Manufactured by JFE Steel Corporation in Japan, the EVERHARD™ (EH) series is globally recognized for its exceptional wear life. Among this lineup, the JFE-EH450 is considered the industry's "sweet spot." With a nominal surface hardness of 450 HBW, it delivers significantly higher abrasion resistance than standard 400-grade steels, while maintaining excellent toughness and cold-bending workability that 500-grade steels often lack.
For OEMs manufacturing heavy-duty dump trucks, excavator buckets, and mining crushers, specifying JFE-EH450 means maximizing equipment payload and minimizing maintenance downtime.
JFE-EH450 Chemical Composition & Mechanical Properties
Unlike generic wear plates, JFE utilizes a proprietary micro-alloying process. By maintaining a low Carbon Equivalent (CEV), EH450 ensures superior weldability even in thick plates, preventing cold cracking in the Heat-Affected Zone (HAZ).
1. Chemical Composition (Max %)
(Note: Values may vary slightly based on plate thickness)
| C (Carbon) | Si (Silicon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) | Cr (Chromium) | CEV (Typical) |
| 0.23 | 0.55 | 1.60 | 0.020 | 0.010 | 1.20 | 0.50 - 0.65 |
2. Guaranteed Mechanical Properties & Hardness
(Here we correct the common misconception: EN 10204 3.1 is the certification document, not the production standard. JFE produces to its own strict internal specifications.)
| Yield Strength (Min) | Tensile Strength (Typical) | Elongation (Min) | Impact Toughness (Charpy V-Notch) | Brinell Hardness (HBW) |
| 1000 MPa | 1250 MPa | 10% | ≥ 45J at -40°C | 410 – 490 HBW |
Fabrication Guidelines: Welding and Bending EH450
Despite its high hardness, JFE-EH450 is designed to be workshop-friendly.
- Cutting: Plasma or laser cutting is common. High hardness requires appropriate consumables and slower feed rates; edge quality and heat-affected zones must be controlled.
- Bending/forming: Limited formability due to high hardness; forming prior to final heat treatment or using local heating techniques may be required. Sharp bending radii increase fracture risk.
- Machinability: Difficult relative to mild steel; tooling wear is higher. Use carbide tooling, reduced cutting speeds, and rigid setups.
- Finishing: Grinding and polishing to remove burrs and improve mating surfaces are common; hardfacing welds may be applied for localized wear protection.
JFE EH C450 Steel Plates are applicable for many general purposes such as machine-building, construction of bridges, lifting & mobile equipment, wearing plates, crane booms, rail cars, pylons & other equipment of architectural structures, framework structures, containers manufacturing, vehicles & transport equipment, steel constructors, anti-drill plates such as tumbling machine, shot blasting equipment, and security doors, truck frames, and stone & iron chutes. EH C450 Plates are useful in mining, transport machinery, stone crusher, loading buckets & bulldozers, dump truck bodies, and conveyors, and also useful as a material for civil engineering, mining excavator buckets, cement plant industry, industrial fans, farming equipment, sugar factory, fertilizer industry, petroleum & gas industry, paper industry and many more.
JFE EH450 vs. NM450 (China Equivalent)
NM450 and JFE-EH450 are commercially available abrasion-resistant (AR) steels specified for heavy-wear environments where elevated hardness and good toughness are required. Engineers, procurement managers, and manufacturing planners commonly decide between them when balancing wear life, weldability, fabrication costs, and supply chain considerations.
Typical decision contexts include selecting a plate for dump truck bodies and liners (wear vs. weight), choosing material for earthmoving buckets (toughness and impact resistance vs. hardness), or specifying sheet for chutes and hoppers (cost and availability vs. service life).
tandards and Designations
NM450
Commonly referenced in proprietary or national AR steel product lines (often produced to meet customers' hardness and toughness requirements rather than a single international standard). It is classified as a quenched-and-tempered low-alloy/high-hardness wear-resistant steel.
JFE-EH450
JFE's EH series (e.g., EH400, EH450) are proprietary abrasion-resistant steels produced by JFE Steel Corporation. EH450 is a quenched-and-tempered, high-hardness wear-resistant steel with controlled alloying and heat treatment.
Relevant standards and families in which comparable grades appear:
ASTM/ASME: AR400/AR450 are commonly referenced but are product-type designations rather than strict chemical standards.
JIS: Japanese Industrial Standards reference wear-resistant steels and proprietary grades from Japanese mills.
EN: EN 10163 / EN 10029 / EN 10051 address structural or wear-resistant steels in broader terms.
