LG1400QT Steel Plate — Ultra-High Strength Quenched and Tempered Steel
General Technical Characteristics
LG1400QT steel plate is an ultra-high-strength structural steel produced through quenched and tempered (Q&T) heat treatment. It is designed for extreme service conditions where maximum strength, wear resistance, and reliability are required.
With a yield strength of approximately 1400 MPa, LG1400QT is one of the strongest solutions for critically loaded structures. The plate offers exceptional strength, high hardness, good impact toughness, and resistance to deformation. Weldability is limited and requires strict adherence to proper welding procedures.
Chemical Composition
The chemical composition of LG1400QT steel is engineered to form a highly durable and wear-resistant structure:
- Carbon (C) — up to 0.28%
- Manganese (Mn) — 1.3–2.0%
- Silicon (Si) — up to 0.80%
- Chromium (Cr) — up to 2.5%
- Nickel (Ni) — up to 3.5%
- Molybdenum (Mo) — up to 1.0%
- Microalloying elements (Nb, V, Ti)
The increased alloying content ensures excellent hardenability, hardness, and wear resistance.
Mechanical Properties
LG1400QT steel provides the following mechanical properties:
- Yield strength — from 1400 MPa
- Tensile strength — 1450–1700 MPa
- Elongation — 6–9%
- High hardness and adequate impact toughness
These properties allow the material to perform reliably under extreme loads and wear conditions.
Applications
LG1400QT steel plate is used in the most demanding industries:
- heavy and specialized machinery manufacturing
- ultra-heavy lifting equipment production
- mining and quarry machinery
- defense industry and special-purpose vehicles
- complex engineering and steel structures
It is especially suitable for applications where maximum strength and minimum structural weight are critical.
Features
Key advantages of LG1400QT steel:
- extremely high strength and hardness
- enhanced wear resistance
- stable performance under heavy loads
- resistance to deformation
- significant potential for weight reduction
- high reliability in long-term operation
Standards and Supply Formats
LG1400QT steel plate is supplied in accordance with international standards (EN, ASTM, GB, or manufacturer specifications).
Available supply formats:
- hot-rolled plates after quenching and tempering
- heavy (thick) plates
- standard sheet sizes
- custom cutting according to drawings
Thickness: from 6 to 60 mm
Width: up to 2500 mm
Length: upon request
Order LG1400QT Steel Plate Today
We supply high-quality LG1400QT steel plates with guaranteed performance and compliance with the highest technical requirements. Contact us today for consultation, pricing, and order placement. Choose reliable materials to ensure maximum strength and durability for your projects.
