DIY Aluminum Bronze. One of the hardest bronzes!
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- Опубліковано 2 жов 2024
- For one of future projects I need hard bronze, that's why I decided to make Aluminum Bronze. This bronze is one of the hardest!
This bronze will consist of 88% of copper and 12% of aluminum. Melting process is simple. At first I need to melt copper. So when I reach the temperature 1100-1200 C, I'll add aluminium. Finally, I suppose to get 2 kg of hard aluminum bronze.
From Wikipedia:
Aluminium bronze is a type of bronze in which aluminium is the main alloying metal added to copper, in contrast to standard bronze (copper and tin) or brass (copper and zinc). A variety of aluminium bronzes of differing compositions have found industrial use, with most ranging from 5% to 11% aluminium by weight, the remaining mass being copper; other alloying agents such as iron, nickel, manganese, and silicon are also sometimes added to aluminium bronzes.
Aluminium bronzes are most valued for their higher strength and corrosion resistance as compared to other bronze alloys. These alloys are tarnish-resistant and show low rates of corrosion in atmospheric conditions, low oxidation rates at high temperatures, and low reactivity with sulfurous compounds and other exhaust products of combustion. They are also resistant to corrosion in sea water. Aluminium bronzes' resistance to corrosion results from the aluminium in the alloys, which reacts with atmospheric oxygen to form a thin, tough surface layer of alumina (aluminium oxide) which acts as a barrier to corrosion of the copper-rich alloy. The addition of tin can improve corrosion resistance.
Link: en.wikipedia.o...
Guys, don't forget to check AlumiTube channel, where you can find a lot of grate videos about metals melting and casting:
/ @alumitube
And of course check out BigstackD channel, where you'll find melting of so many metals and alloys that you cant even imagine: / @bigstackd
Dural Metalurg channel: / duralmetalurg
Playlist "All videos": • Trident coat of arms. ...
DIY Aluminum Bronze. One of the hardest bronzes: • DIY Aluminum Bronze. O...
Aluminium bronze is such a nice colour I was glad when I saw you hit it with a lathe . That’ll make some awesome future castings for sure 👍🏻. Cheers for my channel link at the end buddy😉😁
Yeah. The most thing I like that it's very hard. In addition, it has a great corrosion resistance. :) This cool alloy can be used for more purposes than brass. And you're welcome. :) I added the link to your channel in the description as well. I don't think that a lot of people read that but maybe some youtube algorithms will scan it and there will be some positive influence :)
Wow, that’s impressive. I would love to see a Bronze Age type sword cast from it. Maybe do some testing.
Thanks buddy. I have everything you've mentioned on my channel. 2 bronze swords: ua-cam.com/video/N9Rv5bFT6sI/v-deo.html and ua-cam.com/video/NiezYQ3cdIc/v-deo.html . Different bronzes test: ua-cam.com/video/7mA8hLcpL38/v-deo.html More than 56 videos on the channel. A lot of interesting stuff
Great video dural... Thanks for the shout 😁, i will be uploading on friday 🤘
You're welcome. I want to say that I really like that UZI :) Grate quality!
Just found this fella. Right down your alley eh.
Be very very carefull not to use iron crucible and tool : aluminium could react with iron oxide to form a thermide reaction
Thank you. After a year or so I started to use graphite crucible.
@@DuralMetalurg the channel "the art of weapon" have a video where an accident like this happens
There's not really enough quantity to worry about. Just think of the aluminum as keeping your crucible clean!
Hi there, nice to see you're still responding to comments 3 years later! 2 quick questions:
1) Do you find Aluminum Bronze to be easier/harder to work with than Tin Bronze? If so in what way
2) Are you still posting videos?
Hi. Yes I still respond and will continue to do this ;) Concerning comparison of aluminum and tin bronze I can only say that aluminum bronze is harder. I wasn't the one who processed it on a lathe, so can't say anything about that. That person told me about the difference but because as you mentioned it was 3 years ago I don't remember. About hardness you probably saw a video where I compared different types of bronze. I will return to my foundry and as a result will continue to post videos in about a year. So far I read Tuck Langland book From Clay to Bronze and many other things to make sure I can do that in a more professional way ;) Thanks for watching and commenting!
