[Fot] ARP and other additions to the bolt material strength chart
vfracing at aol.com
vfracing at aol.com
Sun Jan 16 10:09:31 MST 2022
Good point, Ken;
This chart was made so that the used original fasteners can be replaced with new ones of equal or greater strength!
Regards
Phil
-----Original Message-----
From: kknight at klaenv.com
To: vfracing at aol.com
Sent: Sun, Jan 16, 2022 10:49 am
Subject: RE: [Fot] ARP and other additions to the bolt material strength chart
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All great information to have, well done sir.
Everyone should remember that bolts are consumable items. Any stressed bolt in a race engine or suspension has a life expectancy. No one should be using ANY critical fastener in a race motor that is original. A few dollars spent could save thousands! If it is critical in your suspension your butt is on the line if it fails. Better safe than sorry. Good racing all.
Ken
From: Fot <fot-bounces at autox.team.net> On Behalf Of Phil Gott via Fot
Sent: Sunday, January 16, 2022 6:58 AM
To: fot at autox.team.net
Subject: [Fot] ARP and other additions to the bolt material strength chart
Amici:
Joe Boruch suggested that ARP bolt materials be added to the chart and Mike Harmuth suggested pdf format, so here they are!
Also added is the sometimes used British nomenclature of noting the tensile strength range, measured in tons per square inch, instead of a letter designation.
Remember, tensile strength is not the only consideration. Ductility and fatigue life are also critical, as are thread formation and location. For example, note that wheel studs, critically loaded components, are not made of the strongest material. SAE wheel studs have a tensile strength similar to a grade 5 bolt but have a special composition all their own to withstand millions of reverse loading cycles without fatigue.
Enjoy!
Phil Gott
|
Bolt Grade
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Minimum Tensile Strength (000 psi)
| |
| | |
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AN***
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SAE*
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British**
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ARP****
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Metric*
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50
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60
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70
|
80
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90
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100
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110
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120
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130
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140
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150
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160
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170
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180
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190
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200
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210
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220
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230
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240
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250
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260
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270
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280
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290
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300
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310
| | |
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2 > 3/4"
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60
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2 to 3/4"
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74
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P
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70-90
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Q
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80-100
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R or "45-55"
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90-110
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S
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100-120
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T
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110-130
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8.8 to 16mm
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116
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8.8 > 16mm
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120
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5
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120
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| | |
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All
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125
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| | |
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U
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120-140
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V
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130-150
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W
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140-160
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8
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150
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10.9
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151
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X
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150-170
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Y
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160-180
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12.9
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177
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Titanium
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180
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8740
|
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180-210
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ARP 2000
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220
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L19
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260
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625 Plus
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260-280
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| | |
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ARP 325
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260-280
|
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| | |
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Aermet
|
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290-310
| | |
|
Sources: *Bolt Depot Inc. and **Trojansf.co.uk/technical/fastener-grades and ***Skyshop and ****ARP web page. ARP bolt grades are registered trademarks of ARP or CRS Holdings Inc.
| | |
| | |
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