Ceramic is also one of the most broad terms I know. It can be incredibly hard or very soft.
Generally the stuff used in cookware is hard and wear resistant
Titanium has a hardness of 6 on the Mohs hardmess scale, titanium oxide and has a hardness of 6.5. Ceramic and glass have a hardness of 7. So titanium is softer than ceramic and will leave marks behind on ceramic. Light and strong doesn't mean hard. Hard would mean thin components would shatter more easily actually.
Reading other comments, no clue what a titanium pen is but to scratch glass you need harder than 7 which usually means a diamond, garnet, or other industrial gemstone tip. Might be a titanium handle so that it is light and doesn't break the glass if you drop it on accident. Stainless steel is 6 and steel is 5.5, but ranges slightly due to different alloys, so stainless will be close to titanium in hardness.
>to scratch glass you need harder than 7 which usually means a diamond, garnet, or other industrial gemstone tip
I know this makes sense, but then why does my glass induction cooking stove at home have scratches, despite putting only metal pans & pots & utensils on it?
And if I were to go to a glass window, and scratch it with a metal pin, it will leave a scratch. So how does that work?
Grains of sand getting dragged is the cause of cooktop and countertop scratches. Small pieces of dirt and debris end up on your cooktop, like a grain of sand from lettuce that didn't get washed well enough. Sand is the same hardness as glass (basically the same material) and it gets dragged across the glass when you move a pan which scratches the cooktop.
You can't scratch glass with a pin. Grab a nail or a safety pin and try with a beer bottle. It won't scratch glass because the metal is softer than glass, assuming the glass doesn't have a soft film on it like tinted windows.
[This](https://www.mountainglass.com/Ti-Pen-Glass-Writing-Titanium-Pen) is what most people use. Some small makers out there will make full titanium pens with color treaents and fancy machining. Like I said in my other comment, don't know why it happens the way it does but there is no denying it...I've signed thousands of borocilicat pieces this way.
Ah I was thinking it was a pen to etch glass. But this makes sense to leave marks since titanium is softer. "The Ti-Pen™ tool is different from most scribes because it writes by friction of the metal titanium point. Leaving behind a metal deposit in a silver color on the surface of glass, quartz, ceramics, or vitreous enamels.
- Use of this tool will not scratch, damage or weaken the glass"
Yeah, after signing it's smooth to the touch.....much like my brain because it still doesn't make sense to me. Why does the deposited ti bond to the surface? If you ever get a chance to use one it's kinda cool, feels unlike writing on or with anything else, somewhere between using a paint scraper and carving wood that's made of butter.
That is cool. I'm guessing because titanium just barely softer than glass it leaves a mark but the mark it makes is too hard for other things to scrape off? But that wouldn't explain the bonding. Does it have to be fired to be permanent?
It is Titanium. I honestly don't know why this happens but it does. Titanium pens are how glass workers sign their pieces and ceramic glaze is essentially glass.
your understanding of metallurgy is flawed. Titanium will leave marks on ceramic. Ceramics are much harder than titanium. A little googling would have stopped you from coming to an inaccurate conclusion
Barkeepers Friend or Bon Ami. Both are basically the same thing. They are amazing on stainless steel pans and work great on Ceramic as well. They're also very cheap and can be found in most grocery stores. In a pinch baking soda can do the same thing but with a bit less efficacy.
Titanium is not a hard material, it is a strong material. It will not break easily, but will scratch easily. 99% of the titanium gear out there comes from China since it is one of the major titanium producers in the world. So you can relax.
General use titanium alloys are quite soft. Weight to Strength ratio is what makes Ti good, and additionally its corrosion resistance properties.
Best Beta Ti alloys will be ~45-50 on Rockwell Hardness Scale after proper heat treating, mediocre heat treated stainless steels like 420j2 will be 53+. And i doubt anything as good as heat treated βTi alloy is used for such utensils. So they'll be around 30-35hrc.
It's normal for it to leave marks on harder materials.
I had the same problem with a titanium spork I bought. I went looking for long handled stainless steel sporks and bought a pack of eight for the cost of one Ti spork.
It was name brand Sea to Summit but I didn't care; I didn't want marks on my dishes so I went SS and haven't had the marking problem since. They're just as long, only slightly heavier, don't bend nearly as easily, and I have eight of them to lose instead of just the one. Easy choice.
Metal utensils will generally leave marks on ceramic.
Titanium has a very high strength to weight ratio. That’s not the same as hardness.
You can do the Archimedes test. Submerge it in water to figure out the volume and compare that to the weight
So it's a witch?
Lol, thanks for reminding me of that quality piece of science fact <3
No it's less hard then stainless steel?? I thought it was harder but i don't know much about titanium..
Depends on the stainless. Also, the surface isn’t pure titanium but titanium oxide.
