Our laboratory is an expert in the metallurgy and analysis of alloys, particularly tin-lead (SnPb), and offers its expertise in analysing the chemical composition and controlling the grades of metal alloys.
Your needs: to carry out an analysis of the SnPb alloy
SnPb (tin-lead) alloy is a widely used metallic material, particularly in electronic and electrical soldering applications.
SnPb alloys are composed of tin (Sn) and lead (Pb) in varying proportions. Other elements, such as copper, nickel or iron, can be added to improve its mechanical properties, heat resistance and durability.
There are several types of SnPb, classified according to their chemical composition and physico-chemical characteristics:
The different types of SnPb and alloys
There are several types of SnPb (tin-lead) alloys, each with specific properties adapted to different uses, mainly in brazing, electronic welding and electrotechnical applications.
Here are the main types, classified according to their composition, melting point and use:
Analysis of SnPb composition: essential quality control
Analysis of the chemical composition of SnPb enables the presence and concentration of essential alloying elements, such as tin, lead or silver, to be verified, ensuring the conformity of materials for safety- and performance-critical applications.
Our analysis methods for SnPb alloys
We use advanced analytical techniques, such as spectrometry and ICP analysis, to accurately detect the chemical composition of SnPb and its alloys. These methods can be used to measure elemental content and ensure material quality.
Our analysis of metals and alloys
Iron: steel, steel 316l, stainless steel, cast iron
Cobalt : Cobalt Stellite Grade 6, Cobalt Stellite Grade 21
Composition analysis enables quality control and ensures the conformity of SnPb for demanding industrial applications.
Analysis of the chemical composition and grade control of SnPb alloys
To see further: our expertise on SNPB alloys
In addition to routine metallurgical analyses, the FILAB laboratory can provide you with expert metallurgical analysis and failure studies on your SnPb samples:
Metallographic examination of SnPb
Weld analysis on SnPb
Study of fracture surfaces on SnPb
Study of ageing (corrosion, surface alteration, etc.) on SnPb
Thickness measurement of SnPb part coatings
Study of corrosion resistance on SnPb
Analysis and characterization of SnPb surfaces (roughness, defects, etc.)
Analysis Alloy composition
Study of microstructures on SnPb material
Analysis of SnPb alloys according to ISO and NF standards
Our laboratory complies with the reference standards for the analysis of SnPb alloys, guaranteeing results that comply with ISO and NF standards.
Applications of SnPb alloy analysis
SnPb alloy analysis is commonplace in sectors where SnPb is widely used, such as aerospace, electronics and medical applications. Whether to check the corrosion resistance, durability or safety of materials.
Why choose our laboratory for SnPb analysis?
Our FILAB laboratory offers services dedicated to the analysis of SnPb and its alloys, tailored to the specific needs of each industry. SnPb composition analysis can be used to address a number of industrial issues:
FAQ
By chemical analysis (ICP-OES or XRF) to detect the presence of lead.
Visually, the difference is almost invisible: only an analysis can tell the difference. Lead-free alloys often contain silver (Ag), copper (Cu) or bismuth (Bi) in place of lead.
Poor SnPb alloy composition can have several negative impacts on the quality of a weld.
Firstly, an incorrect melting point can lead to poor wettability, or even cold solder joints, compromising adhesion and conductivity.
Too much lead makes the solder more brittle, with an increased risk of delamination under mechanical or thermal stress.
The presence of impurities such as aluminium, sulphur or phosphorus can lead to excessive oxidation, cracking or poor adhesion to the substrate.
Finally, heterogeneity in the alloy composition leads to overall mechanical fragility of the weld and promotes premature fatigue under stress.
RoHS Directive (EU): maximum threshold = 0.1% (1000 ppm) lead in electrical/electronic equipment, unless exempted.
REACH: lead is a SVHC (substance of very high concern). Its presence must be declared as > 0.1% in certain products.
Quantitative chemical analysis (ICP-MS or ICP-OES)
Rapid screening (XRF) of finished parts
By supplier attestation + laboratory control
In the case of exemption (critical sectors), technical documentation must justify the use of SnPb
