Materials

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Ryan Jubera

Senior Member
Apr 12, 2008
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With our new machining endeavor. I wanted talk about materials seeing that we have engineers and machinist on here and I am neither.

The materials we will be using.

Steel
- 4130
-4140 anealed/ hardened
-1018

Aluminium
-6061 T6
-2024 T4
-7075 T6

Ok so let's start with steels.

-4130
Thinner material being that thicker peices can't be heat treated all the way through to get to 4130. Cant remember at what thickness the heat treat stops. Good for thinner parts that will be welded and heat treated.


-4140
Comes in anealed and hardened. From what i read annealed is easier to weld. Hardened will lose it hardness in heat affected zones meaning re heat treat. + side is hardened will be nice for parts that won't be welded with no need to heat treat like anealed.

-1018 cold rolled

Good all around material and not expensive.

Aluminium

-6061 T6
Good yield strength. Decent price good material. Good machineability and weldable.

-2024
Higher strength than 6061 good machineability. No weldable. Price comparable to 6061. Not super familiar with this material.

-7075
Very high yield strength. Good machineability. High price.

Sources for material.
-IMS lots of 6061 rems
-McMaster have to pay for shipping.

Most alum parts that will be made will not be welded.

This is all based on research I have done over the years and learned from others. If I am wrong fell free to correct me. Lol

Thoughts?






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Ryan Jubera

Senior Member
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4340 is a good machined steel option.
7075 where you can afford it. 6061 elsewhere.

I never worked with 2XXX series AL stuff so IDK about that.

NEVER buy stock from McMaster unless it is the last option.
Almost always guaranteed to get the worst price.
Any other places to source material? I know there is calamesa and a place called K and H I believe. Calamesa has always been higher than everyone else.

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dsrtrcr01

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Jan 31, 2005
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Any other places to source material? I know there is calamesa and a place called K and H I believe. Calamesa has always been higher than everyone else.

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I have bought metal from Tusker metal supply in Temecula... By the DMV, behind VFW. Not sure how prices range or what but thought I would throw it out there for you to look into.
 

stockerwithalocker

Junior Member
Aug 17, 2007
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CA
Try coast aluminum

For the chromoly you can try fry steel although they may not be the cheapest. Be sure to look at the report and look for the as delivered strength not the strength it will be after heat treat. Some of them are confusing and some of the reps quickly look and give the wrong info.

1018 you should be able to get almost anywhere and i’d shop around.
 

Turboyota

Senior Member
Mar 29, 2017
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+1 for Coast

Aluminum: Trident Metals always gave me the best prices on 6061 & 2024



Thick chunks of 4140 & 4340: CalMesa Steel

EMJ is a good source for lots of stuff.

http://www.cms-eng.com is good for large stuff

I’ll ask the Ameribrade dudes where they buy from...
 

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