Would you like to carry out carbon and sulfur testing in accordance with ISO 15350?
Safeguarding ASD sector metallic materials through ISO 15350
In the aerospace, space and defensesectors, the chemical purity of ferrous alloys is a safety imperative. An uncontrolled concentration of carbon or sulfur can alter the mechanical properties and corrosion resistance of your critical parts.
The ISO 15350 standard defines a reference method for determining carbon and sulfur contents in steels and cast irons using infrared absorption spectrometry after combustion in an induction furnace. This method is recognized for its high accuracy and its ability to detect extremely low concentrations.
At the FILABlaboratory, we support companies in the aerospace, space and defense industries with the characterization and testing of their materials in accordance with the ISO 15350 standard, with one clear objective: to make your technical and industrial decisions more reliable.
ISO 15350: a key quality requirement for steels and cast irons
Combustion testing of carbon and sulfur in accordance with ISO 15350
The ISO 15350 standard is specifically dedicated to the elemental testing of ferrous metals. It is based on the complete combustion of the sample, enabling a comprehensive and representative measurement of the light elements present in the matrix.
It is specifically used to:
- accurately measure total carbon and sulfur contents.
- validate the compliance of steel grades (non-alloy steels, stainless steels, tool steels).
- verify the quality of cast irons before or after forming.
In the aerospace, space and defense industries, controlling these elements in accordance with ISO 15350 has a direct impact on:
- the hardness and brittleness (carbon content).
- the surface quality and the absence of hot shortness (sulfur content).
- the service performance of strategic components subjected to cyclic mechanical stresses.
FILAB, an analytical laboratory tailored to the requirements of the aerospace, space and defense sectors
A dedicated analytical facility for testing in accordance with ISO 15350
Testing in accordance with ISO 15350 requires advanced combustion technology to ensure complete gas extraction. To meet these requirements, the FILAB laboratory provides its clients with high-performance equipment:
Expert services dedicated to materials
At the FILAB laboratory, testing in accordance with ISO 15350 is part of a comprehensive materials characterization approach. Our teams work on:
carbon, alloy and stainless steels
samples from production, forging or foundry operations
cast irons (gray, ductile, etc.)
Why choose FILAB?
- 45 years of expertise in materials analysis and expertise
- Dual expertise in chemistry / materials
- Specialist in metal alloys and critical applications
- Approved by Safran, Dassault Aviation and Framatome
- ISO 17025 accreditation for metal alloys
Analysis of iron, aluminum, molybdenum, copper, tin, chromium, titanium, lead, nickel, zinc.
Learn moreOur testing services according to ISO and ASTM standards for the aerospace and defense sector
Our testing services according to MIL requirements for ASD
Our additional metallographic testing
Accreditation
This Nadcap accreditation covers in particular:
✔️ Chemical analysis (ICP-OES) of critical metal alloys
(Al, Fe, Ni, Ti)
✔️ Metallography
An international recognition that confirms our commitment to quality and reliability for the most demanding applications, especially in aerospace.
FAQ
This standard is strictly dedicated to steels and cast irons. It covers a wide range of concentrations, from very low-carbon steels to highly alloyed cast irons.
During combustion under oxygen, carbon is converted into CO2 and sulfur into SO2. These gases absorb light at specific infrared wavelengths. The absorption intensity is directly proportional to the amount of the element present in the sample.
Although the techniques are similar (combustion and IR), ISO 15350 is the preferred international reference in certain European markets, while ASTM E1019 is more commonly cited in U.S. specifications. FILAB can meet the requirements of both standards.
The sample must be clean and free from surface contaminants (oils, grease). FILAB laboratory systematically carries out thorough cleaning before analysis to measure only the carbon and sulfur "at the core" of the metal.
To request a quote, you can contact our teams via our contact form, by phone or by email.
Simply send us your requirements (material type, requested analysis, applicable standard, urgency, number of samples, etc.). We will then send you a personalised technical and pricing proposal within 24–48 hours.