GB: Chinese national standards and manufacturer specifications may list NM-series grades.
Classification: Both are low-alloy, quenched-and-tempered high-hardness steels (not stainless, not tool steels, not conventional HSLA in the structural sense - they are AR steels designed for wear resistance and acceptable toughness).
While genuine Japanese JFE-EH450 offers top-tier performance, importing it can lead to long lead times and high procurement costs. If your project budget is tight, Chinese NM450 (GB/T 24186) is the ultimate cost-effective alternative.
Produced by top Chinese mills (like Baosteel and NISCO) using advanced Quenching and Tempering (Q&T) technologies, NM450 matches the 410-490 HBW hardness range and offers nearly identical wear life in 80% of earthmoving and mining applications.
The Bottom Line: Switching from imported EH450 to our certified NM450 stock can reduce your raw material costs by 15% to 25%, with MTCs (Mill Test Certificates) provided for full traceability.
What is the difference between E350 and E450 grade steel?
E450 has a higher yield strength than E350 or E250 steel (450 MPa vs 350 MPa and 250 MPa), making E450 a much more viable option for high-load applications.
Does E450 steel weld easily?
E450 steel is designed to have excellent weldability properties, making complex fabrication easy for its engineering structures.
Is the E450 better than the E350?
The E450's higher GVWR and larger fuel tank make it a better fit for heavy-duty applications. The E350 offers a balanced approach for lighter cargo and easier urban maneuverability.
What is E450 grade steel?
E450 BR Plate is a type of high-strength steel plate commonly used in various applications. It is known for its impressive strength and durability, making it an ideal material for structures that must withstand heavy loads.
Advantages of Abrasion-Resistant Steel: Why Upgrade from Mild Steel?
Upgrading your heavy equipment from standard structural steel (like ASTM A36 or S355) to a Quenched and Tempered (Q&T) abrasion-resistant plate is not just a material change-it is a strategic engineering decision that directly impacts your bottom line.
Here is why top-tier OEMs and mining contractors insist on AR steel:
1. Maximized Uptime and 3x–5x Longer Service Life
The primary enemy of mining and construction equipment is sliding and impact wear caused by abrasive materials (rocks, sand, coal, and scrap metal). The martensitic microstructure of AR400 and AR500 steel provides exceptional resistance to gouging and scratching.
The Result: Wear liners and excavator buckets last 300% to 500% longer than those made of mild steel. This dramatically reduces the Mean Time Between Failures (MTBF) and minimizes costly unscheduled maintenance downtime.
2. Payload Optimization (The "Thinner but Stronger" Paradigm)
Higher hardness and yield strength allow engineers to design with thinner plates without sacrificing structural integrity.
The Result: By downgauging the steel thickness on a dump truck body or a tipper trailer from 10mm (mild steel) to 6mm (NM450 AR steel), you can shed thousands of pounds of "dead weight." This translates directly into higher payload capacity, better fuel efficiency, and a lower carbon footprint per haul.
3. Hardness Meets Superior Impact Toughness (No Brittle Fracture)
A common misconception is that "harder steel is more brittle." Standard AR steel plates undergo a precise Quenching and Tempering (Q&T) metallurgical process.
The Result: The quenching provides the extreme surface hardness (up to 600 HBW) to resist abrasion, while the tempering process restores the core toughness. This ensures the steel can absorb massive impact shocks (e.g., heavy boulders dropping into a hopper) without cracking or catastrophic brittle fracture.
4. Surprisingly Good Workshop Workability
Despite their extreme hardness, modern AR steel grades (specifically NM400 and NM450) are highly refined with low carbon equivalents (CEV).
The Result: They offer excellent cold formability and weldability. With the right workshop parameters, local fabricators can still cut, bend, and weld these plates using conventional methods, avoiding the need for expensive, specialized joining techniques.
Engineer's Tip: Are you currently replacing your A36 wear liners every 6 months?
Switching to an NM450 equivalent plate often pays for itself in less than a year through reduced maintenance labor and material replacement costs.
Which Abrasion-Resistant Wear Fighter Is Right for You?
Bigger hardness numbers don't always mean a better choice. The harder the steel, the harder it is to cut, bend, and weld in your workshop. Here is how to choose your wear fighter based on your specific fabrication needs:
1. The All-Rounder: AR400 / NM400
- Best for: Dump truck bodies, hoppers, silos, and conveyors.
- Why choose it: It offers excellent cold forming properties. If your fabrication process requires significant bending or rolling, 400 HBW steel will not crack easily during press braking.
2. The Upgraded Standard: AR450 / NM450
- Best for: Excavator buckets, cutting edges, and heavy-duty tipper trailers.
