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bolts
- wireman
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since this has been brought up lately i figured id go right to the source and see what they have to say about strength abilities of differant fasteners.
call me crazy but id say 170,000 psi is pretty damn tough for any bolt
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- testarossa
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I wonder what the "special alloy" Stainless 300 is really made of? I guess if you had ARP make your mount bolts out of that stuff then they would be an improvement over the stock bolts. I'm bettin' that whatever there "special alloy" is, they ain't telling. It's like the Colonel's 11 herbs and spices or the formula for Coke.ARP2000®: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.
I'll grant you that the stainless is an improvement over the stock bolts, but it is the lowest tensile strength option that they list. :whistle:STAINLESS STEEL: Ideally suited for many automotive and marine applications because stainless is tolerant of heat and virtually impervious to rust and corrosion. ARP “Stainless 300” is specially alloyed for extra durability. It’s polished using a proprietary process to produce a beautiful finish. Tensile strength is typically rated at 170,000 psi.
17. Define “Power Dump.”
This is a term used to define the heavy extrusion of the fastener body during forging. The part is forced into a die much smaller than the blank thereby causing a severe reduction in cross section area. This reduction of the cross sectional area is accompanied by an increase in length because metals can’t be compressed. However, power dumping or reduction, delivers a significant increase in strength properties and is part of the patented process we use to produce fasteners from 304 stainless steel with 170,000 psi UTS and AMS 5844 (ARP 3.5) with ultimate tensile strengths in the 270,000 psi UTS range with outstanding fatigue.
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so does anybody else see a problem with bolting together a piece of material with a maximum strength of 63,800 in pretty unstressed aplication with a bolt thats rated for more than double what the frame is rated for? hell the welds holding the frame together are only rated for 60,000 psi on a good day!
THINK ABOUT IT GUYS! :whistle: :woohoo:
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thats why aluminum rods in top fuel motor get tossed after so many runs
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