About CompaLab
CompaLab organises proficiency testing programs - also named PTP or interlaboratory comparisons or round robin tests - along ISO 13528 and ISO/IEC 17043 standards in order to evaluate the capacity of the participants to perform identified tests. The scope of these proficiency testing programs includes the tests on metals and metallurgy, particularly on steels, ferrous materials, copper alloys and coated steels (painted and galvanised steels). Any laboratory holding equipment and human resources necessary to perform these tests may participate, regardless of its legal status.
For more details, see About CompaLab.
What is a proficiency testing program (PTP) ?
A proficiency testing program (PTP) or interlaboratory comparison (ILC) allows to evaluate the reliability of laboratories services, by sharing results of a same test, performed on a same product by all the participating laboratories. Furthermore, uncertainties on test results may be computed from results of these interlaboratory comparisons.
For more details, see What is an ILC
Register to participate to a proficiency testing program (PTP)
Several possibilities are offered to register : see all details at Register to participate
Proposed proficiency testing program (PTP)
In 2024, 90 proficiency testing schemes (interlaboratory comparisons) are proposed in the following areas:
| Chemical analysis of metals and ferro-alloys | |
| Metallography | |
| Heat treatments | |
| Intergranular corrosion of stainless steels | |
| Roughness | |
| Tests on zinc coatings | |
| Tests on liquid paints | |
| Tests on paint coatings | |
| Tests on zinc and paint coatings | |
| Tests of plastic materials | |
| Charpy impact tests | |
| Hardness tests | |
| Tensile tests | |
| Mechanical tests | |
| Tests on welded joints | |
| Tests on concrete reinforcing steels | |
| Tests of admixtures for concrete | |
| Tests of sealants | |
| Chemical analysis of metals and ferro-alloys | |
| Chemical analysis on Non alloyed steel, Low alloyed steel, High alloyed steel, Stainless steel, Copper alloy, Aluminium alloy, Ferro-manganese, Ferro-silicon, Ferro-chrome, Ferro-titanium, Ferro-vanadium, Ferro-niobium |
|
| Metallography | |
| ISO 643 ASTM E112 Determination of grain size on Non alloyed steel, Austenitic stainless steel ISO 2624 ASTM E112 Determination of grain size on Copper alloy ISO 945-1 ISO TR 945-2 ASTM A247 Classification of graphite on Cast iron ISO 3887 ASTM E1077 Depth of decarburization on Low alloyed steel ISO 4967 ASTM E45 Methods A, D, E EN 10247 Assessment of inclusions on Non alloyed steel, Austenitic stainless steel |
|
| Heat treatments | |
| ISO 18203 EN 10328 Case hardening depth on Low alloyed steel ISO 642 ASTM A255 Jominy hardenability on Low alloyed steel |
|
| Intergranular corrosion of stainless steels | |
| ISO 3651-2 Met. C ASTM A262 Practice B ASTM G28 Practice A Intergranular corrosion Streicher ISO 3651-1 ASTM A262 Practice C Huey intergranular corrosion ISO 3651-2 Met. A ASTM A262 Practice E Strauss intergranular corrosion ASTM A262 Practice F Intergranular corrosion ASTM A262 Pract. F ISO 3651-2 Met. B Intergranular corrosion ISO 3651-2 met B ASTM G48 Met. A Pitting corrosion ASTM G48 met A |
|
| Roughness | |
| ISO 4287 ISO 4288 Roughness on Galvanised steel |
|
| Tests on zinc coatings | |
| ISO 1463 ASTM B659 ISO 3882 ISO 1460 ISO 10111 ASTM A90 EN 10346 ISO 2178 ASTM B499 Galvanizing thickness |
|
| Tests on liquid paints | |
| ISO 2431 Viscosity ISO 2811-1 ISO 2811-2 ISO 2811-3 ISO 2811-4 Density ISO 3251 Non-volatile percentage EN 1767 ASTM D2621 ASTM A1252 Infrared analysis |
|
| Tests on paint coatings | |
