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U.S. Department of Health and Human Services

Recognized Consensus Standards: Medical Devices
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Part B: Supplementary Information Sheet (SIS)
FR Recognition List Number 066 Date of Entry 05/25/2026 
FR Recognition Number 8-647
Standard
ASTM  F3260-25
Standard Test Method for Determining the Flexural Stiffness of Medical Textiles
Scope/Abstract
1.1 This test method covers the measurement of flexural stiffness properties of medical textiles (for example, surgical mesh, films, and membranes). Bending length is measured and flexural rigidity is calculated.

1.2 This test method may be used for absorbable or non-absorbable medical textiles.

1.3 This test method measures the flexural stiffness at room temperature in air and, if used directly, may not provide an accurate measure of in-vivo behavior for implantable medical textiles.

1.4 This test method is not suitable for testing tubular samples.
Extent of Recognition
Complete standard
Rationale for Recognition
This standard is relevant to medical devices and is recognized on its scientific and technical merit and/or because it supports existing regulatory policies.
Transition Period
FDA recognition of ASTM F3260-18 [Rec# 8-485] will be superseded by recognition of ASTM F3260-25 [Rec# 8-647]. FDA will accept declarations of conformity, in support of premarket submissions, to [Rec# 8-485] until July 2, 2028. After this transition period, declarations of conformity to [Rec# 8-485] will not be accepted.
Public Law, CFR Citation(s) and Procode(s)*
Medical textiles
Relevant FDA Guidance and/or Supportive Publications*
Appropriate Use of Voluntary Consensus Standards in Premarket Submissions for Medical Devices - Guidance for Industry and Food and Drug Administration Staff, issued September 2018.
FDA Technical Contact
 David Simon
  FDA/OC/CDRH/OSEL/DBCMS/
  301-796-4122
  DAVID.SIMON@FDA.HHS.GOV
Standards Development Organization
ASTM ASTM International http://www.astm.org/
FDA Specialty Task Group (STG)
Materials
*These are provided as examples and others may be applicable.
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