ASTM F1044-05 (2017)e1 PDF

Full title and description

Standard Test Method for Shear Testing of Calcium Phosphate Coatings and Metallic Coatings. This ASTM test method specifies a uniaxial shear test procedure to evaluate the adhesive or cohesive shear strength of continuous calcium phosphate (for example, hydroxyapatite and other tribasic calcium phosphates) and metallic coatings bonded to dense metal substrates, primarily used for implant and medical-device applications.

Abstract

ASTM F1044-05(2017)e1 defines specimen preparation, bonding, and test conditions for measuring shear strength of coatings adhered to metal substrates. The method is intended for comparative evaluation, quality control, and selection of coating/substrate combinations; results depend on substrate preparation, coating process, adhesive used for fixturing, and test alignment. Values are reported in SI or inch-pound units (each system treated independently).

General information

• Status: Withdrawn / superseded (replaced by ASTM F1044-25, 2025).
• Publication date: Current edition approved Dec 1, 2017 (designated F1044-05(2017)e1); editorial corrections January 2018. (Original adoption 2005; reapproved 2017).
• Publisher: ASTM International.
• ICS / categories: 25.220.40 (Metallic coatings / medical and surgical materials and devices).
• Edition / version: F1044-05(2017)e1 (originally F1044-05; reapproved 2017; editorial change e1 January 2018).
• Number of pages: 6 pages (historical edition F1044-05(2017)e1).

Scope

This test method covers shear testing of continuous calcium phosphate coatings and metallic coatings adhering to dense metal substrates at ambient temperatures. The procedure assesses adhesion of coatings to substrates or internal cohesion in shear parallel to the surface plane, and is intended for comparative and quality-control purposes rather than to provide intrinsic material properties for all service conditions. SI and inch-pound units are treated independently.

Key topics and requirements

• Shear test geometry and fixturing to apply uniaxial shear parallel to the coating/substrate interface.
• Specimen preparation requirements including representative substrate/coating production and surface preparation procedures.
• Use of an adhesive/bonding agent to attach test fixtures — adhesive must meet minimum shear capability for the test arrangement (historically guidance used adhesives capable of ≈34.5 MPa / 5000 psi).
• Minimum number of specimens and test repetition for statistical comparison (typical recommendation: multiple specimens, commonly five or more).
• Test crosshead rate guidance (historical practice: slow constant rate, e.g., 0.25 cm/min or 0.1 in./min, to apply shear until separation).
• Reporting requirements: maximum load, calculated shear strength, units used (SI or inch-pound), and description of coating, substrate, surface preparation, adhesive, and test alignment.

Typical use and users

Used by medical-device manufacturers, materials and surface-coating laboratories, implant developers, quality-control and R&D teams evaluating calcium phosphate (e.g., hydroxyapatite) and metallic coatings on implants and other medical components. Also used by third-party testing laboratories and regulatory groups assessing comparative adhesion performance of coatings.

Related standards

References and related ASTM standards commonly cited with F1044 include ASTM E6 (terminology for mechanical testing) and ASTM E8/E8M (tension testing of metallic materials) as normative references for terminology and related mechanical test practices. The F1044-05(2017)e1 edition was revised and incorporated into ASTM F1044-25 (2025).

Keywords

calcium phosphate, hydroxyapatite, tribasic calcium phosphate, shear testing, adhesion, coatings, metallic coatings, implant coatings, adhesion strength, ASTM F1044.

FAQ

Q: What is this standard?

A: ASTM F1044-05(2017)e1 is a standard test method for shear testing of calcium phosphate and metallic coatings bonded to dense metal substrates; it specifies specimen preparation, fixturing, test procedure, and reporting for comparative adhesion measurements.

Q: What does it cover?

A: It covers uniaxial shear testing of continuous coatings at ambient temperature to assess adhesive and cohesive shear strength of coatings on metal substrates; it is intended for comparative evaluations and quality control rather than as a universal predictor of in-service performance.

Q: Who typically uses it?

A: Medical-device manufacturers, implant coating suppliers, materials testing labs, R&D groups, and quality-control personnel who need to compare adhesion performance of calcium phosphate and metallic coatings on implants or other metal parts.

Q: Is it current or superseded?

A: The F1044-05(2017)e1 edition has been superseded by ASTM F1044-25 (published/approved 2025). Users should refer to ASTM F1044-25 for the current, active wording and any updated requirements.

Q: Is it part of a series?

A: F1044 is part of ASTM Committee F04 (Medical and Surgical Materials and Devices) test methods for implant materials; it relates to a family of standards addressing mechanical testing and coating specifications used in medical-device evaluation.

Q: What are the key keywords?

A: calcium phosphate, hydroxyapatite, shear strength, adhesion, metallic coatings, implant coatings, ASTM F1044.