frame metallurgy

gregrobo · Post by **gregrobo** » May 30th, 2009, 2:34 am

can anyone tell me what grade of aluminium the standard cr crf frames are made of or where to start lookingfor the relevent info?

juddy · Post by **juddy** » May 30th, 2009, 6:32 am

As far as I know its the 6061 T6,same as what everyone makes the new frame rails from.Didnt you mention Atlas metals has that stuff in Kal ? Cant say for sure,thats just through the grapevine.....

dannygraves · Post by **dannygraves** » May 30th, 2009, 8:19 am

I've heard that different parts are different grades. like some parts are t7 and others t6... kinda weird..

Bean · Post by **Bean** » May 30th, 2009, 10:21 am

frame rails are 6061 t6
most of the cast on crf's is said to be 6000 series alloy
only honda knows for sure

gregrobo · Post by **gregrobo** » May 30th, 2009, 6:56 pm

juddy wrote:As far as I know its the 6061 T6,same as what everyone makes the new frame rails from.Didnt you mention Atlas metals has that stuff in Kal ? Cant say for sure,thats just through the grapevine.....

yeah i did say that because i got the last lenght i want to know what the rest of the frame is, if the rest of the frame is 6000 sieries ali then there is no reason to use 6061 t6

cryzsurfer · Post by **cryzsurfer** » May 30th, 2009, 7:07 pm

I had my Y piece from my 04 CRF250 zapped at work and it was definitely 7XXX series. It was done with a machine that is calibrated and used for flight hardware, so I'll be satisfied with the results. I didn't zap any of the small tube like the down tube cradle so I wouldn't be surprised if it was 6xxx series.
Craigus

gregrobo · Post by **gregrobo** » May 30th, 2009, 7:37 pm

this is the delema 6000 sieries chemical comp is magnesium and silicon
7000 sieries is mainly zinc and the t6 part is the temper

i aproached a supplier for more 6061 and their answer was its not a stock item anywhere and if we wanted it i would have to order 500kg of it thats a lot of conversions

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