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In the highly demanding world of metals and minerals, every detail matters. From the elemental makeup of raw ores to the precise composition of refined metals, obtaining fast, accurate, and reproducible data is essential for ensuring quality, efficiency, and meeting stringent compliance standards.
At LECO, we turn complex material analysis into clear, actionable results. Our advanced instrumentation and trusted technologies empower mining labs, steel mills, and foundries to optimize processes and validate materials across the entire lifecycle—from raw materials characterization to finished metal certification.
Get rid of guesswork with our line of metallographic instruments, built to adequately prepares your samples for in-depth, accurate analyses.
Our sectioning machines, mounting presses, grinder/polishers, hardness testers, and metallographic microscopes enable clear visualization of grains, phases, inclusions, and defects, supporting quality control and process optimization across a wide range of materials.
We deliver precise determination of critical elements including Carbon, Sulfur, Oxygen, Nitrogen, and Hydrogen (C/S/O/N/H). Trust LECO’s flagship solutions—including our CS/ONH Analyzers (like the CS844 or ONH836), and Glow Discharge Spectrometers (GDS950)—for industry-leading reliability and compliance with ASTM and ISO standards.
Join the global community of professionals who rely on LECO to drive performance and innovation in their metallurgical and mining workflows. Scroll below to explore our featured instruments and access technical resources tailored to your specific material challenges.
LECO supports innovation and quality assurance in the building and construction industries through advanced material solutions. Our expertise spans elemental analysis, metallography, and thermal analysis, providing the critical data needed for industry excellence.
SPEAKER: Andrew Storey, Ph.D. | Former LECO Analytical Scientist, GDS specialist
SPEAKER: Adam Darling | LECO Analytical Chemist, Technical Service Lab
SPEAKER: David Coulston | Former LECO Metallography Applications Engineer
Browse the app notes below to discover how LECO instruments perform when put to the test with your industry’s applications.
Trusted expertise, groundbreaking technology, and a commitment to your success.

At LECO, quality isn’t outsourced—it’s engineered into every part, every component, every instrument.

Great service isn’t just about being available, it’s about being adaptable. When you invest in a LECO instrument, you’re gaining a partner committed to your success.

Every LECO instrument reflects this application knowledge. We don’t just understand instruments; we understand your work.

At LECO, we’re proud to offer the best of both worlds: the reach of a global company with the care of a local partner.
High-Throughput C/S/O/N/H Analyzers for Quality Control
Automated Vickers/Knoop Hardness Testing
Advanced Metallographic Sample Sectioning Machines
Carbon and Sulfur Analysis by Combustion
Elemental Analysis for Oxygen, Nitrogen, and Hydrogen Detection
Glow Discharge Spectrometer
Grinding and Polishing System
Mounting Press
Multiphase Carbon and Water Analyzer