ASTM F2848-17 - 1.5.2017
 
1. Scope

1.1 This specification covers ultra-high molecular weight polyethylene (UHMWPE) yarns intended for use in medical devices or components of medical devices, such as sutures and ligament fixations. This specification covers natural (non-colored) and pigmented (colored) yarns.

1.2 This standard is intended to describe the requirements and the procedures to be followed for testing UHMWPE yarns as a component for medical devices prior to manufacturing processes of the medical device such as fabric formation, assembling and sterilization. This specification does not purport to address the requirements for the finished medical devices or the testing that is needed for medical devices that are fabricated from the components specified herein.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

TABLE 1 Requirements for UHMWPE Yarns

Property

Test Method

Requirement

Density, g/cm3

Test Methods D792 or D1505

0.95 - 1.00

Melting temperature – peak, °C

Test Method F2625

140 - 150

Filament Linear Density, dtex (Maximum)

6.3

2.7

Intrinsic Viscosity, dl/g (Minimum)

6.4

15

Tensile Strength, cN/dtex (Minimum)

6.5

26

Tensile Modulus, cN/dtex (Minimum)

6.5

750

Elongation-at-break, %

6.5

2 - 5

Additional requirement for colored yarn:

 

 

 Pigment content, wt.% (Maximum)
 Chromium-cobalt-aluminum oxide

6.2

2

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

D792-20

Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

D1601-18

Standard Test Method for Dilute Solution Viscosity of Ethylene Polymers

F756-17

Standard Practice for Assessment of Hemolytic Properties of Materials

F2625-10(2016)

Standard Test Method for Measurement of Enthalpy of Fusion, Percent Crystallinity, and Melting Point of Ultra-High-Molecular Weight Polyethylene by Means of Differential Scanning Calorimetry

F748-16

Standard Practice for Selecting Generic Biological Test Methods for Materials and Devices

D1505-18

Standard Test Method for Density of Plastics by the Density-Gradient Technique

D885-D885M-10

Standard Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

D2256/D2256M-21

Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method

D1907/D1907M-12(2018)

Standard Test Method for Linear Density of Yarn (Yarn Number) by the Skein Method