- Why choose it: It is the industry's "sweet spot." An extra 50 Brinell points provide significantly better wear life than 400, while still allowing for reasonable workshop workability.
3. The Heavy-Duty Brawler: AR500 / NM500
- Best for: Crusher liners, shredder knives, and mining screens.
- Why choose it: Built for extreme sliding wear and heavy impact. Note: Due to its extreme hardness, cold bending is highly restricted. It is typically used as flat wear plates bolted or welded onto structural frames.
Low Price NM450 NM400 NM500 NM550 10mm 12mm 15mm 16mm 6mm NM400 Wear Resistant Steel Plate Nm450 Wear Plate
Wear-resistant plate with high wear resistance and good impact performance is good, can be cutting, bending, welding, etc.,can adopt welding, plug welding, bolt connection way to connect with other structures, such as the scene of the maintenance process possesses the characteristics of time saving, convenient and widely used in metallurgy, coal, cement, power station,glass, mining, building materials, brick and petrochemical industry, compared with other materials, has a high cost performance,has been favored by more and more buyers.
Wear resistant steels are developed for applications where high wear resistant performance is required, such as dumper, garbage vehicle, concrete mixer truck, industrial air fan, hopper, crusher, machinery for coal, grain, cement, grab bucket, etc
(1) handling machinery and equipment: unloading mill chain plate, hopper liner, grab the edge plate, and automatic tipper tipping plate;
(2) of construction machinery equipment: Cement pusher plate, concrete mixer liner, mixing building lining board. Dust collector liner;
(3) metallurgical machinery equipment: iron ore sintering conveying elbow, iron ore sintering machine liner, scraper machine liner;
4) mining machinery and equipment: aggregate, stone crusher liner, blade;
(5) other mechanical equipment: sand barrel, blade, a variety of port machinery wear part;
(6) of thermal power equipment: coal mill lining board Coal, coal conveying pipe, coal distributor frame,unloading equipment lining plate;
(7) shot blasting machinery: shot blasting machine lining board;
(8) engineering machinery and equipment: loaders, bulldozers, excavators;
Beyond Raw Plates: Our Custom AR Steel Fabrication & Machining Services
Working with 400-600 HBW steel is notoriously difficult. It destroys standard drill bits, requires massive press brake tonnage, and demands strict thermal control during cutting.
Instead of struggling with tooling wear and local high labor costs, many OEMs and mining contractors send us their CAD drawings (.dwg or .dxf). GNEE Steel provides one-stop custom fabrication services, delivering ready-to-install wear parts directly to your assembly line.
1. Precision Profiling & Cutting (Minimizing the HAZ)
Thermal cutting of high-hard steel can alter its microstructure, creating a "soft edge" in the Heat-Affected Zone (HAZ). We utilize advanced cutting technologies to maintain the steel's core hardness:
Fiber Laser Cutting: Ideal for NM400/NM450 plates up to 20mm thick. Provides extreme precision (±0.2mm tolerance) with minimal HAZ, requiring zero post-cut edge machining.
High-Definition Plasma & Underwater Plasma: For plates up to 50mm. Cutting underwater significantly absorbs the heat, protecting the martensitic structure of AR500/AR600 from softening.
Oxy-Fuel (Flame) Cutting: Used for ultra-thick plates (up to 150mm). We apply strict pre-heating protocols (75°C - 150°C) prior to cutting to prevent hydrogen-induced delayed cracking.
2. Heavy-Duty Bending & Rolling
Bending AR steel requires huge machine power and an understanding of its massive "springback" effect.
Equipped with heavy-duty CNC press brakes (up to 3000 Tons), we can cold-bend NM400 and NM450 plates up to 50mm thick.
We calculate the exact minimum bending radius and utilize specialized bottom V-dies to prevent surface cracking during the forming of U-shaped truck beds and chute liners. (Note: NM500 and NM600 are generally not recommended for cold bending and are supplied as flat liners).
3. CNC Drilling, Countersinking & Tapping
Machining holes in 500 HBW steel is a nightmare for standard workshops.
We use specialized solid carbide and Cobalt-alloyed High-Speed Steel (HSS-Co) cutting tools running at high feed pressure and low RPM.
We can machine countersunk holes (perfect for plow bolts in wear liners), counterbored holes, and perform precise thread tapping for bolt-on replaceable wear plates.
Popular Ready-to-Install Wear Parts We Manufacture:
✅ Excavator Bucket Lips & Cutting Edges: Beveled and drilled to your OEM specs.
