4130 vs. 4140 |
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53caddy
Bolt Sorter Joined: Oct/23/2008 Location: Ooltewah, TN Status: Offline Points: 22 |
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Posted: Dec/10/2008 at 10:41am |
Has anybody in years past used 4140. Also, if nobody has why not.
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2009 UTC Mini Baja
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jarmumd
Organizer Joined: Oct/17/2008 Location: Huntsville, AL Status: Offline Points: 178 |
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I should know this, I used to be the frame designer, but I forgot. As I understand it, you would use 4140 for things like axles and driveshafts. In other words, in race cars 4140 is used for drivetrain parts, 4130 is used for frame construction. If I get some time, I'll try to search for why...
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JHrdy724
Bolt Sorter Joined: Oct/24/2008 Location: AUburn Status: Offline Points: 37 |
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everything i've read seems to lead to 4130 being easier for welding and fab work, and is more readily sold in tube/sheet compared to 4140 which is mainly used in thicker components because it is more readily heat treatable to higher levels (RC40's over RC30's)and machines easier. then again thats just random websurfing. I think Carroll Smith covers this in one of the books
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dillon_b12
Baja Godfather Joined: Nov/15/2008 Status: Offline Points: 781 |
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You are thinking of 4340.
http://books.google.com/books?id=5a8937Pc6uEC&pg=PA64&lpg=PA64&dq=carroll+smith+4340&source=web&ots=QzHFjxweal&sig=b0ELNEFs39MHyiUyrqm1dKGYxkA&hl=en&sa=X&oi=book_result&resnum=1&ct=result |
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jarmumd
Organizer Joined: Oct/17/2008 Location: Huntsville, AL Status: Offline Points: 178 |
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Also called “chrome-moly” steel because of
its main alloying elements (chromium and molybdenum), which give it
good fatigue, abrasion, and impact resistance. Readily formed and
machined in its annealed state and can be heat treated to increase
toughness and wear resistance. Material is a good choice for
crankshafts, gears, axles, and shafts.
Very similar to 4140, but has a lower
carbon content, giving it better weldability and formability while
retaining good fatigue, abrasion, and impact resistance. Use it when
military specifications must be met and for your most demanding
structural applications. Specially designed for applications
involving severe impact, wear, heat, and stress, this highly alloyed
steel (nickel, chromium, and molybdenum) is stronger and more shock
resistant than 4140. |
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53caddy
Bolt Sorter Joined: Oct/23/2008 Location: Ooltewah, TN Status: Offline Points: 22 |
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Well it was just a side thought. The company I work for was saying that they might have had some extra in there tube warehouse. |
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