YY 0605.12-2016Implants for surgery - Metallic materials - Part 12: Wrought cobalt-chromium-molybdenum alloy (English PDF)

1 Scope

This part of YY 0605 specifies the requirements for two surgical implants for forged cobalt 28 chromium 6 molybdenum alloys.

This section applies to forged rods and wire for surgical implants.

Note 1. The mechanical properties of the samples taken from the finished product may not necessarily comply with the provisions of this section.

Note 2. The high carbon alloy produces a distinct carbide distribution structure that can be adjusted during the production of the bar or during the subsequent heat treatment of the finished product.

The distribution of carbides in the product is outside the scope of this section.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

Determination of apparent grain size by ISO 643 steel micrograph (Steels-Micrographicdeterminationoftheapparentgrain size)

ISO 6892-1 Metallic materials - Tensile testing - Part 1. Room temperature test method (Metalicmaterials - Tensiletesting -

Part 1. Methodoftestatroomtemperature

3 chemical composition

According to the method specified in Chapter 6 of the representative alloy samples for melting analysis, the chemical composition should be consistent with the provisions of Table 1.

Table 1 Chemical composition element

Chemical composition (mass fraction) /%

Alloy 1 (low carbon) alloy 2 (high carbon)

Chromium (Cr)

Molybdenum (Mo)

Iron (Fe)

Manganese (Mn)

Silicon (Si)

Carbon (C)

Nickel (Ni)

Nitrogen (N)

Cobalt (Co)

<=0.75

<=1.0

<=1.0

<=0.14

<=1.0

<= 0.25

Matrix

<=0.75

<=1.0

<=1.0

0.15 to 0.35

<=1.0

<= 0.25

Matrix

YY 0605.12-2016/ISO 5832-12..2007 […]