Conquest Steel & Alloys supplies NM 400 abrasion wear resistant steel plates engineered for industries where equipment surfaces face constant contact with rock, ore, sand, and other hard, granular material. These are hot-rolled, quenched-and-tempered steel plates carrying a Brinell hardness of 360–440 HBW — a hardness level reached through controlled heat treatment that mild steel and standard structural plates cannot match. NM 400 plates are supplied in thickness from 1.2mm to 300mm, in widths up to 4020mm and lengths up to 18000mm, manufactured to JIS G4051, GB711, YB/T107, and ASTM standards. Mechanical testing confirms a minimum yield strength of 1000 MPa, tensile strength of 1250 MPa, 10% minimum elongation, and Charpy V-notch impact energy of 45J at -40°C — properties that give the plates both wear resistance and resistance to cracking under impact loads. These plates are specified for chute liners, hopper walls, crusher liners, screen decks, bulldozer blades, excavator buckets, dump truck bodies, and conveyor wear points across mining, construction, coal handling, metallurgy, and concrete production. Where mild steel liners wear through in weeks under continuous abrasive load, NM 400's higher hardness extends service intervals and reduces unplanned equipment downtime. NM 400 plates are available in Soft, Quarter Hard, Half Hard, Hard, and Spring Hard variants, allowing fabricators to choose the right balance of formability and wear resistance for their specific liner or component design. The plates also retain good weldability, so they can be cut, formed, and welded into liners and custom wear parts using standard fabrication equipment. Conquest Steel & Alloys manufactures and stocks NM 400 plates in Mumbai with pan-India delivery, supplying mill test certificates with every order. Sizes and specifications are supplied to client requirements at competitive, transparent pricing.Request a quote or technical data sheet from Conquest Steel & Alloys today.
NM 400 plates are quenched-and-tempered, high-hardness steel plates engineered to resist surface wear from abrasive materials like rock, ore, sand, and coal. They carry a Brinell hardness rating of 360–440 HBW, achieved through controlled quenching and tempering during manufacturing.
The name "NM 400" refers to the nominal hardness target of 400 HBW at the plate surface. This hardness is what allows the steel to resist gouging, scratching, and material loss when abrasive loads pass over or through it repeatedly — a property standard mild steel or hot-rolled coil cannot match.
Conquest Steel & Alloys supplies NM 400 plates conforming to JIS G4051, GB711, YB/T107, and ASTM standards, giving fabricators and OEMs a globally recognized specification to design against.
NM 400 plates are specified wherever equipment surfaces face continuous friction from hard, granular, or abrasive material. Typical applications include:
Each application involves repeated contact between the steel surface and abrasive material — the exact wear mechanism NM 400 is engineered to resist.
NM 400 plates directly reduce unplanned downtime and replacement costs in abrasive-service equipment. When a chute liner, bucket edge, or crusher liner wears through, the equipment stops — and in mining or bulk material handling, stoppages are measured in lakhs of rupees per hour of lost throughput.
Standard mild steel liners in high-abrasion zones can wear out in weeks. NM 400's higher hardness extends service life significantly compared to mild steel, which means:
For plant engineers designing or refurbishing material-handling equipment, specifying the correct abrasion-resistant grade upfront is a direct lever on operating cost.
NM 400 plates are supplied in several hardness and finish variants depending on application severity:
| Type | Description | Typical Use |
|---|---|---|
| Soft | Lower relative hardness within the NM 400 band, easier to cold-form | Liners requiring bending/forming |
| Half Hard | Mid-range hardness, balanced formability and wear resistance | General chute and hopper liners |
| Quarter Hard | Slight hardness increase over soft grade | Moderate abrasion applications |
| Hard | Full hardness target (360–440 HBW), minimal forming required | Crusher liners, high-wear zones |
| Spring Hard | Highest relative hardness/temper in the range | Severe, continuous abrasive contact |
Conquest Steel & Alloys advises on the correct variant based on your application's abrasion severity, forming requirements, and welding method.
| Grade | Yield (Min MPa) | Tensile (MPa) | Elongation (Min %) | Charpy V Impact (Longitudinal, -40°C) |
|---|---|---|---|---|
| NM 400 | 1000 | 1250 | 10 | 45 J |
These mechanical properties ensure NM 400 steel plate solutions from Conquest Steel & Alloys perform reliably even under extreme stress and repeated impact loading.
| Thickness (mm) | C (max%) | Si (max%) | Mn (max%) | P (max%) | S (max%) | Cr (max%) | Ni (max%) | Mo (max%) | B (max%) | CEV (typ) | CET (typ) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3–8 | 0.15 | 0.7 | 1.6 | 0.025 | 0.01 | 0.3 | 0.25 | 0.25 | 0.004 | 0.33 | 0.23 |
| 8–20 | 0.15 | 0.7 | 1.6 | 0.025 | 0.01 | 0.5 | 0.25 | 0.25 | 0.004 | 0.37 | 0.27 |
| 20–32 | 0.18 | 0.7 | 1.6 | 0.025 | 0.01 | 1.0 | 0.25 | 0.25 | 0.004 | 0.48 | 0.29 |
| 32–45 | 0.22 | 0.7 | 1.6 | 0.025 | 0.01 | 1.4 | 0.5 | 0.6 | 0.004 | 0.57 | 0.31 |
| 45–51 | 0.22 | 0.7 | 1.6 | 0.025 | 0.01 | 1.4 | 0.5 | 0.6 | 0.004 | 0.57 | 0.38 |
| 51–80 | 0.27 | 0.7 | 1.6 | 0.025 | 0.01 | 1.4 | 1.0 | 0.6 | 0.004 | 0.65 | 0.41 |
| 80–130 | 0.32 | 0.7 | 1.6 | 0.025 | 0.01 | 1.4 | 1.5 | 0.6 | 0.004 | 0.73 | 0.48 |
This balanced chemical composition — particularly the controlled carbon and chromium content — enhances wear resistance while preserving toughness, making NM 400 suitable for high-impact, high-abrasion applications.
