NM450 Wear Resistant Steel Plate — Factory Direct Supplier | Huaxia-Steel
NM450 wear resistant steel plate is a high-hardness abrasion-resistant plate designed to survive harsh sliding and impact wear. With a typical Brinell hardness around 450 HBW, NM450 extends the service life of buckets, liners, chutes and truck beds far beyond ordinary carbon steel. Huaxia-Steel supplies NM450 plates and cut parts with mill hardness certificates and fabrication support.
Product Overview
NM450 is a Chinese wear-plate grade (GB/T 24186) with a martensitic or bainitic microstructure that delivers high surface hardness while retaining enough toughness to resist cracking. It is the right choice when equipment faces continuous abrasion from ore, gravel, coal or scrap, and where downtime to replace worn parts is expensive.
Specification Table
| Item | Range / Value |
|---|---|
| Standard | GB/T 24186 (NM series) |
| Hardness | 420 – 480 HBW (NM450) |
| Thickness | 6 – 100 mm |
| Width | 1500 – 3000 mm |
| Length | 6000 – 12000 mm |
| Tensile strength | >=1250 MPa |
| Form | Plate, wear liner, cut part |
Available Grades
- NM400 (softer, more formable)
- NM450 (balanced wear/impact)
- NM500 (max hardness)
- Chromium carbide overlay on request
Manufacturing Standards
Made to GB/T 24186 wear-resistant steel plate standard. Hardness is verified per heat and reported on the mill certificate. Equivalent grades include Hardox 450 and JFE EH450 for specification cross-reference, so an enquiry written to a branded wear plate can be met with NM450.
Applications
- Excavator and loader buckets
- Crusher liners and screens
- Chutes and hoppers
- Truck and trailer beds
- Mining and quarry equipment
- Wood and recycling machinery
Quality Assurance
Each plate is Brinell hardness tested and supplied with a hardness certificate. Flatness, thickness and surface are inspected before dispatch. Third-party verification is available, and we keep heat traceability from mill to packed plate.
Packaging and Shipping
Plates are bundled, edge-protected and seaworthy packed for export. We offer cutting, bending and welding services and ship FOB, CIF or CFR worldwide, with the option to supply cut-to-shape liners ready for assembly.
Weldability of Wear Plate
NM450 welds with low-hydrogen electrodes and a preheat of 100-150 C depending on thickness. Use buffer (mild steel) layers for attaching to mild steel structures, and avoid welding the hard face directly. Proper procedure prevents cracking at the heat-affected zone.
Cutting and Processing
Plasma or laser cutting is standard; avoid oxy-fuel on the hard face. For holes and complex shapes, use CNC cutting and then light grinding. We can supply cut wear liners to drawing so the plate arrives ready to bolt or weld into the equipment.
Hardness vs Toughness Trade-off
Higher hardness (NM500) lasts longer against pure sliding wear but is less tolerant of heavy impact. NM450 balances the two, making it the default for mixed wear. Choose NM400 where impact and forming dominate, and NM500 where abrasion is extreme and impact is low.
Selection vs NM400 / NM500
| Grade | Hardness HBW | Best when |
|---|---|---|
| NM400 | 360-440 | Impact and forming dominate |
| NM450 | 420-480 | Mixed wear and impact |
| NM500 | 470-530 | Severe sliding abrasion |
Picking the right hardness grade is the single biggest lever on part life and cost; we help match the grade to your actual wear mode.
NM450 vs Overlay Plate
Solid NM450 is best for moderate-to-severe sliding wear where you want uniform hardness through the thickness. Chromium carbide overlay plate wins for extreme abrasion with light impact because the hard facing is thicker, but it is heavier and harder to form. Choose solid wear plate for structure, overlay for pure wear faces.
Service Life Expectations
Versus mild steel, NM450 typically lasts 3-5 times longer in abrasive service, which dwarfs its price premium through reduced downtime and fewer change-outs. The exact gain depends on the wear mode; we help map your duty to the right grade and thickness so the saving is real, not assumed.
Machining and Drilling Notes
Drill with carbide or cobalt bits at reduced speed and good coolant; the hard face blunts ordinary HSS quickly. Countersink and chamfer edges to avoid spalling. For holes, pre-drill the mild-steel backing if clad, and avoid heating the plate which can soften the hard layer.
Typical Order and Lead Time
NM450 plates are stocked in common thicknesses or cut to order. Stock ships in 10-25 days; cut parts and special sizes in 20-40 days. MOQ is usually one plate for stock or a small lot for custom. Send the wear-part drawing and we return plates or cut liners ready to fit.