Newbie for ya here. Come on by if you like. I sure like the setup you are using. Nice and functional ! I am sure the slugs will remelt fine after a visit in the oven. Esp for the round. I hate steam explosions eh, LOL. You can get a near brinell r with your center punch. Just time and more time punching things.
Thank you :)
Thanks for sharing man 😎👍
You're welcome!
Did you melt that in a fire extinguisher????
No. I've welded a crucible using a piece of pipe
Its very beautiful, i can use only 4%of aluminium??
Thanks. You certainly can but bronze will be much more reddish and softer.
@@DuralMetalurg thank you for answer my question, the aluminium bronce with 10% of aluminium it's toxic for use in a ring??
@@Sebastian-lu8en You're welcome. I don't think that it can be considered toxic. I wouldn't recommend to cook food in a pan made of this alloy but I don't think that there will be any problems with jewelry. I'm not an expert but this is not lead or something like that. It's not toxic.
“How hard is it?”
*tries to hammer nail into billet of metal. *fails
“Is very hard”
I've made hardness tests. Video is here: ua-cam.com/video/7mA8hLcpL38/v-deo.html
A chemical is used for aluminium bronze for smooth melting.I think it is borax , what about your suggestions.❤
If you cut a large pice of copper tube longways and Hammer it to for your vice then you won't need to wrap delicate parts in some kind of rubber.
Thanks for the idea 🙂👍
I HAVE TO MAKE A QUESTION ABOUT THE ALUMINUM. THERE ARE VARIOUS TYPES OF ALUMINUM. WHICH ITEMS ARE MADE WITH THE MOST PURE ALUMINUM?
To be honest it's really hard to say. All aluminum is far from to be pure. I'd prefer the one which contains a little bit of copper. That's duraluminium. It's strong, so can be used for many projects. Aluminum which contains silicone is cheap for producers and low quality
Hello, we are from Vietnam and have the same job as you. We look forward to working with you
I realy loved this VDO !!!
cause i've always wondered about mixing copper and aluminium, & if the final combination of the
metals loses the strength or not !!
but is it necessary to take 88% Cu & 12% Al ?
& How can you advise me about the hardness ? because i need it for somthing that required the hardness ....
THNX after all
Thank you. That's great that you like it. The hardness is 24 - 25 HRc. You can check this video where I've made such measurements: ua-cam.com/video/NiezYQ3cdIc/v-deo.html I have other video about making high leaded bronze as well: ua-cam.com/video/U839v3-M6xE/v-deo.html In addition several more videos about different bronzes casting will be uploaded in the nearest future :) There are different types of copper alloys. 88/12% is the bronze which contains the highest percentage of aluminum that's why I've decided to make it. You can use less aluminum but without adding other components it'll be softer.
Remember with hardness also comes brittleness.
@@constitutionalrepublican1611 Sure. You're right!
@@DuralMetalurg ive actually been thinking of bronze and titanium and how that would go
@@constitutionalrepublican1611 Well, as I know when starting melting titanium in "classic" melting furnace it'll start burning 🔥🔥🔥 At home it's pretty hard to do that. We need to prevent its contact with oxygen, for instance by using vacuum or inert gases to succeed 🙂
Great vice
Thank you ;)
These al-bronze alloys are very interesting. So, what did you end up using it for?
Yes, it's really so. There will be a video in 2-3 month where you can see how I used it 😃 It'll be bronze age weapon casting. Characteristics of aluminum bronze is not worse than tin bronze, so basically this decorative weapon could be effectively used that time 😃
Dural Metalurg IMO aluminum bronze will perform even better as a blade than tin bronze would due to its hardness. I've cast a couple of aluminum bronze axes and they hold up very well once you do a work hardening process on the edges. Good luck!
Thank you. I'll check your video with the bronze axe.
88% copper and 12% aluminum by weight not volume right?
Yes, you're right. By weight.
@@DuralMetalurg hi , do u know if calculate by volume have any difference ?
