--- type: "WebPage" title: "MIL-S-22499 Testing" description: "Do you need to validate the compliance of your laminated shims according to MIL-S-22499? Securing structural adjustments with MIL-S-22499 requirement In the Aerospace, Space, and Defense (ASD) sectors, assembly precision is a safety imperative. Laminated shims allow for perfect dimensional..." resource: "https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-s-22499-analysis/" tags: ["EN", "pll_698ed524a98a7"] timestamp: "2026-02-18T16:18:44Z" published: "2026-02-13T07:39:16Z" language: "en" author: "Filab" --- # MIL-S-22499 Testing ## Do you need to validate the compliance of your laminated shims according to MIL-S-22499? ### Securing structural adjustments with MIL-S-22499 requirement In the [Aerospace](https://filab.fr/en/sectors-of-activity/laboratory-analysis-aeronautics-aerospace.md), [Space](https://filab.fr/en/sectors-of-activity/laboratory-analysis-aeronautics-aerospace.md), and [Defense](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector.md) (ASD) sectors, assembly precision is a safety imperative. Laminated shims allow for perfect dimensional adjustment during structural assembly. Poor adhesive quality or a [non-compliant metal](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/control-of-alloys-and-grades-in-the-laboratory.md) grade can compromise the integrity of your **essential parts.** The **MIL-S-22499** military specification defines requirements for laminated metallic sheets (shim stock) that can be peeled to the desired thickness. It imposes strict criteria on sheet [chemical composition](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/metallic-alloy-analysis-laboratory.md) ([Aluminum](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/laboratory-analysis-aluminum-alloys.md), [Steel](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/laboratory-of-analysis-and-expertise-of-steels.md), [Titanium)](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/laboratory-analysis-titanium-alloys.md), adhesive bond quality, and ease of peeling without layer deformation. At **FILAB**, we support manufacturers in the ASD supply chain with the control and qualification of their materials according to MIL-S-22499, with a clear goal: to ensure the reliability of your technical and industrial decisions. ### The MIL-S-22499 requirement: a precision and adhesion challenge ### Compliance control of laminated shims according to MIL-S-22499 Compliance with this requirement guarantees that the shims will fulfill their compensation function without oxidizing or delaminating unexpectedly. FILAB intervenes to validate the performance of these complex stacks. It is specifically used to: - **Verify the metallic grade** of the sheets (e.g., Aluminum 1100, Stainless Steel 302/304) by ICP-OES chemical analysis. - **Evaluate adhesive quality** and its resistance to aging or aerospace fluids. - **Measure precise thickness** of each foil and stacking regularity.   In the Aerospace and Defense industries, compliance with MIL-S-22499 has a direct impact on: - **Assembly precision** of mechanical assemblies and control surfaces. - **Resistance to galvanic corrosion** between layers. - **In-service behavior** of **strategic components** subjected to constant vibration. ## FILAB, a laboratory tailored to aerospace & defense requirements e ### An analytical park dedicated to MIL-S-22499 expertise Analyzing laminated shims requires dual expertise in metallurgy and polymer physico-chemistry (adhesives). To meet the requirements of MIL-S-22499, **FILAB** provides its clients with state-of-the-art tools: : [### Optical microscopy](https://filab.fr/en/our-technical-resources/laboratory-of-analysis-and-observation-by-optical-microscope-mo.md) [### ICP-OES For chemical validation of the different metallic layers](https://filab.fr/en/our-technical-resources/laboratory-analysis-icp-icp-ms-icp-aes.md) [### SEM-EDX Examination of metal/adhesive interfaces and thickness control.](https://filab.fr/en/our-technical-resources/laboratory-analysis-sem-scanning-electron-microscopy.md) [### TGA To characterize the nature and thermal stability of the adhesive binder](https://filab.fr/en/our-technical-resources/tga-tga-ftir-and-tga-ms-analysis-at-filab-laboratory.md) ### Dedicated material expertise services At **FILAB**, analyses according to MIL-S-22499 are part of a comprehensive supplier qualification approach. We help assemblers ensure their shims will not lose their properties under real conditions. Our teams work on: Systematic receiving inspection on laminated shim batches Fluid compatibility tests (Skydrol, kerosene, oils) [Failure analysis](https://filab.fr/en/our-services/our-expertise-services/laboratory-analysis-failures/failure-analysis-metallic-parts.md) in case of peeling difficulty or premature corrosion ### Why choose FILAB? - **45 years** of recognized expertise in analysis and materials science - **Dual competence:** Chemistry / Materials - Specializing in **metallic alloys**and **critical applications** - **Customer qualification**: