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AM/NS
Weldstar

Ultra High-Strength fine
grained Weldable Quenched
and Tempered Steel Plates

Design Engineers, R&D Heads and Product Managers are constantly pushing for machines that carry more and consume less. Achieving that performance typically demands heavier, more robust components and that's where the challenge arises. The added weight cuts into fuel efficiency, raising energy consumption and pulling overall output down. AM/NS India Weldstar, a range of ultra-high-strength, quenched and tempered steel plates, is built for higher loads and larger machines that demand greater capacity without added self-weight. Its exceptional strength-to-weight ratio enables design teams to build lighter without compromising strength and stronger without adding weight to the machinery. Reduced weight directly improves fuel efficiency, helping equipment cover more ground with less energy.

By combining strength, toughness, and weldability in one solution, Weldstar gives engineers the freedom to design for performance rather than around machinery limitations.

AMNS Structromax

Advantages

AM/NS Weldstar is produced using microalloys like chromium, nickel, molybdenum, and niobium, backed by strict process control, especially during the quenching and tempering process, to deliver the desired microstructure, hardenability, and the ideal balance of strength and toughness.

AM/NS Weldstar exhibits high load-bearing capability under heavy suspended loads.

AM/NS Weldstar delivers superior surface quality and uniform flatness, requiring no additional preparation before fabrication and reducing the need for rework.

AM/NS Weldstar is designed with a Lower Carbon Equivalent (CEV), enabling superior weldability, bendability, and reduced risk of cracking.

Advantages

AM/NS Weldstar enables lighter moving structures in cranes, lifting equipment and mobile machinery, directly reducing stress on foundations, bearings and drive systems.

AM/NS Weldstar is engineered to withstand high-vibration environments, providing reliable fatigue resistance across demanding operating cycles.

AM/NS Weldstar performs reliably at low temperatures and under high dynamic loads, extending equipment service life while reducing maintenance.

AM/NS Weldstar guarantees impact toughness at temperatures as low as –40°C and –50°C for ultra-tough grades, ensuring reliable performance in thick welded sections under dynamic loads.

Bridges

Applications

Bridges

Agriculture Machinery

Offshore Structure

Foldable Bridges for Defence

Windmills

Heavy Lifting Systems

High Rise Buildings

Hydropower - Penstock Fabrication

Bridges

Large - Telescopic Boom

Bridges

Offshore Platform - Jack up Rigs

Bridges

Transportation

Get to know more

If you would like to discover our product in detail, simply download the brochure

Technical Specifications

Application Criticality Equivalent Grade as per EN Thickness (mm) Impact Strength Key Attributes
Tight Dimensional Tolerances EN10025_6_S500Q/QL/QL1 8-100 30J Min at −40
Deg C Temperature
Ultra High Strength
Superior Weldability EN10025_6_S620Q/QL/QL1 8-100 30J Min at −40
Deg C Temperature
Finer Grain and
desired microstructure
Extended Service Life EN10025_6_S690Q/QL/QL1 8-100 30J Min at −40
Deg C Temperature
Low Carbon Equivalent
EN10025_6_S890QL 8-80 30J Min at −40
Deg C Temperature
Superior Fatigue
Resistance
EN10025_6_S960QL 8-50 30J Min at −40
Deg C Temperature

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