NM400 NM500 Wear Resistant Carbon Steel Coil 4mm-20mm Thickness for Heavy Machinery
Product Spotlights
As a professional manufacturer from Hemaokang Steel (Shandong) Co., Ltd., we are proud to introduce our NM400 & NM500 Wear Resistant Carbon Steel Coil with thickness ranging from 4mm to 20mm. Designed specifically for heavy machinery applications, these coils offer exceptional hardness and abrasion resistance, ensuring long service life under extreme operating conditions. Backed by our ISO 9001 quality management system and an annual export value exceeding US$50 million, we deliver reliable steel solutions to customers worldwide.
Our NM400 and NM500 steel coils are manufactured using advanced controlled rolling and heat treatment processes, resulting in a uniform microstructure and consistent Brinell hardness. The materials are widely used in industries such as mining, construction, and heavy equipment manufacturing, where wear and impact are constant challenges. With a thickness range of 4mm to 20mm, these coils can be processed into various wear-resistant components like excavator buckets, dump truck liners, crusher parts, and conveyor chutes.
Key Features & Benefits
- Superior Abrasion Resistance: NM400 delivers 360-470 HB, NM500 delivers 450-540 HB, effectively reducing wear and extending equipment life.
- Excellent Formability & Weldability: Low carbon content and optimized alloy design allow for cutting, bending, and welding without compromising hardness.
- Consistent Thickness Control: Strict tolerance (±0.5mm for 4-10mm, ±1.0mm for 10-20mm) ensures uniform performance in fabrication.
- Wide Application Range: Suitable for heavy machinery, mining, cement plants, and steel mills.
- Customizable Widths: Available from 1000mm to 2500mm, with custom dimensions upon request.
- Reliable Supply Chain: Located in Liaocheng, Shandong, with convenient port of shipment from Qingdao, ensuring timely delivery.
Technical Specifications
| Parameter | NM400 | NM500 |
|---|---|---|
| Brinell Hardness (HB) | 360 – 470 | 450 – 540 |
| Thickness Range | 4mm – 20mm | 4mm – 20mm |
| Width Range | 1000mm – 2500mm | 1000mm – 2500mm |
| Yield Strength (min) | 1000 MPa | 1100 MPa |
| Tensile Strength (min) | 1250 MPa | 1400 MPa |
| Elongation (min) | 10% | 8% |
| Impact Test | -20°C, ≥40 J | -20°C, ≥30 J |
The above data are typical values and may vary slightly depending on specific production lots. We provide a Material Test Certificate with each shipment to ensure full traceability and compliance with your requirements.
Why Choose Hemaokang Steel?
- ISO 9001 Certified – Our quality management system ensures consistent product excellence.
- Global Reach – Annual export value of US$50-100 million, serving markets in North America, South America, Europe, Asia, Africa, and Oceania.
- Experienced Team – 51-100 skilled employees dedicated to production, quality control, and customer service.
- Flexible Order Quantities – From small trial orders to large container loads, we accommodate your needs.
- Fast Delivery – Stock available for common sizes; production lead time 15-30 days for custom orders.
We understand that heavy machinery parts face extreme wear and tear. That is why our NM400 and NM500 coils are engineered to deliver prolonged service life and reduced maintenance costs. By choosing Hemaokang Steel, you are partnering with a reliable manufacturer that prioritizes quality, precision, and customer satisfaction.
Frequently Asked Questions
Q1: What is the difference between NM400 and NM500?
A: The main difference is hardness. NM400 offers 360-470 HB, suitable for moderate wear conditions. NM500 offers 450-540 HB, for severe abrasion environments. Both are excellent for heavy machinery, but NM500 provides higher wear resistance at the expense of slightly lower impact toughness.
Q2: Can these coils be welded or cut without losing hardness?
A: Yes, they have good weldability and formability. We recommend using low-hydrogen electrodes or welding wires and preheating for thicker sections. The hardness in the heat-affected zone may decrease slightly, but overall performance remains high.
Q3: What is the typical width and length of the coil?
A: Standard width is 1500mm, but we can supply from 1000mm to 2500mm. Coil weight typically ranges from 10 to 25 tons per coil. Custom slitting and cutting-to-length are available upon request.
Q4: Do you provide a material test certificate?
A: Absolutely. Every shipment includes a Mill Test Certificate (MTC) containing chemical composition, mechanical properties, and hardness values. Third-party inspection is also accepted.
Q5: What is the minimum order quantity (MOQ)?
A: For standard sizes, the MOQ is 1 coil (about 10 tons). For custom dimensions or non-standard specifications, we can discuss a minimum quantity of 25 tons per size.
Q6: How are the coils packaged for export?
A: We use standard export packaging: steel skids, shrink wrapping, and steel straps. Coils can be wrapped with waterproof paper or plastic film as needed. The packaging is suitable for ocean freight.
Q7: What is the lead time for a typical order?
A: For stock sizes, we can ship within 7-10 days after payment. For production orders, the lead time is 15-30 days depending on quantity and specifications.
Q8: Can you supply coils for specific applications like mining dump trucks or excavator buckets?
A: Yes, our NM400 and NM500 are widely used in those applications. We can also provide advice on the best grade and thickness for your specific working conditions.
Contact us today to discuss your requirements or request a quotation. With our proven track record and global supply capability, Hemaokang Steel is your trusted partner for wear-resistant steel solutions.
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