Champak Industries now Stock and supply Raex® 400 Plates — the high-strength, wear-resistant steel with good hardness and impact toughness. Raex helps extend the span of machinery, decrease wear in structural components and save costs. It also enables innovative design and lightweight products that improve energy efficiency.
Raex and Rockstar: The text and tables on this page describe Raex® 400, a wear plate from SSAB (formerly Ruukki). Rockstar is a different brand, listed on this site as an Essar Steel India product. The two are comparable, not identical: confirm which brand you need, and ask for the datasheet of the brand being quoted. “Diamension” means dimension.
Raex is a high-strength, wear-resistant steel with favorable hardness and impact toughness. It can help extend the lifespan of machinery, decrease wear in structural components and save costs. It also enables innovative design and lightweight products improving energy efficiency.
Applications include buckets and containers, cutting edges for earthmoving machines, wearing parts for mining machines, wearing parts for concrete mixing plants and wood processing machines, platform structures, and feeders and funnels.
Rockstar 400 Plates: Purchasing Specification
| Requirement | What to specify |
|---|---|
| Brand and grade | Rockstar 400 Plates; state whether another brand of the 400 HBW class is acceptable. |
| Hardness | 360 – 440 HBW on this page; confirm the guaranteed range for your thickness. |
| Dimensions | Thickness × width × length and the number of plates, or a cutting drawing. This page lists 2 – 80 mm. Sizes are confirmed at quotation. |
| Toughness | Charpy impact test temperature and minimum energy, where the part sees impact or cold service. |
| Processing | Cut-to-size parts, bending and edge preparation, with drawings and tolerances. |
| Documents | EN 10204 3.1 mill test certificate with chemistry and hardness. |
Diamension
| USED FOR | DIMENSIONS | STANDARDS |
|---|---|---|
| Wear Resistant | T: 2 - 80 mm W: Up to 3200 mm L: Up to 12000 mm |
EN 10051 EN 10029 EN 10163-2 |
Mechanical Properties
| Product | Thickness (mm) | Width (mm) | Length (mm) | Hardness (HBW) | Typical yield strength Rp0.2 (MPa) | Typical tensile strength Rm (MPa) | Typical elongation A (%) |
|---|---|---|---|---|---|---|---|
| Sheet | 2.00 - 8.00 | 1000 - 1750 | 2000 - 12000 | 360 - 440 | 1100 | 1250 | 10 |
| Plate | 6.00 - 40.00 | 1800 - 3200 | 2000 - 12000 | 360 - 440 | 1100 | 1300 | 10 |
| Plate | 40.01 - 60.00 | 2000 - 2500 | 4000 - 9500 | 360 - 440 | 1100 | 1300 | 10 |
| Plate | 60.01 - 80.00 | 2000 - 2500 | 4000 - 6900 | 360 - 440 | 1100 | 1300 | 10 |
Chemical Composition (ladle analysis)
| Product | C (max %) | Si (max %) | Mn (max %) | P (max %) | S (max %) | Cr (max %) | Ni (max %) | Mo (max %) | B (max %) |
|---|---|---|---|---|---|---|---|---|---|
| Plate | 0.23 | 0.80 | 1.70 | 0.025 | 0.015 | 1.50 | 1.00 | 0.50 | 0.005 |
| Sheet | 0.16 | 0.50 | 1.60 | 0.025 | 0.010 | 1.20 | 1.00 | 0.25 | 0.005 |
Choosing Rockstar 400 Plates
Rockstar 400 Plates is in the 400 HBW hardness class. Higher hardness generally lasts longer against sliding abrasion but is harder to bend, cut and weld; where parts also take heavy impact, a tougher, lower class can last longer.
| Class | Nominal hardness | Typical use | Forming and welding |
|---|---|---|---|
| 400 (this page) | About 400 HBW | Dumper bodies, chutes, hoppers, screens | Cold bending and welding with normal care |
| 450 | About 450 HBW | Buckets, liners and heavier wear parts | Larger bending radii; preheat thicker sections |
| 500 | About 500 HBW | Cutting edges, crusher and severe-abrasion liners | Limited forming; strict cutting and welding procedures |
Other Rockstar classes
Brands of the same class are comparable, not identical; confirm any substitution with the end user. See all brands on Wear Resistant Plates.
Applications for Rockstar 400 Plates
Typical uses include buckets, cutting edges, mining wear parts, feeders and funnels. Tell us the abrasive material, impact level and the life of the current part so the right class can be quoted.
Cutting, Fabrication and Welding
Champak Industries describes full and part plate/profile supply and a plasma-cutting service. Thermal cutting softens a narrow edge zone, and thick or hard plate may need preheat before cutting. Weld with low-hydrogen consumables and the mill’s preheat and interpass limits; do not heat the plate above the mill’s tempering limit. See AR Plates for bending and drilling guidance.
Testing, Inspection Documents and Traceability
| Requirement | What to identify in the order |
|---|---|
| Mill test certificate | EN 10204 3.1 showing brand and grade, heat number, chemistry and hardness |
| Impact test | Charpy test temperature and minimum energy, if required |
| Traceability | Heat and plate number transferred to cut pieces |
See the company’s Quality Policy for its published policy.
Source Rockstar 400 Plates from Champak Industries
Champak Industries’ company profile records its establishment in Mumbai in 1978 and its stockist, import and export activities. Rockstar 400 Plates can be requested together with other brands in the Wear Resistant Plates range.
What Determines the Quotation?
Brand, hardness class, thickness, plate size, quantity, cutting, testing and packing all affect the quotation. Say whether pricing is needed per kilogram, per plate or per finished piece.
Packing, Dispatch and Export Requirements
Give the delivery address, required date and unloading constraints. For export orders, include the destination port, delivery terms and document list.
Rockstar 400 Plates: Frequently Asked Questions
01What is Rockstar 400 Plates?
Rockstar 400 Plates is wear-resistant steel plate in the 400 Brinell hardness class, made by Essar Steel India, now ArcelorMittal Nippon Steel India. It is used where abrasion shortens the life of ordinary structural steel.
02What hardness does Rockstar 400 Plates have?
This page gives 360 – 440 HBW. Hardness ranges can fall with thickness, so confirm the guaranteed range for your thickness on the mill’s datasheet.
03Who makes this plate?
Rockstar plate is made by Essar Steel India, now ArcelorMittal Nippon Steel India. The mill and heat number are shown on the mill test certificate.
04Which thicknesses are listed?
This page lists 2 – 80 mm. Availability for each size is confirmed at quotation.
05Is Rockstar 400 Plates the same as other 400 HBW wear plates?
Wear plates of the same hardness class are comparable, not identical. Chemistry, toughness and processing advice differ by mill, so confirm any substitution with the end user.
06Can Rockstar 400 Plates be bent?
Yes, by cold bending with larger punch radii and die openings than mild steel. Follow the mill’s minimum radius for the thickness and rolling direction.
07Can Rockstar 400 Plates be welded?
Yes, with low-hydrogen consumables and the preheat and interpass temperatures the mill gives for the grade and combined thickness.
08What is Rockstar 400 Plates used for?
Typical uses on this page include buckets, cutting edges, mining wear parts, feeders and funnels.
09Which certificate should I request?
An EN 10204 3.1 mill test certificate showing the brand and grade, heat number, chemistry and hardness, plus impact results where you specify a test temperature.
10How do I get a price and delivery date?
Send the brand and grade, thickness, size or cutting drawing, quantity, destination and required date through the enquiry form below, by WhatsApp or by phone.