Technical & Reference Section > Tech and Restoration

i need some metal

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motomagII:
i just got myself a frame and need some metal for a repair .it needs to be 4130 chromo plat plate not tube for bottom gusset a piece around 4 inch square will be good

i take it couple people here mioght know what i just won on ebay

YGT:
Ask malo at pir-bmx.com ...... he imports 4130 for his handmade frames.

bof:
Greg if its just a small piece of plate steel you are welding onto a frame I wouldnt worry about it being cromoly any steel would do . what thickness are you after I might be able to help with some plate steel   :daumenhoch:

motomagII:
1.3 or 1.4mmthick and about 3 or 4 inch square .was just thinking rest is chromo so different metals when welding might have different weld/heat resistance temperatures?

cant wait for this to turn up from the usa get it welded and ready for the summer series .gonna ride it like i stole it lol

mattfx81:
Id go for mild steel plate aswell as the welder will most likely use a mild steel wire A15(ers70-s2) for the welding. A 4130 welding wire is only used on 4130 when the job is going through a heat treatment process post fabrication so that the whole job contracts and expands at the same rate (in theory).

Matt

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