@@DuralMetalurg i mean , if calculate by volume then is like 60.44% copper and 39.55% aluminium
@@DuralMetalurg which one is the right plan ？
@@AustinLO You can use calculating by volume as well. Theoretically it's no matter but for practicall use it's hard to measure scrap of different metals. It's just much easier to weigh metals you need ;) Proportion is different in both cases of course but it's gonna work...
Ha subscriber 555 just not evil enough...please keep making videos...
Thank you for the subscription :) Well, someone will get 666 sooner or little later :)
Get a pot of water and heat to boil, take off heat and pour molten alloy into it. It’s Japanese water casting. Reduced O2 getting in to the metal. There are videos here that show it. Actually I’ve got one showing it!👍👍
Hi Scott. I've checked your video and can say that it's very interesting but it would be very good to see all stages of this process! It's really hard for me to imagine how it works. In addition, could you explain how oxygen can be an issue for copper alloys? I understand that some metals, for instance titan, are melted in vacuum or inert gases. Other way it will start burning because of oxygen and the same with some special steels.
Thank you for the video. Do you not use Propane? Why not?
Thank you for watching :) Well, first of all I tried the easiest way to start with which required 0 investments in my case. Coal allows to get really high temperature and the only issue is to prepare the furnace each time before casting. Because I used this technology for a while I get used to it. I'll switch on propane or electricity in the future if I try and like it :)
Why blue hole comes after aluminum branch road is prepared If there is some solution to cure, then tell me.sir
Do you have such a problem regularly? Are those "blue holes" pretty deep? You might try to change green sand. Such things as water quantity, clay and sand may have some influence. In addition, check the temperature of the molten bronze before casting. I don't know what exactly can do that but you may try these things
I'm just getting into making alloys so I have a question, since you seem to be rather experience. As you may know, AL. cans are an alloy that include a significant amount of copper, Iron and silicon, along with small amounts of other metals. How would that effect the bronze? I was thinking of making 80/20 alumibronze with it, do you know how the other elements in the aluminum would effect that alloy?
All aluminium scrap that is available for home use is never pure aluminium. It`s always some aluminium alloy. Of course it can be a big deal for some applications but for the home melting and casting not too much. So, in my opinion there is no reason to worry about that. To see the difference we need microscope and special equipment for professional testing. If you won't be happy with technical characteristics I would just recommend to change copper/aluminium proportion.
uh just copper and aluminum? you didnt make bronze. you need copper and tin to make bronze plus the aluminum for aluminum bronze. all you made was copper and aluminum.
No. You're wrong. There're thousands of different copper/aluminium alloys. The same with carbon steel, stainless steel. For example bronze C95200 contains 89% copper, 10% aluminium, 1% Fe and that's it. At the same time C95600 contains 91% copper, 7% aluminium and 2% Si. Aluminium scrap is never pure aluminium. It's already contains multiple elements. I can't say which grade I've got because I don't now aluminium alloy grade but that`s 100% aluminium bronze!
@@DuralMetalurg yeah not true bronze. bronze is copper and tin period. so you arent making anything bronze without copper and tin. your are losing more hardness without using the tin, like in actual bronze. its like saying your making a stainless steel without chromium, while still adding all the other main ingredients. and your aluminum argument is dumb since aluminum is an alloy and obviously contains multiple things.
@@DuralMetalurg so tell me this, since you are just using copper and aluminum copper is also used to make brass along with zinc. so why isnt your "aluminum bronze" also called aluminum brass? if you dont even need the other ingredient
@@stektirade Aluminium is not an alloy. This is metal. Google if you don't understand basic things. About stainless steel you don't understand basics as well and argue with the person who worked for huge Iron and steel works. Next time I see any disrespectful word your comments will be deleted and you blocked!
What type of aluminium did you use was it one with Sillicon or just can aluminium.
I don't remember about this particular video. Sometimes as you say I used Silumin and some aluminum was high quality duralumin (auto parts usually)
@@DuralMetalurg oh
90% Copper and 10% Aluminium is better. I ve read that it only mixes good with 6% Aluminium or 10%.
