Conquest Steel & Alloys supplies Rockhard 500 BHN Abrasion Resistant Steel Plates, built for the most extreme wear zones in mining, quarrying, and recycling operations — the applications where even Rockhard 400 wears out faster than the maintenance schedule allows. At 470–540 HBW, Rockhard 500 sits at the top of the abrasion-resistant range, making it the specified grade for crusher jaws, primary crushing liners, shredder wear plates, and bucket teeth on extreme-duty excavation equipment.
Manufactured to EN 10051, the plate is tested for tensile strength (1400–1700 MPa), yield strength (≥1200 MPa), and elongation (8–10%), giving fabricators verified mechanical data instead of a generic hardness rating. Chromium, nickel, and molybdenum content in the composition pushes wear resistance and toughness above Rockhard 400, so the plate survives sustained heavy impact rather than only resisting surface scratching.
Rockhard 500 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 Ludhiana-based manufacturer, supplier, trader, and exporter of steel plates across the full abrasion-resistant hardness range, from 200 BHN through Rockhard 400 and Rockhard 500. Every batch passes macro testing, micro testing, hardness testing, toughness testing, destructive testing, and PMI testing before dispatch, so what leaves the facility matches the specification sheet, backed by documentation.
For procurement teams sourcing wear parts for the harshest zones in mining, quarry, or demolition equipment, Rockhard 500 is worth specifying only where the impact genuinely warrants it. Because we also supply Rockhard 400 and 200 BHN, teams can match hardness grade to wear intensity across an entire machine without splitting orders across vendors.
Request a quote for Rockhard 500 BHN plate — share your thickness, size, and quantity, and our team will confirm pricing and delivery.
Rockhard 500 is a through-hardened wear plate built for the most punishing impact and abrasion conditions a plant can throw at steel. At 470–540 HBW, it sits above Rockhard 400 and far above general-purpose 200 BHN plate — this is the grade you move to when a lower hardness plate is already wearing out faster than expected, not the grade you start with.
The hardness runs through the full thickness of the plate, not just the surface layer. That means cutting, drilling, or re-profiling the plate during fabrication doesn't expose a softer, faster-wearing core underneath.
Rockhard 500 goes into equipment facing the heaviest, most abrasive impact loads on a plant — the zones where even a Rockhard 400 liner needs replacing sooner than the maintenance plan allows. Common applications include:
If a wear zone is already handled well by Rockhard 400, Rockhard 500 is generally more than the application needs — it costs more to fabricate and offers less welding tolerance. Reserve it for the zones where nothing softer actually survives.
Specifying Rockhard 500 in a genuinely extreme wear zone means the part survives a full operating cycle instead of failing mid-season. Crusher jaws, primary liners, and shredder plates absorb impact loads that deform or crack a lower-hardness plate within weeks — Rockhard 500's 470–540 HBW range exists specifically to hold up there.
The cost is fabrication difficulty at the top of the AR range. Welding needs tighter procedure control, and the plate is less forgiving to cold-form or bend. Reserving Rockhard 500 for zones where the wear genuinely justifies it keeps fabrication cost and lead time from ballooning unnecessarily.
Rockhard 500 is supplied in a few forms depending on how it goes into your equipment:
| Property | Value |
|---|---|
| Tensile Strength | 1400 – 1700 MPa |
| Yield Strength | ≥ 1200 MPa |
| Elongation | 8 – 10% |
| Impact Toughness | Good |
These figures top Rockhard 400 across the board except elongation, which drops slightly as expected — the trade-off for pushing hardness this high is a modest reduction in ductility, not a loss of impact performance.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20 – 0.28 |
| Manganese (Mn) | 1.00 – 1.60 |
| Silicon (Si) | 0.20 – 0.70 |
| Chromium (Cr) | 0.50 – 1.80 |
| Nickel (Ni) | 0.25 – 1.50 |
| Molybdenum (Mo) | 0.15 – 0.40 |
| Boron (B) | Trace |
The higher carbon and chromium content compared to Rockhard 400, along with added molybdenum, is what pushes hardness into the 470–540 HBW range while keeping enough toughness to absorb impact rather than crack under it.
Conquest Steel & Alloys manufactures and supplies steel plates across multiple hardness grades and alloys from our Ludhiana 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 up to Rockhard 500 for the most extreme wear zones — to industries including heavy mining, quarrying, and demolition. 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. At the hardness level Rockhard 500 operates in, that testing isn't a formality — it's what tells you the jaw liner will survive a full crushing season instead of failing at week six.
What buyers get working with us:
What does 500 BHN mean, and how is it different from Rockhard 400?
Rockhard 500 measures 470–540 HBW against Rockhard 400's 370–430 HBW — a meaningful jump in hardness. That extra hardness holds up to the most extreme, continuous impact, but it's also less forgiving to weld and bend, so it earns its cost only where Rockhard 400 genuinely isn't enough.
Can Rockhard 500 plate be welded on site?
Yes, but welding control matters more here than at any lower AR grade. Pre-heating, interpass temperature, and filler selection all need closer attention. Get guidance from our team before fabrication starts.
Is Rockhard 500 overkill for general liner or chute work?
Usually. If Rockhard 400 or even 200 BHN handles the wear zone fine, Rockhard 500 adds fabrication cost and difficulty without a real service-life gain. It's meant for the zones where softer grades fail early, not as a default upgrade.
What thickness range does Conquest Steel & Alloys supply for Rockhard 500?
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 500 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 500 outside Ludhiana 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.
Rockhard 500 BHN plate is for the wear zones nothing softer survives — crusher jaws, primary liners, shredder plates, cutting edges taking direct impact all day. At 470–540 HBW, it sits at the top of the abrasion-resistant range, 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 Ludhiana facility in thicknesses from 6mm to 100mm, Rockhard 500 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 — documentation that matters more at this hardness level than at almost any other AR grade.
Rockhard 500 isn't the right choice for every wear zone. It costs more to fabricate than Rockhard 400 and offers less welding tolerance, so it earns its place only where the impact is genuinely extreme. Since we also supply Rockhard 400 and 200 BHN, our team can help you specify the right grade for each wear zone on your equipment instead of defaulting to the hardest plate across the board.
Ready to order Rockhard 500 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 Ludhiana and pan-India dispatch.
| India Price : | Min- 110 INR Per Kg / Max- 200 INR Per Kg |
|---|---|
| USD Price : | Min- 1.25 USD Per Kg / Max- 2.28 USD Per Kg |
| Grade : | Rockhard 500 |
| Standard : | Proprietary Grade |
| Hardness : | 480 – 530 |
| Thickness : | 6mm – 100mm |
| Width : | Up to 2500mm |
| Length : | Up to 12000mm |
| Tensile Strength : | 1350 MPA |
| Yield Strength : | 1100 MPA |
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