Corning explains why Samsung Galaxy Note 7's Gorilla Glass 5 scratches easily


Every time a brand new flagship from a major company goes out, people are trying to find out how sturdy and well-built it is and compare the results with the marketing propaganda each of these devices is accompanied with.

When Samsung announced the Galaxy Note 7, it praised the protection material coating its display, which is the latest Corning Gorilla Glass 5. It's supposed to be more durable than the previous version, but, as many of you have already found out, it looks to be more scratchable.

The most recent video trying to prove the scratch-resistance of the Gorilla Glass 5 protecting the Samsung Galaxy Note 7 made quite a ruckus among fans. Apparently, it only takes a 3 hardness pick to scratch the Gorilla Glass 5 compared to 5 or 6 hardness pick that's required to scratch the previous version of the glass.

About 72 hours after the video was uploaded online, Corning responded by implying that the test was conducted “in an uncontrolled manner.” Corning reps also stated that a 3 hardness pick can't scratch glass with a hardness of 5 or 6 like Gorilla Glass 5 has been proven to be (in lab tests). Then why are those scratch marks so visible in the test caught on video?

According to Corning, the explanation is quite simple: “The hardness pick that was used in the video was a 3, that’s considerably softer than the glass material. Oftentimes when you have a softer material like that, and depending on what kind of loads you have used, you tend to see material transfer on the test substrate. Material transfer on the test substrate is not necessarily a scratch but it can appear to the untrained eye as a pretty visible scratch.”



Basically, what we see in the video is residue from the hardness pick rather than from the glass itself. If that's the case, then how come the residue can't be wiped off with a clean cloth?

Corning has an answer for that too: “It can be very, very difficult to remove metallic material transfer from glass. It is very atypical to see in a field return when we look at scratches of glass, that kind of characteristic, but purely visual, perceived damage that is actually a material on top of the surface.”

In either case, if you want your Samsung Galaxy Note 7 to be less prone to scratches, it's highly recommended to use a screen protector.

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87 Comments

1. bigcat

Posts: 17; Member since: Feb 22, 2016

gorilla glass 5 is a scam.

4. zeeBomb

Posts: 2318; Member since: Aug 14, 2014

You obviously haven't seen the drop test

9. Hoggington

Posts: 356; Member since: Feb 23, 2016

No one is doubting it's shatter resistance, though the back is still the weak point. It's the scratch resistance that is in question here. So in that regard...little bit deceptive, when it scratches easier than GG3 or GG5. Probably GG2 as well. One way you make display material more shatter resistant, is you increase its flexibility. And more flexibility, usually equates to softer material. Just enough to fail miserably with scratches. I have a Note 7. Believe me, I'm the last person that wants this to be true. But I think it is. I've never used a screen protector with any of the GG phones I've had. And I've never had so much as a micro scratch on the display. Now, I have screen protectors coming...and that to me is sacrilege covering up Sammy's amazing displays. Little bit concerning :(

12. DoggyDangerous

Posts: 1028; Member since: Aug 28, 2015

Keep your Note 7 safe bro. Use some protector. I am not convinced with the explanation of Corning. They are just trying to save their face. Scratch is scratch, it doesn't matter if it is a residue of a subtrate or a residue of whatever when your screen is damaged. The video was clearly showing that this scratch or a residue cannot be removed. So basically, the statement of corning is miss leading. By the way, who on this earth use his phone in controlled environment or in the lab only? GG5 should with stand normal environment rather than fictitious controlled environment.

18. tedkord

Posts: 17452; Member since: Jun 17, 2009

If what they're saying is true, then the screen wasn't damaged. The pick itself was damaged by the screen.

23. Nathan_ingx

Posts: 4769; Member since: Mar 07, 2012

More like Chuck Norris of glass

41. iLovesarcasm

Posts: 589; Member since: Oct 20, 2014

Maybe Chuck Norris is the new CEO of Gorilla Glass Company.

61. Mxyzptlk unregistered

Glassgate

68. tedkord

Posts: 17452; Member since: Jun 17, 2009

I see you got a new product you're trying to sell. Good for you. Hopefully this one will do better than the last ones.

67. sgtdisturbed47

Posts: 969; Member since: Feb 02, 2012

No, what they're saying is "that'll buff right out". In reality, they're saving face by saying it's material transfer instead of damage. If that were the case, we'd see this on every scratch test. We don't.

71. tedkord

Posts: 17452; Member since: Jun 17, 2009

Not necessarily. Don't get me wrong, I'm not saying Corning is telling the truth, I don't have the data to draw any conclusion. I'll need to see more scratch tests.

25. xondk

Posts: 1904; Member since: Mar 25, 2014

Take note though, on scratch resistance, what corning is saying is actually true, it is the pen that is getting scratched leaving material on the screen, it still looks like a scratch to us, because we can't see the difference, but if you feel over it, it should feel like a bump instead of a groove, course if this is happening in the test I do not know, but it does happen.