Why Buy NM450 from Us
We supply certified hardness, cut to shape, with the fabrication advice to make it last. Buying wear plate on price alone risks the wrong grade; we match the grade to your wear mode and back it with a hardness certificate and traceable heat.
NM450 vs Mild Steel Life Comparison
In abrasive duty, NM450 typically outlasts mild steel 3-5 times, and the downtime saved on change-outs often exceeds the price gap several times over. Map your wear rate to quantify the return before choosing; for low-wear spots, mild steel may still be the better economics.
Common Defects and Checks
Verify hardness with a portable Brinell or Leeb tester on arrival, and check flatness and edge condition. Reject plates with soft spots or cracks at the hard face. Keep the hardness certificate and correlate it with the tester reading for confidence.
Plate vs Overlay: Final Note
Use solid NM450 for structural wear members and load-bearing liners. Use overlay plate where abrasion is extreme and impact low, and where you can weld the hard face to a mild-steel backing. The right pick depends on the exact duty, not a single rule.
Industries We Serve
- Mining and quarrying
- Cement and aggregate
- Recycling and waste
- Construction equipment
- Agricultural machinery
- Material handling
NM450 Quality Plans and Inspection
For NM450 we verify Brinell hardness on arrival with a portable tester and cross-check it against the mill certificate, then inspect flatness, edge condition and surface. Reject plates with soft spots, cracks at the hard face or heavy edge damage, and keep the certificate tied to the heat so any claim is straightforward.
Working With a Direct Supplier
A direct wear-plate supplier gives you certified hardness, cut-to-shape service and the fabrication advice that makes the plate last. We match the grade to your wear mode rather than selling on price alone, and we back every plate with a traceable heat and a hardness certificate you can show your maintenance team.
Sustainability and Compliance
NM450 is supplied with standard mill documentation, and we ensure export packing meets destination requirements including ISPM-15 for any wooden materials. If your procurement scores supplier compliance, ask for the relevant statements when you place the order.
Ordering NM450: Tips for a Smooth Purchase
Confirm thickness, width, length, hardness class and any cutting or forming before quoting, and state GB/T 24186 plus the hardness certificate requirement. Tell us your wear mode so we can recommend NM450 versus NM400 or NM500, and confirm lead time for stock plate versus cut parts.
Our Commitment to Export Buyers
We commit to certified hardness, cut-to-shape service, seaworthy packing and clear documentation, and to backing every plate with a traceable heat. For NM450, that means you receive wear plate that is proven, not assumed, to perform in your duty.
NM450 Cutting Tips
Cut NM450 with plasma or laser; avoid oxy-fuel on the hard face, which can soften it. For holes and complex shapes use CNC cutting then light grinding. Keep cut edges cool and deburred so they do not spall, and plan the cut layout to minimize waste from this harder, more expensive plate.
NM450 Welding Tips
Weld with low-hydrogen electrodes and a preheat of 100-150 C by thickness; use a mild-steel buffer layer when attaching to structural steel, and avoid welding the hard face directly. Correct procedure prevents heat-affected-zone cracking and keeps the wear surface intact where it does the work.
NM450 Summary and Next Step
NM450 wear plate is the balanced choice for mixed abrasion and impact, with certified hardness and cut-to-shape service that extends equipment life. Share your wear mode and part drawing, and we will recommend the right grade and thickness and return plates or liners ready to fit. Ask for a hardness certificate and a quote to compare against mild steel life-cycle cost.
NM450 Wear Plate: Lead Time and MOQ Recap
Stock thicknesses ship in 10-25 days; cut parts and special sizes in 20-40 days, usually from a single plate minimum. We cut to shape, verify hardness and pack for export. Share your wear-part drawing and monthly volume and we will quote lead time and price, and recommend the grade that maximizes service life.
NM450 Wear Plate: Life-Cycle Recap
Over a full service life, NM450 typically outlasts mild steel several times in abrasive duty, and the avoided downtime and change-outs usually repay the premium many times over. Specify the grade by your actual wear mode, verify hardness on arrival, and cut to shape so the plate goes straight into the equipment. That is how wear plate becomes a saving rather than a cost.
Request a Quote for Carbon Steel
Huaxia-Steel supplies a full range of carbon steel products with mill test certificates, third-party inspection and flexible export terms (FOB, CIF, CFR, DDP). Tell us your grade, size and quantity, and our team will return a competitive quote with lead time within 24 hours. Email [email protected] or use the contact form to start your order.