| ISO 2808 ASTM B659 ASTM D1186 Coating thickness ISO 2409 ASTM D3359 Met. B Cross-cut test ISO 4624 Pull-off test ISO 6272-1 Impact resistance ISO 1519 ASTM D522 Bending on mandrel ISO 1522 Pendulum damping test ISO 1520 Cupping test ISO 20567-1 Stone chip impact resistance of a paint coating ISO 2812-2 Immersion in water ISO 6270-1 ASTM D4585 Exposure to moisture of painted coatings (one face) ISO 6270-2 Exposure to moisture of painted coatings (in cabinet) ISO 2813 ASTM D523 Gloss ISO 4628 Parts 1 to 8 ASTM D610 ASTM D714 ASTM D1654 Evaluation of ageing ISO 7724 Parts 1, 2 & 3 ISO 11664 Parts 1 & 4 ASTM E308 Colorimetry ISO 2409 ASTM D3359 Met. B Cross-cut test ISO 2808 ASTM B659 ASTM D1186 Coating thickness ISO 2813 ASTM D523 Gloss ISO 7724 Parts 1, 2 & 3 ISO 11664 Parts 1 & 4 ASTM E308 Colorimetry |
|
| Tests on zinc and paint coatings | |
| ISO 9227 ASTM B117 Salt spray test ISO 22479 ISO 6988 ISO 3231 ASTM G87 Sulphur dioxide test with moisture condensation (Kesternich test) Loss of mass ISO 10289 Corroded surface ISO 4628 Parts 1 to 8 ASTM D610 ASTM D714 ASTM D1654 Evaluation of ageing |
|
| Tests of plastic materials | |
|
ISO 4892-2 ISO 16474-2 Exposure to a xenon lamp |
|
| Charpy impact tests | |
| ISO 148-1 Charpy test on Non alloyed steel ASTM E23 ASTM A370 Charpy test on Stainless steel ISO 148-1 Charpy test on Non alloyed steel |
|
| Hardness tests | |
| ISO 6506-1 ISO 6507-1 ISO 6508-1 ASTM E10 ASTM E92 ASTM E18 ASTM A370 Brinell, Vickers and Rockwell Hardness on Low hardness metal, High hardness metal ISO 6507-1 ISO 4545 ASTM E92 ASTM E384 Vickers hardness under low load and Knoop hardness on Low hardness metal ISO 6508-1 ASTM E18 ASTM A370 Brinell, Vickers and Rockwell Hardness on Low hardness metal |
|
| Tensile tests | |
| ISO 6892-1 Tensile test on Non alloyed steel ASTM E8/E8M ASTM A370 Tensile test on Non alloyed steel ISO 6892-1 Tensile test on Flat steel, Austenitic stainless steel, Non alloyed steel, Aluminium alloy ISO 898-1 Tensile test on Screws ISO 3108 ASTM A931 EN 12385 ISO 12076 Tensile test on Cable ISO 6892-2 Tensile test at high temperature on Non alloyed steel ISO 6892-3 Tensile test at low temperature on Non alloyed steel |
|
| Mechanical tests | |
| ISO 7438 ASTM E290 Bending test on Non alloyed steel, Flat steel ISO 7799 Reverse bend test on strips on Flat steel ISO 8492 Flattening test on Tube of thickness 1 mm ISO 1099 Axial fatigue on Non alloyed steel ISO 12106 Axial fatigue under controlled strain on Non alloyed steel ISO 12135 ISO 12737 ASTM E399 Determination of K1c on Non alloyed steel ASTM E1820 Determination of J1c on Low alloyed steel |
|
| Tests on welded joints | |
| ISO 6520-1 ISO 5817 Evaluation of weld joint defects ISO 4136 Transverse traction |
|
| Tests on concrete reinforcing steels | |
| ISO 15630-1 Traction, geometry and linear mass on Cold rolled reinforcing steel, Hot rolled reinforcing steel ISO 15630-2 Shear test on Welded fabric for concrete ISO 15630-1 Fatigue test on Hot rolled reinforcing steel ISO 15835-2 Tests of couplers on Coupled reinforcing steels ISO 15630-3 Traction, geometry and linear mass on Prestressing strand for concrete ISO 15630-3 Relaxation test on Prestressing strand for concrete ISO 15630-3 Stress corrosion test on Prestressing strand for concrete ISO 15630-3 Deflected tensile test on Prestressing strand for concrete |
|
| Tests of admixtures for concrete | |
| EN 480-6 EN 1767 ASTM A1252 Infrared Analysis on Admixture for concrete EN 480-8 Dry material content on Admixture for concrete EN 480-10 Chloride content on Admixture for concrete EN 480-12 Alkali content on Admixture for concrete |
|
| Tests of sealants | |
| ISO 1183 Parts 1, 2 & 3 ISO 11358-1 ISO 7390 ISO 10563 ISO 2528 ISO 8339 ISO 8340 ISO 7389 ASTM C736 ISO 11432 Tests on sealants ISO 9046 ISO 9047 ISO 10590 ISO 10591 ISO 11431 Ageing tests on sealants |