pahlimur

joined 1 year ago
[–] pahlimur@lemmy.world 2 points 3 weeks ago

The lower the grade the faster it rusts. Forgot most people don't know that. Its rusting because there is iron in steel (duh). It's rusting quickly because it has low concentration of rust inhibitors like chromium or nickel. Increasing the concentration of these metals makes it rust slower. It also makes it harder to tool into a car body, making it a shifty choice for a car shell.

The article you linked is either uninformed or being misleading about "free iron". That just means there are no rust inhibitors so they are leaving free energy available on the surface of an iron grain at the surface of the material. This makes it rust quickly where those grains are. There are millions of these grains at the surface where the metal interfaces with air. The iron particles are in the body panel, not on top of it.

[–] pahlimur@lemmy.world 3 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

I have an MS in mechanical engineering focused in materials and I wrote a few papers on 3d printing of stainless tool steels. I've read further down the thread and you are completely wrong.

It's rusting because it's a low grade stainless. Its low grade because stainless steel work hardens when bent or machined. Lower grades have less issues with work hardening. They made this choice to save on tooling costs I assume.

Work hardening is when you permanently deform a material it gets more brittle. Stainless is an unbelievably stupid choice for a vehicle body because it needs to be formed into complex shapes which require lots of deformation. It's why SS cars feature mostly large flat panels and also partially why we have been moving towards aluminum body panels.

[–] pahlimur@lemmy.world -2 points 2 months ago (3 children)

I generalize millennials as too young to legally drink in the US (21) but old enough to remember the millennium. It's not completely accurate though.

[–] pahlimur@lemmy.world 2 points 2 months ago (9 children)

Firm disagree. Social media, or more specifically algorithmic short form content these days, is extremely damaging. It's different from anything that's come before and has nothing to do with connecting with your peers.

I graduated high-school in 2009 so I saw the beginning of popularized social media. Very few gained anything from participating in it. Mostly people who were good at marketing and building a following benefited.

[–] pahlimur@lemmy.world 3 points 3 months ago (5 children)

Mostly agree, I hate Samsung in general (sent from Samsung Galaxy S22). Anytime I see someone considering their appliances or TVs I try to turn them to something else. They have made the best batteries for a long time though. I hope a competitor rises to squish them a bit.

Don't buy a sumsung washer. I only buy used washers and dryers because I'm cheap and handy. Samsung is not an option because a large part of the user market is broken in a way that costs the same as buying new.

I do sort of disagree with your QA comment. Everyone seems to think QA stops once you sell a product, but it doesn't. They did a full recall to fix their quality mistake. It'd be like if Tesla finally recalled all of the cybertrucks for sucking as much as they do. Massive PR hit to attempt to maintain quality.

[–] pahlimur@lemmy.world 11 points 3 months ago (1 children)

I only lurk on Reddit these days, but if old reddit goes away I'll be completely done with it.

[–] pahlimur@lemmy.world 23 points 3 months ago (7 children)

Samsung was very transparent about their fuck up with the note 7. The article you linked makes it very clear it was a connection issue or a different manufacturer. At this point this is equivalent to the burn banana peels to get high or you eat dozens of spiders while you sleep internet lies.