Experience: Conquest Steel & Alloys has supplied abrasion-resistant and specialty steel plates to mining, construction, and fabrication clients across India, with a manufacturing and stocking base in Mumbai and pan-India delivery capability.
Expertise: Every NM 400 plate is produced with precise, verifiable specifications — hardness range, chemical composition, and Charpy impact values — not vague marketing claims. Our technical team helps fabricators select the correct hardness variant (Soft through Spring Hard) for their forming and welding needs.
Authoritativeness: Plates are manufactured to internationally recognized standards — JIS G4051, GB711, YB/T107, and ASTM — so specifying engineers and procurement teams can validate compliance against known benchmarks.
Trust: Conquest Steel & Alloys provides mill test certificates with every shipment, transparent pricing on enquiry, and a straightforward quote-to-delivery process across thickness ranges from 1.2mm to 300mm, in any size the client requires.
Whether you need a single trial plate or a bulk order for a fabrication line, Conquest Steel & Alloys delivers NM 400 plates at competitive, reasonable prices with the documentation your quality team needs.
What is the hardness of an NM 400 plate?
NM 400 plates have a Brinell hardness rating of 360–440 HBW, achieved through quenching and tempering during manufacturing.
What is the difference between NM 400 and mild steel plates?
NM 400 plates undergo quenching and tempering to reach 360–440 HBW hardness, while mild steel typically ranges around 120–150 HBW. This difference means NM 400 lasts significantly longer in abrasive-wear applications like chute liners and crusher parts.
Can NM 400 plates be welded?
Yes. NM 400 plates offer good weldability due to controlled carbon equivalent (CEV) values, allowing standard fabrication techniques to be used for liners, buckets, and structural wear components, though preheat requirements increase with thickness.
What thickness range does Conquest Steel & Alloys supply for NM 400 plates?
Conquest Steel & Alloys supplies NM 400 plates from 1.2mm to 300mm thick, in widths up to 4020mm and lengths up to 18000mm, cut to client specifications.
Which industries use NM 400 abrasion resistant plates?
NM 400 plates are used in mining machinery, construction equipment, coal handling plants, metallurgy, concrete production, and conveyor systems — anywhere equipment surfaces face continuous abrasive contact.
Does Conquest Steel & Alloys provide mill test certificates with NM 400 plates?
Yes. Every NM 400 plate shipment includes mill test certificates confirming chemical composition and mechanical properties, so buyers can verify compliance with JIS, GB, YB/T, and ASTM standards.
Choosing the right abrasion-resistant steel isn't a minor spec decision — it directly determines how often your equipment goes down for liner replacement and how much that downtime costs your operation. NM 400 abrasion wear resistant steel plates are built specifically to answer that problem: a Brinell hardness of 360–440 HBW, achieved through precise quenching and tempering, gives these plates the wear resistance to outlast mild steel in chutes, hoppers, crusher liners, and heavy equipment components, while retaining enough toughness (45J Charpy impact at -40°C) to resist cracking under sudden impact loads.
Conquest Steel & Alloys manufactures NM 400 plates to JIS G4051, GB711, YB/T107, and ASTM standards, in thicknesses from 1.2mm to 300mm and widths up to 4020mm, so fabricators and procurement teams can specify exactly what their equipment design requires — without compromising on documented, certified quality. Every plate ships with mill test certificates, and our technical team is available to help you select the right hardness variant, whether that's a formable "Soft" grade for liner fabrication or a full "Spring Hard" grade for the most severe abrasion zones.
If your mining, construction, coal handling, or fabrication operation is losing hours to liner failure or premature wear, it's worth reviewing your current material spec against NM 400.
Request a quote from Conquest Steel & Alloys today, or contact our team directly for bulk order pricing and a technical data sheet tailored to your application. Our Nashik-based sales desk responds to enquiries promptly and can advise on the right plate size, thickness, and hardness grade for your equipment.
Get NM 400 abrasion resistant steel plates matched to your application's hardness, thickness, and fabrication requirements. Conquest Steel & Alloys offers pan-India delivery, mill test certification with every order, and pricing built around your order volume and specification.
Request a quote, ask for a technical data sheet, or speak with our materials team today.
| Parameter : | Detail |
|---|---|
| Item : | NM 400 Abrasion Resistant Plate |
| Thickness : | 1.2mm – 300mm |
| Length : | 50mm – 18000mm |
| Width : | 50mm – 4020mm |
| Production Process : | Hot-Rolled (HR) |
| Standard : | JIS G4051, GB711, YB/T107, ASTM |
| Hardness Variants : | Soft, Half Hard, Quarter Hard, Hard, Spring Hard |
| Heat Treatment : | Normalized (N), Quenched & Tempered (Q+T) |
| Applications : | Concrete industry, metallurgy, fan industry, coal industry, mining machinery, construction machinery |
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