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SAE AMS3970/2B

Name: SAE AMS3970/2B PDF | Request Standard
SKU: 7d1e0289881d

Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing, Part 2 - Qualification Program for Fiber, Fabric, Carbon Prepreg, Film Adhesive, and Non-Structural Glass Prepreg

Standard by SAE International, 2026-07-13

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SAE AMS3970/2B.PDFSecure PDF
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Language: English
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About This Item

AMS3970/2B gives specific information about the qualification program for carbon fiber fabric reinforced epoxy structural repair prepreg systems, curing under vacuum at 120 °C (250 °F), and a companion non-structural glass fabric prepreg used for repair of carbon fiber reinforced epoxy structures. The prepreg system shall include an epoxy film adhesive to be applied in a co-curing process with the prepreg for joint solid laminate and sandwich bonding. AMS3970/2B is a Five-Year Review and update of this specification The main updates are: Harmonization of requirements with AMS6885 Additional requirements for storage life and work life in Tables 4, 5, and 9 Single lap shear test added in Table 14

SKU: 7d1e0289881d

Publication Date: 2026-07-13

Standard Status: latest

Publisher: SAE International

Document Type: Aerospace Material Specification

Subject: Carbon fibers, Fabrics and textiles, Glass, Fibers, Coatings, colorants, and finishes, Adhesives and sealants, Drying, Vacuum, Maintenance, repair and overhaul (MRO)

Official SAE: Doi link

This Version: AMS3970/2B (2026-07-13)
Previous Version: AMS3970/2A (2016-12-06)
Previous Version: AMS3970/2 (1999-12-01)

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