✅ Crusher Liner Plates: Boltable wear liners with countersunk holes.
✅ Dump Truck Bed Liners: Pre-bent and cut-to-size floor and side panels.
✅ Conveyor Chutes & Skirting: Rolled and welded wear-resistant assemblies.
At first, our main business is meatl material , with more and more customer cooperation , now we bought our own machine to provide cutting service to customer , we have 1 set 12000w fiber laser cutting machine , 1 set 6000 fiber laser cutting mahcine , 2 set plasma machine , 1 set bending machine , 1 set Sandblasting machine to clean the rust , and have a smaller painting room .
1).Competitive Price directly from the original manufacturer.
2).Professional QC and R&D teams to assure high quality;
3). Short lead time for building molds and manufacturing mass production;
4). Advanced measurement equipment
5). Small quantity order also is welcomed.
6).We do OEM works, as per your drawings, samples or ideas.
7).Rich experience and good technology support (have more than 10 years experience in mould design , mould manufacturing and injection).
Which Abrasion-Resistant Wear Fighter Is Right for You?
Bigger hardness numbers don't always mean a better choice. The harder the steel, the harder it is to cut, bend, and weld in your workshop. Here is how to choose your wear fighter based on your specific fabrication needs:
1. The All-Rounder: AR400 / NM400
Best for: Dump truck bodies, hoppers, silos, and conveyors.
Why choose it: It offers excellent cold forming properties. If your fabrication process requires significant bending or rolling, 400 HBW steel will not crack easily during press braking.
2. The Upgraded Standard: AR450 / NM450
Best for: Excavator buckets, cutting edges, and heavy-duty tipper trailers.
Why choose it: It is the industry's "sweet spot." An extra 50 Brinell points provide significantly better wear life than 400, while still allowing for reasonable workshop workability.
3. The Heavy-Duty Brawler: AR500 / NM500
Best for: Crusher liners, shredder knives, and mining screens.
Why choose it: Built for extreme sliding wear and heavy impact. Note: Due to its extreme hardness, cold bending is highly restricted. It is typically used as flat wear plates bolted or welded onto structural frames.
Sourcing AR Steel? Targeted FAQ for Procurement & Engineers
Q1: Can Chinese NM500 replace Hardox 500 in heavy mining equipment?
A: Yes, absolutely. Chinese NM (Nai Mo) series steel plates share a nearly identical chemical composition (Boron-added, Q&T processed) to European brands. While top-tier European brands may hold a slight edge in extreme low-temperature impact tests, for 90% of general wear applications (like truck beds and crusher liners), switching to NM500 can reduce your material costs by 20% to 30% without sacrificing service life.
Q2: Can I weld AR450 or AR500 steel plates?
A: Yes, but it requires strict thermal control. Because of the high carbon equivalent (CEV), you must use low-hydrogen consumables (e.g., E7018 electrodes). For thicker plates (typically > 20mm), pre-heating to 75°C - 150°C is mandatory to prevent hydrogen-induced cold cracking in the weld heat-affected zone (HAZ).
Q3: How do you cut abrasion-resistant steel? Will cutting ruin the hardness?
A: AR steel can be cut using plasma, laser, or oxy-fuel. However, thermal cutting creates a Heat-Affected Zone (HAZ) where the edge loses its hardness. To minimize this "soft edge," we recommend underwater plasma cutting or laser cutting. For mechanical drilling, always use high-speed steel (HSS) with cobalt coating, run at low RPM, and apply high feed pressure.
Q4: Do you offer cut-to-size and bending services for AR plates?
A: Yes. We understand that many local workshops lack the high-tonnage press brakes required to bend NM450/NM500 plates. GNEE Steel provides CNC plasma cutting, drilling, and heavy-duty press braking services. You can import ready-to-assemble wear parts directly from us to save on local labor and machining costs.
Stop overpaying for brand-name wear plates. Maximize your equipment's uptime and your profit margins today.
Send us your drawings or required specifications (Hardness, Thickness, Width). Our metallurgical team will provide the latest NM400/NM500 factory price list and customized machining solutions within 24 hours.
📧 [Get an Instant Quote & MTC Sample Now]
Facing Extreme Sliding Abrasion? Upgrade to Chromium Carbide Overlay (CCO) Plates
Standard Quenched & Tempered (Q&T) AR steel plates (like NM500) are excellent for a balance of impact and sliding wear. However, when your equipment handles highly abrasive materials like crushed glass, clinker, or silica sand under severe sliding conditions, even 500 HBW steel might wear out too fast.
