carbon sulfur LECO testing

LECO Combustion Analysis and Testing

LECO combustion testing is a technique used to precisely determine the content of carbon, sulfur, nitrogen, oxygen, and hydrogen in metals and alloys. When small pieces of metal samples cannot be “sparked” on a spectrograph due to size constraints, Ledoux & Company can analyze these materials by LECO combustion.

Fundamentally, this process involves burning of the sample to release these specific elements. Via ASTM E1019 procedures, we use state-of-the-art LECO instrumentation to provide superior accuracy when detection limits are low and/or samples are small. Testing a variety of metals and alloy combinations, LECO combustion analysis successfully detects low levels of carbon, sulfur, nitrogen, oxygen and hydrogen (from .0002% to .05%, depending upon sample type).

Our LECO combustion analysis methods include:

Carbon and Sulfur Analysisleco analysis testing

After weighing your sample material, we heat and combust the material in the presence of pure oxygen. During this process, carbon and sulfur are oxidized to form carbon dioxide (CO2) and sulfur dioxide (SO2).

Oxygen and Nitrogen Analysis

We incorporate gas fusion under a flowing stream of helium, then measure combustion gases through infrared absorption and thermal conductivity. During this process, oxygen and carbon combine to form carbon dioxide (CO2), and nitrogen is released as nitrogen gas (N2).

Hydrogen Analysis

We incorporate gas fusion under a flowing stream of inert argon gas, then measure combustion gases by infrared absorption and thermal conductivity. During this process, oxygen combines with carbon to form carbon dioxide (CO2) and hydrogen is released as hydrogen gas (H2).

With LECO combustion analysis method, we can test carbon steel, stainless steel, alloy steels, cast iron, nickel alloys, titanium alloys and cobalt alloys. Partnering with the manufacturing, aerospace, marine, energy & power, heavy equipment, medical, foundry and other industries, we provide detailed reports of combustion analysis results and recommendations.

Common LECO Combustion Analysis Include:
~ Carbon
~ Ferrous and Non-Ferrous  Materials
~ Hydrogen
~ Nitrogen
~ Oxygen
~ Reactive Materials
~ Refractions
~ Sulfur

Whatever your material testing requirements are, we have the knowledge and experience to meet your needs.

For more information about our LECO analysis and testing services, please fill out this form:




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