What the difference between: 88% Cu + 12% Al and 89% Cu + 11% Al
Is it possible to do the test of which ratio will yield the best results? Thank you, i subscribed!
Thank you Wolverine. Even 1% is really important when we speak about alloys made on metallurgical plants which are used for very specific things. When you're producing alloy at home it's not so important. My aluminum is not pure, that's aluminum alloy (usually several different aluminum alloys). Therefore, I don't think that you'll see any difference between 11 and 12%
Yes, it's called a stress test.
What fuel do you use
Thanks
Thank you. I use charcoal for aluminium and charcoal + coal for everything else. I have a couple videos on my channel about that: 1. How to make charcoal: ua-cam.com/video/S_XNjEKvArc/v-deo.html 2. Hell fuel: ua-cam.com/video/qwK9GZD3lPs/v-deo.html
I'm gonna need some aluminum or magnesium bronze in case the dollar is screwed and we all have to use the Barter way of things again.
Sure, cheaper than gold, but it lasts a lot longer.
:) I don't believe chances of that are high. That will ruin the way of most people life and global economy. Politicians all over the world may seem not smart guys but they are not so stupid. If everything goes wrong than most important is to have a reliable gun with and plenty of ammo ;) I hope everything will be fine and we`ll have a colony on Mars pretty soon as an escape plan.
👍👍👍👍
Hi friend again: how are u? Look I never machined with the lathe aluminum bronze, people says that is toooo hard. I have like 50kg of cooper and my idea is make some alu bronze, if I put 5% or 6% aluminum do you think that can be more softer but better to machine puré cooper. Compared with steel 1045 without temple how hard is? A big hug
Hi. I don't have a lathe, so just asked one person to do that. As I remember he told that it wasn't hard at all to process it. About 5-6% of aluminum in the alloy it also makes sense.
What are your opinions on aluminum bronze vs zinc aluminum? Seems like aluminum bronze generally has better strength properties, but is more expensive. Would appreciate any thoughts on comparing the performancr of the two.
It depends what you need it for I guess. I like both alloys :)
For my final years project is effect of degassing agent on nickel aluminium bronze. Can anyone tell me why need to remove oxygen before solidification. Why don't directly remove hydrogen since gas porosity is made by h2o or h2 .
Oh buddy. I've just seen your comment. My degree is not in metallurgy, so I probably won't be able to give you an answer. What I know that the most important is prevent any metal from oxygen to prevent oxidising :) That's why some metals and alloys are melting in inert gases or vacuum.
Check out AlumiTube
Me:eh
*Sees Uzi
Me: ;) okay
Does anyone know if you can reverse the alloy back to copper and Ali?
Yes. It's possible but expensive as I understand
Can I make brass by melting zinc and copper just like this? I cannot find a source for brass locally 😩
Hi Francisco. Of course you can. The only thing is that it's very important to be caution because zinc is harmful for human body if a person breath it. Zinc will start burn very quickly. You can see yellow fume above the crucible in my videos where I melted brass. As I know usually the only advantage of brass comparing to bronze is a price. Brass is much cheaper than bronze. There is a good and simple source of information about different copper alloys where you can choose which one to make: en.wikipedia.org/wiki/List_of_copper_alloys
At long last i found a video on casting aluminum copper :D quick question qhen you 88% copper and 12 % aluminum are referring to their weights ?
Yes Eugene. You're right. Mentioned percentage is by weight. The only thing that aluminum of course is not pure. It's aluminum alloy which probably contain 20-30 % of silicone and much less of other metals. Anyway, I've already casted some staff using this aluminum bronze and can say that result is very good! :) I'm totally satisfied. If you're interested in such staff don't forget to subscribe. Greensand casting using this bronze will be in the future!
Dural Metalurg sweet ^^ thanks for the tutorial :)
You're welcome :)
Dural Metalurg keep up the good work and consider me a subscriber X3
Thank you buddy :)
Beautiful Video, Greetings from India 🇮🇳
Thank you ;)
i read on one site that said this was "white brass" but i guess they're mistaken?
