Chinese NM300 Abrasion Resistant Steel Plate
Chinese NM300 high strength abrasion resistant steel plate — engineered for wear resistance in dump trucks, excavators, buckets, and heavy equipment. Meets GB/T 24186-2022 standard.
If you are dealing with abrasion, impact, and daily wear on equipment, you already know that ordinary steel plates simply don’t last. Choosing the right wear resistant steel plate is not just about specifications — it directly affects your maintenance cost, downtime, and overall efficiency.
NM300 wear resistant steel plate is widely used in mining equipment, construction machinery, and material handling systems. With a hardness around 300 HB, it gives you a practical balance: strong enough to resist wear, but still workable for cutting, bending, and welding. That means you don’t just get durability — you also get flexibility in fabrication.
In real projects, many buyers choose NM300 not because it is the hardest grade, but because it is the most cost-effective wear resistant steel plate for medium-wear applications. Whether you are manufacturing excavator buckets, liners, hoppers, or dump truck bodies, NM300 helps you extend service life without overpaying for unnecessary hardness.
As a NM300 steel plate supplier in China, we have supplied wear resistant steel plates to customers in Southeast Asia, the Middle East, and Africa. We understand what matters to you: stable quality, accurate thickness, and reliable delivery time. You are not just buying steel — you are making sure your equipment keeps running.
If you are comparing different grades or looking for a NM300 steel plate supplier, feel free to reach out. We can help you choose the right material based on your actual working conditions.
Extended Service Life
270-330 HBW hardness delivers 3-5x longer wear life versus structural steel.
High Strength
Tensile strength ≥1000 MPa, impact toughness -20°C ≥24J.
Excellent Workability
Can be cut, bent, and welded using standard workshop practices.
Decoding the Grade: NM300
International Standards & Comparisons
NM300 / NM300D/E
C ≤0.23, Si ≤0.70, Mn ≤1.60, P ≤0.025, S ≤0.015
Hardness: 270~330 HBW
Tensile: ≥1000 MPa
Hardox 400
C 0.20-0.25, Cr ≤1.2, Ni ≤0.8, B ≤0.004
Hardness: 370~430 HBW
JFE EH360 / YMP360
C ≤0.20, Cr 0.5-1.0, Ni ≤0.5
Hardness: 330~390 HBW
XAR 400
C ≤0.22, Cr ≤1.2, Ni ≤0.8, Mo ≤0.3
Hardness: 360~440 HBW
AR400 / AR400F
C 0.18-0.25, Cr 0.50-1.20, Mo 0.20-0.50
Hardness: 360~440 HBW
Note: NM300 provides a cost-effective balance of hardness and weldability for medium-duty wear applications.
Domestic Grade Comparison (NM300 / NM300D / NM300E)
Base Grade / General Wear Applications
Composition: C ≤0.23, Mn ≤1.60, P ≤0.025, S ≤0.015
Hardness: 270~330 HBW (≤80mm)
Tensile: ≥1000 MPa (by agreement)
D Grade / -20°C Impact Toughness
Impact: ≥24J @ -20°C (Longitudinal)
CEV ≤0.45 (≤50mm)
C ≤0.23, P ≤0.020, S ≤0.010
E Grade / -40°C Impact Toughness
Impact: ≥24J @ -40°C (Longitudinal)
CEV ≤0.45 (≤50mm)
Same strict composition as D grade
According to GB/T 24186-2022, NM300D and NM300E are low-temperature impact grades. D grade guarantees impact toughness ≥24J at -20°C, E grade guarantees ≥24J at -40°C.
Why Choose NM300 Wear Plate?
Premium Durability
Optimized alloy design ensures exceptional wear resistance.
High Impact Toughness
≥24J at -20°C (D grade) or -40°C (E grade), ideal for cold climates.
Excellent Fabrication
Easy cutting, bending, and welding.
Typical Applications
Mining & Quarrying
Dump truck bodies, chutes, crusher liners
Construction Equipment
Excavator buckets, loader buckets, bulldozer blades
Heavy Transport
Tipper truck bodies, dump truck liners, trailer floors
Material Handling
Conveyor chutes, transfer points, silos, hoppers
Customization Services
Contact us for custom requirements — no minimum order restrictions!
Available Stock Sizes
| Thickness (mm) | Width (mm) | Length (mm) | Stock Status |
|---|---|---|---|
| 6 - 12 | 1500 - 2500 | 6000 - 12000 | ✓ In Stock |
| 14 - 25 | 2000 - 2800 | 8000 - 12000 | ✓ In Stock |
| 30 - 50 | 2000 - 3000 | 8000 - 12000 | ✓ In Stock |
| 55 - 80 | 2000 - 3000 | 6000 - 10000 | Made to Order |
NM300 Chemical Composition (GB/T 24186-2022)
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | B | Als |
|---|---|---|---|---|---|---|---|---|---|---|
| NM300 (max) | ≤0.23 | ≤0.70 | ≤1.60 | ≤0.025 | ≤0.015 | ≤0.80 | ≤0.50 | ≤0.40 | 0.0005-0.006 | ≥0.010 |
| NM300D/E (max) | ≤0.23 | ≤0.70 | ≤1.60 | ≤0.020 | ≤0.010 | ≤0.80 | ≤0.60 | ≤0.40 | 0.0005-0.006 | ≥0.015 |
| NM300 (typical) | 0.20 | 0.55 | 1.45 | 0.018 | 0.008 | 0.60 | 0.40 | 0.25 | 0.0015 | 0.025 |
NM300 Mechanical Properties
| Grade | Thickness | Tensile (MPa) | Elongation % | Impact (J) | Hardness HBW |
|---|---|---|---|---|---|
| NM300 | ≤80mm | ≥1000* | ≥14* | — | 270~330 |
| NM300D/E | ≤80mm | ≥1000 | ≥14 | ≥24J (D:-20°C / E:-40°C) | 270~330 |
| NM300 (optional) | 80~120mm | ≥950 | ≥12 | ≥21 | 270~340 |
*Value by agreement. Standard NM300 guarantees Brinell hardness.
Technical FAQ
SMAW, GMAW, FCAW. Less than 20mm no preheat, over 20mm preheat 100-150°C.
Transverse: 3t-4t, Longitudinal: 4t-5t.
Plasma, laser (≤20mm), waterjet.
≤40mm uniform, 40-80mm slight core decrease.
Continuous ≤250°C, short peaks ≤300°C.
D grade: ≥24J @ -20°C; E grade: ≥24J @ -40°C.
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