Quard 400 Wear Abrasion Resistant Sheet Plates.
Champak Industries are one of the prominent Quard 400 Wear Abrasion Resistant Sheet Plates Suppliers, Manufacturer & Exporters. Quard 400 Plates is engaged in supply of Quard 400. Due to its optimal combination in hardness, strength and ductility, Quard 400 can be used in any application exposed to wear from various hard abrasives such as rocks, sand, minerals, scrap, waste or other aggressive materials.
Reading the description: Champak Industries is a stockist and supplier; Quard plate is made by its mill (NLMK, listed on this site under its former owner, Duferco). “Minimun” means minimum.
Quard 400 is easy to bend, cut, machine and weld (to some extent, it's like processing mild steel).
In all thicknesses Quard 400 is combined with an excellent surface finish and close thickness tolerances, providing your final application with a high quality look and accurate design fitting .
Quard 400 is ideal to be used in applications like: buckets, crushers, cutting edges, dump trucks, loaders, skips, sieves, feeders, measuring pockets, skips.
Hardness Quard get its high hardness and strength through a precise water quenching process.
The hardness is mainly controlled by the carbon content and by using accurate alloy compositions the scatter in hardness and other properties can be kept to a minimun.
The production process of Quard produces a lath type of martensitic structure of high hardness, strength and toughness, granting 100% through thickness hardening.
Quard 400 Plates: Purchasing Specification
| Requirement | What to specify |
|---|---|
| Brand and grade | Quard 400 Plates; state whether another brand of the 400 HBW class is acceptable. |
| Hardness | 370 – 430 HBW on this page; confirm the guaranteed range for your thickness. |
| Dimensions | Thickness × width × length and the number of plates, or a cutting drawing. 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. |
Chemical Composition of Quard 400 Wear Abrasion Resistant Sheet Plates
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | B |
|---|---|---|---|---|---|---|---|---|---|
| Quard 400 | ≤ 0.16 | ≤ 0.70 | ≤ 1.60 | ≤ 0.025 | ≤ 0.010 | ≤ 0.50 | ≤ 0.25 | ≤ 0.25 | ≤ 0.005 |
Mechanical Properties of Quard 400 Wear Abrasion Resistant Sheet Plates
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness | Charpy-V impact test |
|---|---|---|---|---|---|
| Quard 400 | 1050 | 1250 | 10 | HBW = 370 - 430 | longitudinal at -40°C 30 J |
Choosing Quard 400 Plates
Quard 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 Quard 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 Quard 400 Plates
Typical uses include buckets, crushers, cutting edges, dump trucks, loaders, skips and feeders. 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 Quard 400 Plates from Champak Industries
Champak Industries’ company profile records its establishment in Mumbai in 1978 and its stockist, import and export activities. Quard 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.
Quard 400 Plates: Frequently Asked Questions
01What is Quard 400 Plates?
Quard 400 Plates is wear-resistant steel plate in the 400 Brinell hardness class, made by NLMK (listed on this site under its former owner, Duferco). It is used where abrasion shortens the life of ordinary structural steel.
02What hardness does Quard 400 Plates have?
This page gives 370 – 430 HBW. Hardness ranges can fall with thickness, so confirm the guaranteed range for your thickness on the mill’s datasheet.
03Who makes this plate?
Quard plate is made by NLMK (listed on this site under its former owner, Duferco). The mill and heat number are shown on the mill test certificate.
04Which thicknesses are listed?
This page does not list a thickness range; send the thickness you need and availability will be confirmed at quotation.
05Is Quard 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 Quard 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 Quard 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 Quard 400 Plates used for?
Typical uses on this page include buckets, crushers, cutting edges, dump trucks, loaders, skips and feeders.
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.