Shop Rockhard 400 BHN Abrasion Resistant Steel Plates at Best Price in Delhi — Conquest Steel & Alloys

Conquest Steel & Alloys supplies Rockhard 400 BHN Abrasion Resistant Steel Plates, engineered for machinery and structures under continuous heavy wear — the kind of environment that wears through standard steel far faster than the maintenance budget allows. At 370–430 HBW, Rockhard 400 sits well above general-purpose 200 BHN plate, making it the specified grade for crusher liners, haul truck bodies, excavator buckets, and quarry screening equipment.

Manufactured to EN 10051, the plate is tested for tensile strength (1250–1600 MPa), yield strength (≥1000 MPa), and elongation (10–12%), giving fabricators verified mechanical data rather than a generic hardness rating. Chromium and nickel content in the composition improves wear resistance and toughness together, so the plate holds up to sustained impact rather than only resisting surface scratching.

Rockhard 400 is available as standard plates, thinner sheets, and pre-profiled liner plates, in thicknesses from 6mm to 100mm, widths up to 2500mm, and lengths up to 12000mm. Custom cutting and sizing to project drawings is available, cutting down on-site fabrication work for larger orders.

Conquest Steel & Alloys is a Delhi-based manufacturer, supplier, trader, and exporter of steel plates across the full abrasion-resistant hardness range, from 200 BHN through Rockhard 400. Every batch passes macro testing, micro testing, hardness testing, toughness testing, destructive testing, and PMI testing before dispatch, so what leaves the facility matches what's on the specification sheet — backed by documentation, not just a claim.

For procurement teams sourcing wear parts across mining, quarry, or heavy construction equipment, Rockhard 400 offers a practical middle ground between fabrication ease and serious impact resistance. Because we also stock 200 BHN and other AR grades, teams can specify different hardness plates for different wear zones on the same machine, all from a single supplier.

Request a quote for Rockhard 400 BHN plate — share your thickness, size, and quantity, and our team will confirm pricing and delivery.

What Are Rockhard 400 BHN Abrasion Resistant Steel Plates?

Rockhard 400 is a through-hardened wear plate designed for equipment that takes continuous impact and friction from rock, ore, or heavy aggregate. Its 370–430 HBW hardness places it well above general-purpose 200 BHN plate, which is why it's specified for parts like crusher liners and truck beds rather than lighter chute or ductwork applications.

Unlike surface-hardened alternatives, Rockhard 400 carries its hardness through the entire plate thickness. That's a practical advantage during fabrication — cutting, drilling, or profiling the plate doesn't expose a softer core underneath.

Where Are They Used? (Application)

Rockhard 400 goes into equipment that absorbs repeated heavy impact, not just surface scraping. Common applications include:

• Crusher liners — absorb direct rock-on-metal impact in primary and secondary crushing stages
• Dumper and haul truck beds — resist gouging from loading and dumping sharp-edged rock and ore
• Excavator and loader buckets — hold up against dense, abrasive ground during continuous digging
• Feed chutes and screening equipment — manage high-velocity material impact ahead of crushing
• Conveyor structures at transfer points — handle heavy aggregate load where wear concentrates
• Demolition and recycling equipment — deal with mixed metal debris and abrasive material together

If a wear zone is manageable with 200 BHN plate, Rockhard 400 is more hardness than the job needs — and harder to weld into the bargain. It's the right call specifically where wear is heavy and constant, not occasional.

Why It Is Important

Specifying the wrong hardness on a heavy-wear part shows up fast in the maintenance schedule — a part rated for years fails in months. Rockhard 400's 370–430 HBW hardness is built for exactly the zones where 200 BHN plate would gouge or deform quickly: crusher jaws, bucket edges, and truck beds absorbing direct rock impact.

The trade-off sits on the fabrication side. Higher hardness demands tighter welding control and less forgiving bending. Matching the grade to the actual wear intensity — not over-speccing, not under-speccing — keeps both service life and fabrication cost where they should be.

Features of Rockhard 400 BHN Abrasion Resistant Steel Plates

• 370–430 HBW hardness — engineered for sustained impact and abrasion, not surface-level wear
• Tensile strength of 1250–1600 MPa — holds up under heavy mechanical load without cracking
• Yield strength of ≥1000 MPa — resists permanent deformation under continuous stress
• Elongation of 10–12% — retains enough ductility to absorb impact rather than fracture brittle
• EN 10051 compliance — built to a recognised European standard, verifiable on request
• Chromium and nickel alloying — adds wear resistance and toughness beyond plain carbon steel
• Supplied as plates, sheets, or liner plates — fabricated to the part, not shipped as generic flat stock

Benefits of Rockhard 400 BHN Abrasion Resistant Steel Plates

• Extended service life on heavy-wear components — fewer liner and bucket replacements across a working season
• Lower cost per operating hour — less time spent swapping worn parts means more productive machine hours
• Reliable performance under load — tested tensile and yield figures mean the plate performs as specified, not approximately
• Fewer surprise breakdowns — parts wear on a predictable curve instead of failing without warning
• Consistent quality across repeat orders — the same grade, standard, and test process every batch, so procurement doesn't requalify material each time

Types of Rockhard 400 BHN Abrasion Resistant Plates

Rockhard 400 is available in a few forms depending on how it fits into your fabrication process:

• Standard plates — flat stock cut to size for building liners, buckets, or structural wear components
• Sheets — lighter-gauge stock for high-wear applications that don't need full plate thickness
• Liner plates — pre-cut or pre-profiled sections designed to bolt or weld straight into chutes, crushers, and hoppers

Mechanical Properties of Rockhard 400 Plates

These properties hold up under sustained mechanical stress and impact loading — the reason Rockhard 400 Steel Plates perform reliably in extreme-stress applications where lighter AR grades fall short.