Safran, Dassault Aviation, and Framatome - **ISO 17025 Accreditation** regarding metallic alloys [Discover our accreditations](https://filab.fr/en/about-us/accreditations-en.md) Discover our metallurgical expertise ## Analysis of Iron, Aluminium, Molybdenum, Copper, Tin, Chromium, Titanium, Lead, Nickel, Zinc [Learn more](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory.md) ### Our analytical services in accordance with MIL requirements for the ASD sector [Analysis according to MIL-A-22771 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-a-22771-analysis.md) [Analysis according to MIL-T-9047 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-t-9047-analysis.md) [Analysis according to MIL-P-83348 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-p-83348-analysis.md) [Analysis according to MIL-A-6088 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-a-6088-analysis.md) [Analysis according to MIL-DTL-14067 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-dtl-14067-analysis.md) [Analysis according to MIL-DTL-5002 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-dtl-5002-analysis.md) ### Our analytical services based on ISO and ASTM standards for the ASD sector [Analysis according to ASTM E3061 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e3061.md) [Analysis according to ASTM E1086 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1086.md) [Analysis according to ASTM E1019 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1019.md) [Analysis according to ISO 8287 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-8287-testing.md) [Analysis according to ASTM B213 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/analysis-astm-b213.md) [Analysis according to ASTM B964 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b964.md) [Analysis according to ISO 12154 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-iso-12154.md) [Analysis according to ASTM E1868 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1868.md) [Analysis according to ASTM E1409 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-e1409-analysis.md) [Analysis according to ASTM E415 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e415.md) [Analysis according to ASTM E1251 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1086.md) [Analysis according to ISO 15350 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-15350-testing.md) [Analysis according to ISO 4935 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-4935-analysis.md) [Analysis according to ISO 4490 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-4490-analysis.md) [Analysis according to ASTM B527 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b527.md) [Analysis according to ASTM B923 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b923.md) [Analysis according to ASTM A269 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-a269.md) [Analysis according to ASTM E1941 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/analysis-astm-e1941.md) ### Our additional metallographic analysis [Micrographic analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/laboratory-micrographic-examination.md) [Failure analysis](https://filab.fr/en/our-services/our-expertise-services/laboratory-analysis-failures.md) [Chemical composition analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/metallic-alloy-analysis-laboratory.md) [Metallurgical analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory.md) [Metallographic analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/examination-metallographic-section-laboratory.md) [Elemental analysis](https://filab.fr/en/our-services/our-analysis-services/chemical-analysis-laboratory/laboratory-elemental-analysis.md) [Analysis of metallic alloys](https://filab.fr/en/analysis-of-metallic-alloys-in-the-laboratory.md) ## Our FAQ Which metals are commonly used under the MIL-S-22499 requirement? The most frequent alloys are **Aluminum (Type 1100)**, **Stainless Steel (Type 302 or 304)**, **Brass**, and sometimes **Titanium** for space applications. How is peeling tested in the laboratory? Beyond the manual peel test, we observe the surface state after peeling under a microscope to verify that no **excessive adhesive residues** remain, which could distort the final thickness during assembly. Is MIL-S-22499 still current? It remains a major reference in the **Component Maintenance Manuals (CMM)** of many military and civil aircraft, even if it is sometimes supplemented by more recent manufacturer specifications (or AMS-DTL-22499). What is the influence of temperature on these shims? The adhesive must remain stable. Exposure to high temperatures must not make the sheets impossible to peel. FILAB can simulate this **thermal aging** before testing. How to get a quote? To get a quote, you can contact our teams via our contact form, by phone, or by email. Simply send us your requirements (type of material, desired analysis, specific standard, urgency, sample quantity...). We will then send you a personalized technical and price proposal within **24-48 hours**