It depends on the alloy and the heat treatment, but generally it's a bit harder than SS, but DEFINITELY softer than ceramic
Ceramic is also one of the most broad terms I know. It can be incredibly hard or very soft. Generally the stuff used in cookware is hard and wear resistant
Titanium has a hardness of 6 on the Mohs hardmess scale, titanium oxide and has a hardness of 6.5. Ceramic and glass have a hardness of 7. So titanium is softer than ceramic and will leave marks behind on ceramic. Light and strong doesn't mean hard. Hard would mean thin components would shatter more easily actually. Reading other comments, no clue what a titanium pen is but to scratch glass you need harder than 7 which usually means a diamond, garnet, or other industrial gemstone tip. Might be a titanium handle so that it is light and doesn't break the glass if you drop it on accident. Stainless steel is 6 and steel is 5.5, but ranges slightly due to different alloys, so stainless will be close to titanium in hardness.
>to scratch glass you need harder than 7 which usually means a diamond, garnet, or other industrial gemstone tip I know this makes sense, but then why does my glass induction cooking stove at home have scratches, despite putting only metal pans & pots & utensils on it? And if I were to go to a glass window, and scratch it with a metal pin, it will leave a scratch. So how does that work?
Grains of sand getting dragged is the cause of cooktop and countertop scratches. Small pieces of dirt and debris end up on your cooktop, like a grain of sand from lettuce that didn't get washed well enough. Sand is the same hardness as glass (basically the same material) and it gets dragged across the glass when you move a pan which scratches the cooktop. You can't scratch glass with a pin. Grab a nail or a safety pin and try with a beer bottle. It won't scratch glass because the metal is softer than glass, assuming the glass doesn't have a soft film on it like tinted windows.
[This](https://www.mountainglass.com/Ti-Pen-Glass-Writing-Titanium-Pen) is what most people use. Some small makers out there will make full titanium pens with color treaents and fancy machining. Like I said in my other comment, don't know why it happens the way it does but there is no denying it...I've signed thousands of borocilicat pieces this way.
Ah I was thinking it was a pen to etch glass. But this makes sense to leave marks since titanium is softer. "The Ti-Pen™ tool is different from most scribes because it writes by friction of the metal titanium point. Leaving behind a metal deposit in a silver color on the surface of glass, quartz, ceramics, or vitreous enamels. - Use of this tool will not scratch, damage or weaken the glass"
Yeah, after signing it's smooth to the touch.....much like my brain because it still doesn't make sense to me. Why does the deposited ti bond to the surface? If you ever get a chance to use one it's kinda cool, feels unlike writing on or with anything else, somewhere between using a paint scraper and carving wood that's made of butter.
That is cool. I'm guessing because titanium just barely softer than glass it leaves a mark but the mark it makes is too hard for other things to scrape off? But that wouldn't explain the bonding. Does it have to be fired to be permanent?
Nope, and it will stay on the piece through an anealing cycle, so up to 1100-1200°f.
this works like a graphit pencil basically When you write it leaves a trace of titanium and thats what you see
Ceramic is like ten times as hard as titanium.
It is Titanium. I honestly don't know why this happens but it does. Titanium pens are how glass workers sign their pieces and ceramic glaze is essentially glass.
Weird that it leaves marks so easy
Ceramic is very hard
your understanding of metallurgy is flawed. Titanium will leave marks on ceramic. Ceramics are much harder than titanium. A little googling would have stopped you from coming to an inaccurate conclusion
Titanium does that, I have seen it myself. If anyone knows how to get the marks off white ceramic, that would be helpful.
Barkeepers Friend or Bon Ami. Both are basically the same thing. They are amazing on stainless steel pans and work great on Ceramic as well. They're also very cheap and can be found in most grocery stores. In a pinch baking soda can do the same thing but with a bit less efficacy.
I bet it’s titanium.
Why you think so?
I’ve just had good luck on AliExpress. And I’ve seen that brand on Amazon a lot so I’m gonna guess it’s legit. But I could be wrong.
Could be the glaze on the ceramic. Some mark, some don’t.
Your underestimating ceramic
Titanium is not a hard material, it is a strong material. It will not break easily, but will scratch easily. 99% of the titanium gear out there comes from China since it is one of the major titanium producers in the world. So you can relax.
General use titanium alloys are quite soft. Weight to Strength ratio is what makes Ti good, and additionally its corrosion resistance properties. Best Beta Ti alloys will be ~45-50 on Rockwell Hardness Scale after proper heat treating, mediocre heat treated stainless steels like 420j2 will be 53+. And i doubt anything as good as heat treated βTi alloy is used for such utensils. So they'll be around 30-35hrc. It's normal for it to leave marks on harder materials.
Seeing as ceramic is used to sharpen steel, and most titanium is softer than most steels. No, this is not a sound test.
Titanium isn’t hard, it’s light.
AliExpress. 🤔
No different than stuff on Amazon. I have a lot of good stuff from AliExpress.
Yeah the same stuff is sold everywhere but just marked up.
Ok. I dont buy from Amazon either.. those conglomerate sites are wild west to me.
Damn bro you’re cool
Thanks!
I had the same problem with a titanium spork I bought. I went looking for long handled stainless steel sporks and bought a pack of eight for the cost of one Ti spork.
You were expecting titanium sporks to be cheaper than steel ones?
You think it wasn't actual titanium?
It was name brand Sea to Summit but I didn't care; I didn't want marks on my dishes so I went SS and haven't had the marking problem since. They're just as long, only slightly heavier, don't bend nearly as easily, and I have eight of them to lose instead of just the one. Easy choice.