Well there are different ways to get "white" colour metal with copper. On my channel there are 2 of such alloys: White Bronze - home melting techniques. High Leaded Bronze production - ua-cam.com/video/U839v3-M6xE/v-deo.html and German SIlver from coins. Melting Nickel Silver and casting bars - ua-cam.com/video/v3xlzcKA3ao/v-deo.html You can check and see that these metals are really white (silver, gray). Aluminum bronze has yellow colour.
Hi ,,we have metal powder of 40 microns of Copper and Aliminium ,,do u think if we mix the same ratio of u did may give same champaign color for decoration purposes?
Hmm. It's hard to say if mix of fine metal dust can form the same colour. I would recommend to test it on a very small amount. When you melt several metals together you create other crystal lattice. Only test can give you right answer. Good luck with the test.
You can get thermite reaction if you mix copper oxide and aluminium .... so be careful if you're working with powders!
Great vid! Doing this soon.
Thank you. Good luck ;)
how strong is the alum brass . can you make machine parts out of it and will they hold up as steel?
One of the strongest anyone can make at home :) There is a video where I compared 10 different alloys: ua-cam.com/video/7mA8hLcpL38/v-deo.html
Manganese is very strong and cheap as well though nothing is close to high quality steel! ;)
How would it work as a knife blade. Like if I was to make some and do a metal cast.
Caleb Williams It will work but the question how hard should be a knife. I mean, as I know, usually hardness of steel for a knife is between 40-55 HRC. This bronze is about 25-30 HRC. It will work for cutting but it's much softer than steel which is used for knives.
Try using flux and a degassing agent. Salt, borax powder, welding flux, etc.
Yes, you're right. It wasn't a finished project. That's why I didn't use flux. I usually use borax when melting brass or bronze. This aluminum bronze was made for a project which you will see on my channel. :)
So uhm can u basically make a bulletproof chassis for a homemade tank with this?
I don't think so :) To make something bulletproof you need to use special bulletproof steel. That's why tanks covered with bronze don't exist
@@DuralMetalurg ok i may have used the wrong word, so can my tank be "bullet resistant" with this?
@@panzerofthelake1623 It depends on the thickness... In theory yes but in the real life it makes no sense :)
Might as well use basalt fiber for bulletproofing.
Hello . would you know how to melt copper and zinc to make brass?
Hi. The technology is the same but there is one important thing. Zinc will start burning when you will add it into copper. First of all fumes are toxic and the second issue is that a lot of zinc will burn. That's why in my opinion aluminum bronze is a good alternative to brass.
I understood . but; is it true that melting copper and zinc together does less waste?
I've melted brass before and can say that it looks like there is a lot of dross on the surface. Though my brass scrap was always covered with oxides. When you add zinc to copper it starts burning very fast. It seems to me that most of it burns.
Awesome video bro. Your features looks Arabic :)
Thank you. I'm glad that you have found something native :)
It seems like cu percentage is too much
That's a link on wikipedia: en.wikipedia.org/wiki/Aluminium_bronze Aluminum is usually from 4 to 12%, other metals are about 2-5% and the rest is copper.
Dural Metalurg yeah i have already checked it but my point of view was about do a new experiment because this material looks like copper may be by the mixture of more aluminum we may could get a better golden colour
Oh maybe it looks like that because of camera. In fact, my aluminum bronze is yellow and copper is very red :)
Nice video! I wonder where you are from that you write both "centre" and "aluminum"?
Thank you. I'm from Ukraine. At school and university I studied mostly Grate Britain version of English. :) I've past IELTS exam 2 years ago and on exam you can use any type of English language or combine several versions. It's considered fine to use American, GB, Australian, Canadian or any other official English language :) I thought that both words "centre" and "aluminum" are GB English and "centre" and "aluminium" are American versions :) I'm in Canada now, to be exact one month already. Canadians write "centre" and I don't know how they write "aluminum" :)
Very interesting, thanks. In GB "aluminium" is the standard. In USA we write and say "aluminum".
The history of the name of this metal is interesting, should you care to read about it. en.wikipedia.org/wiki/Aluminium#Etymology
Basically a British scientist thought aluminium sounded better back in the eary 1800s and that is why there's a difference.