For these extreme environments, GNEE Steel provides Chromium Carbide Overlay (CCO) Wear Plates (also known as Bimetallic Wear Plates).
What is a CCO Plate?
Instead of a homogenous steel plate, a CCO plate consists of two distinct layers:
The Base Plate: A mild carbon steel backing (e.g., Q235B or ASTM A36) that absorbs mechanical shock and allows for easy welding, bolting, and forming.
The Hardfaced Overlay: A highly alloyed deposit of chromium carbides (Cr7C3) welded onto the base plate. This overlay achieves a staggering surface hardness of 58-62 HRC (approx. 600-700 HBW).
Quick Comparison: Standard AR Steel vs. CCO Wear Plate
| Feature | Q&T AR Steel (e.g., NM500) | CCO Wear Plate (Hardfaced) |
| Best Wear Type | Heavy Impact + Sliding Abrasion | Extreme Sliding Abrasion (Low/Medium Impact) |
| Surface Hardness | 450 - 550 HBW | 58 - 62 HRC (equivalent to 600+ HBW) |
| Wear Life | 3x - 5x longer than mild steel | Up to 5x longer than AR500 steel |
| Weldability & Installation | Requires low-hydrogen pre-heating | Very easy (weld directly onto the mild steel base) |
| Typical Applications | Excavator buckets, dump truck beds | Cement chutes, coal hoppers, exhaust fan blades |
Note: The visible relief cracks on the surface of CCO plates are a natural result of the hardfacing process and do not affect the plate's structural integrity. In fact, they relieve internal welding stress.
Custom CCO Fabrication
We don't just supply standard 1500x3000mm CCO sheets. Our facility is equipped to roll, cut, and fabricate CCO plates into complex wear parts, including wear pipes, elbows, and cyclone liners, ensuring your plant minimizes downtime.
WEAR-RESISTANT STEEL PLATE
|
Model |
HRC |
Working Temperature |
Alloy Chemical Composition |
Specification and thickness Standard size 1400*3000 1500*3000 2000*3000 |
|||||
|
C |
Cr |
Mn |
Nb |
others |
|||||
|
HP100 |
60-63 |
＞500℃ |
3-5 |
22-28 |
48 |
3+3,4+4,5+5,6+4,6+5, 6+6,8+4,8+5,8+6,8+7, 8+8,10+4,10+5,10+6, 10+7,10+8,10+9,10+10,10+20,12+4,12+5,12+6,12+7,12+8,12+9,12+1, 12+11,12+12, 12+17, 12+25,14+6,14+8, 14+10,16+6,16+8, 16+10,18+6,18+8, 18+10,20+5,20+6,20+8,20+10,20+20 |
|||
|
HP200 |
58-62 |
＞500℃ |
3-5 |
20-26 |
1-3 |
2-5 |
|||
|
HP300 |
60-65 |
＞800℃ |
4-6 |
18-25 |
2-3 |
5-8 |
3-6 |
||
|
HP400 |
50-55 |
＞500℃ |
0.4-2 |
3-7 |
15-20 |
2-5 |
|||
|
Industry Application |
Power industry |
Coal hopper lining plate, coal drop pipe liners, coal mill wear parts, ash pipeline, fan blade |
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|
Iron and steel industry |
Bin liner, skip car liner, vibrating feeder lining, CDQ tank lining, coke-barrier car bottom plate, slag sluice lining |
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Cement industry |
Raw mill lining, clinker chute lining, dust discharge pipe, guide vane, roller protection sleeve, slag mill wear parts |
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Glass industry |
Blender mixer bottom plate, fan blade, fore and rear discs of fan impeller, quick-wearing wear parts |
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Mining industry |
Excavator bucket liners, bucket-wheel excavator, scarper conveyor middle trough, elevator skip, hopper liner |
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Engineering industry |
Shield machine wear parts, boring machine shovel plate, loader shovel plate, dump truck body plate. |
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Port |
Loading and discharging machine, wear-resistant pipeline, channel dredging, bin liner |
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we also customize various specification wear-resistant plate and wear parts according to customer requirement and drawings. |
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GNEE group team photo
GNEE group customer visit
Products Description
Need Raw Plates or Ready-to-Install Wear Parts?
At GNEE Steel, we don't just supply steel plates. We are a heavy-duty fabrication center. Whether your blueprints strictly specify imported JFE EVERHARD™ EH450 or you want to optimize costs with NM450 equivalents, we have the inventory and CNC machining capabilities to cut, drill, and bend it to your exact CAD drawings.
📩 [Send Your Drawings for an Instant Quote & MTC Sample Today]
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