chemistry, dimensions and test routines differ between mills, so confirm true equivalence on the mill test certificate rather than by name alone.
Q4Can RAEX 450 be welded?
Yes, but it needs more care than moderate-wear plate because of its higher carbon equivalent (CEV about 0.45 – 0.65). Welding typically needs preheat of around 150–200 °C, low-hydrogen consumables and a qualified procedure for the thickness. It is delivered quenched and tempered and is not meant for further heat treatment.
Q5How do I choose the thickness?
From the wear duty, not the hardness number. RAEX 450 is a heavy-wear grade in the Raex® 400–500 range, so use it where moderate-wear plate is not enough and step up to the next grade only where it wears out too fast.
Q6RAEX 450 vs RAEX 400 — when should I step up?
RAEX 450 is the next step above RAEX 400 (450 vs 400 nominal HBW). It resists heavier sliding and impact wear, but is a little harder to cut, bend and weld. Choose 450 only where 400 HBW wears out too quickly; if even 450 is not enough, step up to RAEX 500.
Sources and limits: the figures on this page are reference information drawn from published Raex® wear-plate literature and producer data sheets. RAEX 450 is supplied to the Raex® producer mill specification; nominal hardness (450 HBW) is the guaranteed property, while chemistry, yield, tensile and impact are typical and mill-dependent and must be confirmed on the mill test certificate of the lot supplied. Raex® is a registered wear-plate trademark; BBN supplies, cuts and processes the plate and the mill certificate is issued by the producing mill. RAEX 450 is a pure abrasion-resistant (wear) plate — any ballistic-protection use is a different product and is not warranted by this page.
Get Your RAEX 450 Wear Resistant Steel Quotation Now
Send us your job (wear liner / bucket / chute), thickness and size, quantity and any bending or machining. We will reply with availability, pricing and the lead time — and tell you plainly whether RAEX 400 is enough or RAEX 500 would give longer life.
BBN Steel has established a complete set of production and supplier management system processes to ensure the improvement of product quality and better service to users.
Production Control
BBN Steel has established a complete production quality control process to ensure every link from research and development to mass production.
Supplier management
Our supplier selection will consider factors such as health and safety, ethics, environmental protection, price and quality to better serve customers.
Certification & Patent
We have successively won various international authoritative certifications, GB /T19001-ISO9001: 2000 quality management system was implemented.
After sales service
We provide booking space, shipping tracking service and after-sales service, we will always be first-class products and perfect pre-sale and after-sales service.
Get in Touch
Welcome to contact us through online consulting, emails and hotline if you are interested in our company or products. Our staff will reply you within 24 hours.
Address: HIGH-TECH DEVELOPMENT ZONE, ZHENGZHOU, CHINA
