Parts of a boom lift built from Hardox® and Strenx plate hold up against ground contact, cylinder side-loading, and repeated boom extension cycles longer than plate steel of lower hardness does. Kamlesh Metal & Alloy holds sole distributorship in India for Hardox® 400, 450, 500, and 600, alongside Strenx 700, 900, 960, and 1100, all rolled by SSAB in Sweden. Plate arrives in thicknesses from 4 mm to 80 mm, matching the mill sizes fabricators cut down for boom shells, wear pads, and pin bosses. Builders of booms, wear pads, slew rings, and outrigger assemblies source these grades directly from our stock, cut to the sizes their production line runs on.
Which Parts of a Boom Lift Use These Grades
A telescopic boom lift carries five categories of structural and wear-facing components, and each one places a different demand on the steel plate that goes into it.
- Lower and upper boom sections: among the parts of a boom lift under the highest cantilever stress, where Strenx 700 and 900 keep wall thickness down while holding the yield strength needed at full extension.
- Telescopic slide pads and wear liners: Hardox® 450 and 500 resist the scoring that metal-on-metal sliding contact causes between boom sections during repeated extend-retract cycles.
- Slew ring housings and turntable plates: Hardox® 400 machines cleanly and absorb shock loading generated when the platform rotates under load.
- Outrigger pads and ground-bearing plates: Hardox® 450 spreads point load across soft or uneven ground without denting or cupping.
- Pins, bushings, and counterweight boxes: Hardox® 500 and 600 hold dimensional tolerance through thousands of load cycles.
Each of these boom lifter parts wears along a different path depending on load direction, contact surface, and duty cycle. Grade selection is rarely a single across-the-board decision. Most boom lifter parts on a 15–20 metre working-height lift combine two grades: a structural boom in Strenx and wear-facing liners in Hardox®, matched at the design stage.
Grade Selection and Mechanical Properties
Hardox® and Strenx are not drop-in substitutes for mild structural steel; the mechanical figures explain why fabricators specify them for this work. Hardox® 400 has a nominal hardness of 400 HBW and is suitable for pins, bushings, and lighter wear plates. Hardox® 450 and 500 step up to 450 and 500 HBW, holding their surface against the abrasive grit that collects on outrigger pads and slide faces on an active job site. Hardox® 600 reaches close to 600 HBW and goes into components carrying the heaviest sliding wear liners for telescopic booms on lifts working in quarry or demolition sites, for instance.
Strenx 700 carries a minimum yield of 700 MPa, Strenx 900 and 960 push past 900 MPa, and Strenx 1100 reaches 1100 MPa. Those figures let a fabricator cut boom wall thickness without giving up load capacity. A lighter boom section carries a longer reach at the same counterweight or holds the same reach at a lower overall machine weight, a trade-off that feeds directly into a lift’s load chart.
Sourcing Boom Lift Parts Material from Kamlesh Metal & Alloy
Kamlesh Metal & Alloy stocks Hardox® and Strenx plate in standard thicknesses, ready for cutting and supplies mill-certified material traceable back to SSAB Sweden on every dispatch. Our ISO 9001:2015 certification covers the quality system behind each plate that leaves the warehouse, from incoming inspection through to dispatch documentation.
Ex-stock cut plate against standard sizes ships within 2 to 3 working days; a fresh mill order routed from Sweden takes 6 to 8 weeks to land in India. That gap is why fabricators comparing boom lift part suppliers on lead time work from our warehouse stock first, and hold the Sweden route for planned, high-volume runs. Buyers assessing boom lift part suppliers on paperwork also receive complete mill certificates with each dispatch, tying every plate back to its SSAB cast number.
Buyers ordering parts of a boom lift in production volume get access to standing stock commitments.
Contact Kamlesh Metal & Alloy for current stock positions and pricing on Hardox® and Strenx plate for your next boom lift project.
