This specification covers the chemical, mechanical, and metallurgical requirements for wrought annealed, cold worked, or hot rolled titanium-6aluminum-7niobium alloy (UNS R56700) bar and wire to be used in the manufacture of surgical implants. Titanium mill products covered in this specification shall be formed with the conventional forging and rolling equipment found in primary ferrous and nonferrous plants, and may be furnished as descaled or pickled, sandblasted, chemically milled, ground, machined, peeled, polished, or cold drawn. The alloy shall be multiple melted in arc furnaces (including furnaces such as plasma arc and electron beam) of a type conventionally used for reactive metals. Heat analysis shall conform to the chemical composition requirements prescribed for aluminum, niobium, tantalum, iron, oxygen, carbon, nitrogen, hydrogen, and titanium. The material shall conform to the specified requirements for mechanical properties such as ultimate tensile strength, yield strength, and elongation. A minimum of two tension tests from each lot shall be performed. Special requirements for the microstructure are detailed as well.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers the chemical, mechanical, and metallurgical requirements for wrought annealed titanium-6 aluminum-7 niobium alloy bar and wire to be used in the manufacture of surgical implants (1-4).

1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents in parentheses are for information only.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

E8/E8M Test Methods for Tension Testing of Metallic Materials

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E290 Test Methods for Bend Testing of Material for Ductility

E1409 Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique

E1447 Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by Inert Gas Fusion Thermal Conductivity/Infrared Detection Method

E1941 Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis

E2371 Test Method for Analysis of Titanium and Titanium Alloys by Atomic Emission Plasma Spectrometry

E2626 Guide for Spectrometric Analysis of Reactive and Refractory Metals

SI10 American National Standard for Use of the International System of units (SI): The Modern Metric System

Aerospace Material Specification

ISO Standards

Keywords

metals (for surgical implants); orthopaedic medical devices; titanium alloys (for surgical implants);

ICS Code

ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)

Citing ASTM Standards

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