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ILC List 2025 |
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The 2023 ILC (interlaboratory comparisons) program includes chemical analyses of metals and ferroalloys, physical tests (metallography, decarburization and heat treatments, intergranular corrosion tests, determination of the roughness of a surface), tests on liquid paints (viscosity, non volatile percentage and volumetric mass, infra-red spectrometry), test on organic or inorganic coatings (thickness, gloss, colorimetry, resistance of the film), aging tests (salt spray test, Kesternich test, water immersion, xenon lamp, UV), mechanical tests (Charpy impact test, Brinell, Rockwell and Vickers hardness tests, several types of tensile tests at ambient temperature or high temperature, bending test and rebend test, tube flattening test, fatigue test), tests of mechanics fracture, tests on welded joints, tests on bolts, tests on steels for concrete, on welded mesh, prestressing steels for concrete, tests on plastic material, tests on admixtures for concrete, tests on sealants (properties and ageing). |
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In order to reduce the number of samples to be processed at the same time by participants, the year is divided into 3 groups: |
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Group |
Opening date of registrations |
Registration deadline |
Date of shipment of samples |
Start of the tests |
Deadline for carrying out the tests and providing the results |
Date of delivery of reports |
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1 |
20/12/2024 |
25/04/2025 |
30/05/2025 |
03/06/2025 |
25/08/2025 |
07/10/2025 |
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1 (long-term tests) |
20/12/2024 |
25/04/2025 |
30/05/2025 |
03/06/2025 |
27/10/2025 |
06/12/2025 |
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2 |
20/12/2024 |
30/06/2025 |
29/08/2025 |
03/09/2025 |
27/10/2025 |
06/12/2025 |
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Note: After the deadline, registrations are only accepted within the limit of availability of samples |
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In addition to the assessment of the bias and repeatability, the participation to ILC organised by CompaLab provides an individual estimate the uncertainties of your test results. |
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At last, for participants who need their results very quickly, some samples which properties are known through the results of former ILC are also available. |
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Chemical analysis of metals and ferro-alloys
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Reference |
Description |
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Chemical analysis of a non alloyed steel
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Chemical analysis of a low alloyed steel
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Chemical analysis of a high alloyed steel
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Chemical analysis of a stainless steel
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Chemical analysis of a copper alloy
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Chemical analysis of an aluminium alloy
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Chemical analysis of a ferro-manganese
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Chemical analysis of a ferro-silicon
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Chemical analysis of a ferro-chrome
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Chemical analysis of a ferro-titanium
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Chemical analysis of a ferro-vanadium
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Chemical analysis of a ferro-niobium
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Chemical analysis of cast iron
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Chemical analysis of iron ore
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Hardness tests
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Reference |
Description |
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Brinell, Vickers and Rockwell hardness tests of a metal (low hardness)
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Brinell, Vickers and Rockwell hardness tests of a metal (high hardness)
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Low load Vickers and Knoop hardness tests
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Rockwell hardness tests of a metal (Infrequent scales)
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Charpy impact tests
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Reference |
Description |
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Charpy impact pendulum test at ambient temperature (low energy)
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Charpy impact pendulum test at ambient temperature (medium energy)
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Charpy impact pendulum test at ambient temperature (high energy)
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Charpy impact pendulum test at ambient temperature (ASTM - medium energy)
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Charpy impact pendulum test at -50°C of a non alloyed steel
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Charpy impact pendulum test at ambient temperature (KU2 - medium energy)
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Charpy impact pendulum test at ambient temperature (KU8 - medium energy)
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Tensile tests
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Reference |
Description |
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Tensile test of a machined test piece (test pieces machined by the participants)
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Tensile test of a machined test piece (test pieces machined by CompaLab)
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Tensile test of a machined test piece (ASTM)
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Tensile test of a flat steel (ASTM)
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Tensile test of a flat steel
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Tensile test of an austenitic stainless steel
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Tensile test of a pipe
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Tensile test of a wire
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Tensile test of a wire rod
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Tensile test of a flat piece of aluminium alloy
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Tensile test of fasteners made of steel
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Tensile test of a steel wire rope
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Tensile test at 500°C of a non alloyed steel
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Tensile test at -150°C of a non alloyed steel
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Metallography
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Reference |
Description |
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Determination of the grain size and of the content of non metallic inclusions of a non alloyed steel
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Determination of the grain size and of the content of non metallic inclusions of an austenitic stainless steel
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Determination of the grain size of a copper alloy
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Graphite classification of cast irons
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Intergranular corrosion of stainless steels
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Reference |
Description |
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Test of resistance of a stainless steel to intergranular corrosion (Streicher test)
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Test of resistance of a stainless steel to intergranular corrosion (Huey test)
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Test of resistance of a stainless steel to intergranular corrosion (Strauss test)
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Test of resistance of a stainless steel to intergranular corrosion (ASTM A262 Practice F)
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Test of resistance of a stainless steel to intergranular corrosion (ISO 3651-2 Met. B)
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Test of resistance of a stainless steel to pitting and crevice (ASTM G48 Met. A)
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Heat treatments
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Reference |
Description |