Ok. I see. In my native language it sounds like "aluminiy" :) It's nice that there are a lot of words in different languages that sounds the same or practically the same :)
I think you should add some more Aluminum and some iron nickel and tin to get best results
Yes, you're right. There will be much more complex bronzes on my channel in the future. Quantity of aluminum is fine according information from different websites. To melt iron and nickel the temperature should be much higher about +300 degrees.
Dural Metalurg more higher than 300... and i will for your next move actually i am too finding something like this
Dural Metalurg do you have any idea to make casted stainless steel soft for better fabrication
mohammad gulzaib Well, stainless steel is a tricky thing :) First of all, to make really quality stainless steel electric furnace should be used. Also for a lot of grades vacuum or inert gases are supposed to be used to prevent a contact of metal and air. The second problem is temperature. You should reach from 1500 to 2000 C. It depends on the grade. Without heat treating and forging stainless still will be pretty soft ;)
Dural Metalurg thank you i also thinking about induction furnace because in nowadays we are using coal traditional furnace we are casting some product but the problem is we getting our products brutally hhrd thats why i am asking
C954 is best aluminum bronze.
Well. It's definitely not bad. If we speak about hardness than C955 must be better :) It contains not just iron as 954 but nickel as well. Both bronzes are harder to make at home than just to add aluminum into copper.🙂
@@DuralMetalurg AMPCO 26 is the hardest.
@@AngryOrbifold Thank you for the information. I've found that it's 43 HRC!!! That's amazing. I'll try to find more information about it
@@DuralMetalurg You are welcome. Unfortunately the chemical composition is a secret but by looking at the physical properties I guesstimate that it has between 14.5 and 15% aluminium and around 5% iron, maybe also a bit of manganese (1 to 2%). It may be interesting to try making it and also hardening it ! ha.
вроде русский канал а в комментах одна иностраншина
Канал украинский. UA-cam позволяет добавлять другие языки в описание и название видео. Пользователь видит название и описание на том языке который установлен как базовый у него на компьютере. Основной язык канала английский. Тема плавки металлов более всего интересна в США, Австралии, Британии и т.д. Слово "иностранщина" :) несет негативный оттенок. В комментах люди с разных частей мира, которых объединяет интерес к плавке и литью металлов.
Dural Metalurg
Втулки балансира камаз а можно лить ? Потом какая обработка ?
@@СтаниславНикитин-л7р К сожалению не могу ответить на данный вопрос
Also if you increase the Al content a bit more the bronze will quench harden unlike other copper alloys
Thank you. It's really hard! Usually I prepare before melting, so similar alloy are produced commercially. Of course I couldn't use pure aluminum and add such metals as lithium but it's the best I could make at home. I think that I haven't seen bronzes which contain more than 12% of aluminum. I don't say that they don't exist just I haven't seen them :) Anyway, with 12% of aluminum it's hard enough. There will be a real test in the future videos. As I remember this bronze is harder than 20 HRC (like a soft steel).
Quench hardening aluminium bronze have usually between 10 and 12 % aluminium by weight, above 12% the alloy becomes very brittle. You can't find commercial alloys with more than 15% aluminium.
Could you tell me what i could add to cast aluminum to make it more brittle to make bells with a metal close to melting point of aluminum?
Oh. Sorry. I'd like to give you some tip but to be honest I have no idea :) In theory, silicon can make aluminum brittle.
So you just heat them together by weight? What stops one metal from just coming to the surface above the other?
To be honest metals casting theory is not my field of expertise :) People spend 4-5 years in the university to understand how it works on molecular level. You always need to mix it to be sure that metals are not separated. The hardest for me was to mix copper and lead to make lead bronze. I've read before casting that it's important to cast this metal right after mixing. Otherwise metals will divide into layers. With aluminum bronze it's not hard. You need to melt metals and mix them. After that they become new alloy :)
@@DuralMetalurg thanks for your reply! Interesting to learn how complex it is and how it's done in practise
@@-__-_-_--__--_-__-_____--_-___ You're welcome :) Pretty easy in practise but can be really complex in theory :)