40. DoggyDangerous

Posts: 1028; Member since: Aug 28, 2015

Dude it is a glass, not a sand paper. For the sake of discussuion, if the pen is getting scratched then why it is not cleaning? Is there some special glue in the glass which keep the pen residue intact?

77. xondk

Posts: 1904; Member since: Mar 25, 2014

Same reason any other particle on your screen might not just wipe away? And no it isn't sand paper, but stuff sticks because of other forces at that level. But maybe a simple wet cloth could remove it. It really depends, so what corning is saying is true, is it relevant here? no clue without touching it.

10. bigcat

Posts: 17; Member since: Feb 22, 2016

how can you make a glass that more stronger and yet weaker than gorilla glass 4. Samsung wants people to use screen protector while as far as i know there is no available protector that does not cause problem with note7.

19. tedkord

Posts: 17452; Member since: Jun 17, 2009

It's simple, the harder something is, the more brittle it becomes. If you want to be less brittle, it's going to be more prone to scratches. There's just no way around it with glass.

33. SYSTEM_LORD

Posts: 1168; Member since: Oct 05, 2015

That's a very simple explanation, and one that isn't always true. Brittleness only tends to go along with hardness. Saltine crackers are both very brittle and very soft. While glass is harder than most metals, you still have alloys that are both harder and less brittle than glass. Sapphire is another example. Corundum (sapphire to laymen) is far harder than glass, but has far stronger molecular bonds and will not shatter as easily as glass. I have a split boule of purple sapphire, 30+ carats, and I can tell you this stuff is a lot tough than normal glass. All in all, this explanation is Corning using basic material science to falsely explain the findings. I wonder why JerryRigEverything's previous tests have all yielded consistent results? Why no metal residue on GG4 screens?

70. tedkord

Posts: 17452; Member since: Jun 17, 2009

The point will soon be moot. A Professor of engineering from Edinburgh has come up with a process for creating transparent aluminum. He sold the idea to an American company, and though it will take years for them to work out the dynamics of the matrix, when they do, no more scratched or shattered displays. Plus, aquariums will require much thinner, lighter walls.

87. Jimboslice

Posts: 9; Member since: May 05, 2016

I'm so glad you mentioned that! Great comment. I'd heard about it a little while back but totally forgot about it. I wish they'd hurry up with the r&d of this technology and bring it to market soon...so in a couple years I could actually afford to buy it :) Transparent aluminum just sounds so badass, I wonder what other applications this future tech could hold

78. tedkord

Posts: 17452; Member since: Jun 17, 2009

Sapphire, at the same thickness, is much more brittle than glass. That's just a fact.

35. darkkjedii

Posts: 31529; Member since: Feb 05, 2011

The new iPhones will have it also, then the comments section will really get crazy.

44. Subie

Posts: 2415; Member since: Aug 01, 2015

Hopefully real day to day use will be of no concern as this glass will most likely be used in more and more devices. BTW enjoy your 7 when you get it.

50. darkkjedii

Posts: 31529; Member since: Feb 05, 2011

Right on bro. It's in Arizona now, so I just might arrive before Tuesday.

42. Subie

Posts: 2415; Member since: Aug 01, 2015

They sacrificed hardness and scratch resistance to make it more flexible and less prone to shattering. Even GG4 was slightly less scratch resistant then GG3. http://www.evolutivelabs.com/blogs/news/17122293-gorilla-glass-3-vs-4

46. medtxa

Posts: 1655; Member since: Jun 02, 2014

If that's true, imo some scratch is better than cracked screen and ugly case..

62. Acdc1a

Posts: 475; Member since: Jan 21, 2016

I'd much rather have a scratched phone than a broken phone. Also, I've had my issues with screen protectors. With the s-pen it's a non starter, they all suck. With just my finger I still have issues with the cheap ones. That's why I don't buy them at all.

20. rocketman1

Posts: 99; Member since: May 07, 2016

5 versions and they still suck. PR scam. Gorilla glass my ass

60. SmartFix

Posts: 32; Member since: Aug 05, 2016

And ar you been so naive that even previous glasses meant sonething? Som "gorrila" s**t little label"? That is only for pathetic naive idots.. All those names 12345 is just nothing than normal ordinary glass.. Jesus ppl are so naively gullible somebody tell them something and they believe all crap

66. Rocket

Posts: 697; Member since: Feb 24, 2014

Yes bcz its glass, come on!

2. MINDoSOUL

Posts: 322; Member since: Feb 28, 2014

I will take scratch proof over shatter proof any day. That is some BS response from Corning. The good side of this is that Samsung will have to address & solve this issue quickly or it will get some backlash from buyers.

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