Chemical Composition of Rockhard 400 Plates

The balanced composition enhances wear resistance and toughness together, which is why Rockhard 400 performs in high-impact applications without the brittleness that comes with hardness alone.

Why Choose Conquest Steel & Alloys as a Supplier for Rockhard 400 Abrasion Resistant Plates?

Conquest Steel & Alloys manufactures and supplies steel plates across multiple hardness grades and alloys from our Delhi facility, serving domestic and export markets as a manufacturer, supplier, trader, and wholesaler of industrial-grade steel.

We cover the full abrasion-resistant range — from 200 BHN general-purpose plate through Rockhard 400 for high-impact zones — to industries including construction, infrastructure, and precast manufacturing. Every plate ships with tested mechanical and chemical data: tensile strength, yield strength, and full composition verified per batch, not estimated from a spec sheet.

Plates are manufactured to EN 10051 and other applicable national and international standards, with test reports available on request. Before dispatch, every batch goes through macro testing, micro testing, hardness testing, toughness testing, destructive testing, and PMI testing. That's what separates a plate that performs as specified from one you find out about mid-project.

What buyers get working with us:

• Full hardness range under one supplier, from 200 BHN to Rockhard 400
• Custom thickness and profiling to match project drawings
• Documented test certificates on every order
• Domestic and export supply, dispatched pan-India
• Direct manufacturer pricing, no middleman markup

Frequently Asked Questions

What does 400 BHN mean on a Rockhard plate?

BHN stands for Brinell Hardness Number. Rockhard 400 measures 370–430 HBW — roughly double the hardness of standard 200 BHN plate, built specifically for continuous heavy impact rather than light-to-moderate wear.

Can Rockhard 400 plate be welded on site?

Yes, though it needs more careful procedure than 200 BHN plate — pre-heating and welding technique matter more at this hardness level. Our team can advise on welding parameters for your specific fabrication setup.

How does Rockhard 400 compare to lighter AR grades like 200 BHN?

Rockhard 400 handles heavier, more constant impact where 200 BHN would gouge or deform. The trade-off is fabrication difficulty — Rockhard 400 is harder to weld and bend, so it's worth specifying only where the wear genuinely justifies it.

What thickness range does Conquest Steel & Alloys supply for Rockhard 400?

6mm to 100mm, in widths up to 2500mm and lengths up to 12000mm, with custom cutting available to match your project drawing.

Do you provide test certificates with Rockhard 400 orders?

Yes. Every batch undergoes macro, micro, hardness, toughness, destructive, and PMI testing, and certificates are provided with your order as standard.

Do you supply Rockhard 400 outside Delhi or export internationally?

Yes, we supply across the Indian domestic market and export internationally, with dispatch timelines confirmed at the time of quote based on your location and order size.

Contact Conquest Steel & Alloys for Rockhard 400 Abrasion Resistant Plates at Best Price in Delhi

Rockhard 400 BHN plate is built for the wear zones that outpace standard steel — crusher liners, haul truck beds, quarry buckets absorbing impact all day. At 370–430 HBW, it resists the gouging and deformation that a 200 BHN plate would suffer within a season, and Conquest Steel & Alloys backs every batch with verified tensile strength, yield strength, and chemical composition data, not a vague hardness claim.

Manufactured to EN 10051 and supplied out of our Delhi facility in thicknesses from 6mm to 100mm, Rockhard 400 comes as plates, sheets, or pre-profiled liner sections, cut to your project drawing rather than shipped as generic flat stock. Every order arrives with macro, micro, hardness, toughness, destructive, and PMI test certificates, so what you specified is what shows up on site.

Getting the hardness grade right the first time matters more than it looks on paper. Over-specify, and you're paying for fabrication difficulty the application didn't need. Under-specify, and you're replacing liners and buckets on a schedule that eats into uptime. Since we also supply 200 BHN and other AR grades, our team can help match the right plate to each wear zone on your equipment instead of defaulting to one grade across the board.

Ready to order Rockhard 400 BHN Abrasion Resistant Steel Plate? Contact Conquest Steel & Alloys with your thickness, size, and quantity, and we'll respond with pricing and delivery timelines for Delhi and pan-India dispatch.

• Request a Quote — send thickness, width, length, and quantity for a fast response
• Bulk Order Enquiries — dedicated pricing for project and fleet-scale orders
• Technical Support — talk to our team about grade selection for your wear application
• Export Enquiries — international shipping and documentation support available

Rockhard 400 Specification: