Top Posts Tagged with #alphacase

The alpha case forms when the Titanium surface reacts with oxygen at high temperatures, causing the Titanium surface to become brittle and susceptible to cracking and premature failure. As a result, the alpha case layer is not permitted for medical applications according to ASTM F67, ISO 5832-2, ASTM F136, and ISO 5832-3. For more information on Titanium for medical applications, you can write to us at [email protected]

•18+ Adults Only

Watch Anya Live on Cam

Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.

✓ Live Streaming✓ Interactive Chat✓ Private Shows✓ HD Quality

Anya is LIVE right now

FREE

Free to watch • No registration required • HD streaming

What is the Alpha case in Titanium? The alpha case is a hard and brittle layer formed due to the reaction of Titanium with Oxygen at a higher temperature.

What are the effects of the Alpha case on Titanium materials/end-products? When subjected to repetitive or sudden load, crack initiation can occur at the alpha case layer leading to a material failure. The alpha case in Titanium implants is not desirable as it can cause an implant failure.

What are the ways to avoid the Alpha case? Titanium raw materials must be as per ASTM F136 & ISO 5832-3 standards. These standards suggest there is no possibility of Alpha case in the Titanium materials. Processes such as machine milling, mechanical machining or chemical milling can remove this layer.

For more information, you can write to us at [email protected].

The ISO 5832-2 specification qualifies Unalloyed Titanium Grades for medical applications.

These specification grades are used in medical implant manufacturing because they have stringent microstructure requirements such as uniform alpha phase distribution, grain size, and no foreign phases (Alpha case), which can improve Unalloyed Titanium properties.

Because there are fewer grain boundaries with coarser grain sizes, the mobility of dislocations is not as restricted. As a result, the strength of Titanium implants with the coarser grain is less. With fine grain size, there are a large number of grain boundaries that obstruct dislocation migration as we apply stresses to Titanium. As a result, it improves the strength of a Titanium implant.

If the grain size of Titanium materials is not uniform, there will be different properties at different locations, which is inappropriate for the long life of Titanium implants. If the grain size of Titanium implants is uniform throughout the Titanium implant, it can have homogenous properties, and an implant can last longer in the human body.

That's why ISO 5832-2 states that the grain size of Titanium material used for medical applications should be uniform and with a grain size 5 or finer.

To explain the alpha case, we will make a separate post as it is a common requirement for all medical Titanium grades.

For any information regarding Titanium metallurgy, you can write us at [email protected]

ASTM B265 and ASTM F67 are Titanium standards that suggest the quality parameters for commercially pure Titanium raw materials. The primary distinction between these two standards is that "an alpha case layer on a titanium surface, are not permitted under ASTM F67, while the same is allowed under ASTM B265 standard." Alpha case in microstructure determines the longevity of Titanium end-products. The ASTM B265 only addresses mechanical and chemical requirements. There is no requirement for a microstructure/alpha case in the ASTM B265 standard. So it is better to use ASTM F67 standard commercially pure Titanium material for medical implant applications. At the end of the standards series, we will explain the Alpha case and its effects on Titanium end-products. For more information, you can reach out to us at [email protected]

Trending Tags

Last Seen Tags

#alphacase

Trending Tags

Last Seen Tags

#alphacase