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Torsion bar suppliers?

Torsion bar suppliers?

Torsion bar suppliers?

(OP)
Hello,

I'm looking for any suggestions for suppliers for torsion bars.

Our spec is 1/2" bar - 80" long.
Current material spec is EN47 Bright drawn steel.
Finish: HEATED TO 930C FOR 15 MIN, OIL QUENCHED AND TEMPERED @ 480C FOR 60 MIN.
429-461 BRINELL (3000lb, 10 DIA, 2.85-2.95 INDENT)
STRAIGHTNESS 1/8" - 5/16" MAX IN 5'
80"±1/8"

Could use any material that would meet the application below:

Torsion bar will be pre-loaded 20 to 55 degrees.
Approx. 2000 cycles per year of 90 degree rotation
Operating temperature -20 deg F to 120 deg. F
Exposed automotive application. (Weather and road treatments)

Thanks,
WEK

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