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Determination of the case hardening depth
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Hardenability test by end quenching (Jominy test)
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Determination of decarburization depth
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Tests on zinc and galvanized paint coatings
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Reference |
Description |
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Determination of thickness of a zinc coating
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Salt spray test of coated and non coated steels
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Sulfur dioxide test with condensation of moisture (Kesternich test) of coated and non coated steels
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Tests on liquid paints and paint coatings
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Reference |
Description |
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Determination of properties of a liquid paint
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Determination of thickness, gloss and colorimetric parameters of a paint coating
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Cross cut test of a paint coating
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Pull-off test for adhesion of a paint coating
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Impact resistance testing of a paint coating
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Bending test (cylindrical mandrel) of a paint coating
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Pendulum damping test on a paint coating
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Cupping test of a paint coated metal
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Stone chip impact resistance of a paint coating
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Determination of resistance of a paint coating to water immersion
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Determination of resistance to humidity of a paint coating (one side exposed)
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Determination of resistance to humidity of a paint coating (in cabinet)
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Resistance to xenon lamp exposure (Paint coating and plastic material)
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Resistance to UV exposure (Paint coating and plastic material)
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Salt spray test of coated and non coated steels
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Other mechanical tests
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Reference |
Description |
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Bending test of a flat steel
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Reverse bend test on strips
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Flattening test of a metallic pipe
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Stress controlled axial fatigue test on steel
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Strain controlled axial fatigue test on steel
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Determination of K1c on non alloyed steel
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Determination of J1c
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Tests on welded joints
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Reference |
Description |
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Geometry of welded joint
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Transverse tensile test on welded joints
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Transverse tensile test on welded joints after heat treatment
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Tests on concrete reinforcing steels
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Reference |
Description |
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Tensile test, geometry and linear mass of a cold rolled concrete reinforcing steel
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Tensile test, geometry and linear mass of a hot rolled concrete reinforcing steel
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Determination of the shear force of a welded fabric
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Fatigue test of a concrete reinforcing steel
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Tests of couplers for reinforcing bars
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Tensile test, geometry and linear mass of a concrete prestressing steel
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Relaxation test of a concrete prestressing steel
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Stress corrosion test of a concrete prestressing steel
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Deflected tensile test of a concrete prestressing steel
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Tests of admixtures for concrete
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Reference |
Description |
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Tests on admixtures for concrete
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Tests of sealants
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Reference |
Description |
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Tests on sealants
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Ageing tests on sealants
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Tests of plastic materials
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Reference |
Description |
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Hardness test on plastic material
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Tensile test on plastic material
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Flexion test on plastic material
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Density, ash content, water content on plastic material
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Calorimetric analysis (DSC) on plastic material
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Thermogravimetric analysis (TG) on plastic materials
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Thermomechanic analysis (TMA) on plastic materials
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Infrared analysis (FTIR) on plastic material
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Costs of transportation
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Costs of transportation |
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Transportation costs are computed taking into account the approximate weight of the samples and the country where the samples must be delivered. |
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Note: if two shipments are required (corresponding to groups 1 and 2), prices are calculated separately for each shipment and the amount due is the total of the two. |
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Note: If additional sendings are required (e. g. paper documents), these sendings must be handled by the participant. |
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Total weight (kg) |
France (métropole) |
France (DOM-TOM), |
Europe |
Other country |
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1 |
20 |
25 |
30 |
50 |
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2 |
25 |
40 |
35 |
55 |
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5 |
30 |
55 |
45 |
90 |
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10 |
35 |
80 |
60 |
160 |
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20 |
40 |
110 |
80 |
260 |
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40 |
70 |
220 |
150 |
520 |
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60 |
100 |
330 |
220 |
780 |
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80 |
140 |
445 |
300 |
1040 |
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Discount for multiple participation |
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A single manual registration of one or several laboratories or of a laboratory to several ILC enables a discount in accordance with the following conditions: |
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Total amount of the order, excepted transportation costs, before discount (€) |
Discount (%) |
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≥ 1000 |
10 |
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≥ 2000 |
20 |
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The discount does not apply on transportation costs. |
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Fees for registration by internet are 20% lower than for manual registration. No discount on these prices is then available. |
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