ppodany

9secondkox2 said:

ppodany said:

neilm said:

Titanium looks great — when it’s new. But its surface hardness is poor, making Ti a scratch magnet. Hardness can be improved by applying a suitable coating, such as the black DLC on my Series 5 Apple Watch, which still looks new. But then, of course, it also looks like any other black finished metal.

I bet that the frame will be made from Ti Grade 5 (Ti6Al4V), which is 2 times harder in comparison to the AISI 316 steel used for frame in PRO models.

That’s pretty specific. What source did you use for the designations that reveal they are what iPhone is using, particularly the steel? 

Update: nvm. Found it

I attended one presentation from Apple development team last year (TMS 2022 in Anaheim), where there presented their approach to maximal purity of this steel used in their products. Our company is cooperating with them with testing of other materials, but I can't be more specific because of NDA.  Regarding the titanium alloy (Ti grade 5) - it is one of the most used Ti material, rather easily to process, reaches good mechanical properties (hardness, strength, toughness). 

neilm said:

Titanium looks great — when it’s new. But its surface hardness is poor, making Ti a scratch magnet. Hardness can be improved by applying a suitable coating, such as the black DLC on my Series 5 Apple Watch, which still looks new. But then, of course, it also looks like any other black finished metal.

I bet that the frame will be made from Ti Grade 5 (Ti6Al4V), which is 2 times harder in comparison to the AISI 316 steel used for frame in PRO models.