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overtorquing

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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004204
EISBN: 978-1-62708-184-9
... at the top of the nozzle also makes it susceptible to damage due to overstressing. The two situations that can cause overstressing of the nozzle and lead to possible failure are overtorquing and overstressing by the attached piping. Overtorquing of bolts or clamps used to secure nozzles on glass-lined...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
... in ductile fractures in overtorqued fasteners. In fatigue fractures, ratchet marks are the result of multiple fatigue-crack origins, each producing a separate fatigue-crack zone ( Fig. 6 ). As two approaching cracks meet, a small step is formed. The small steps are the ratchet marks. Although ratchet...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... threads, such as pipe threads, which can cause excessive stress. Fig. 5 Molded-in threads Other factors that should be considered are: If the mating part is metal, overtorquing will result in part failure. Feather edges on thread runouts should be avoided to prevent cross threading...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... were within specifications. Unused fasteners and nuts from the same batch were installed in a simulated joint in an effort to duplicate the head cracking. Overtorquing of the fasteners caused nut-thread stripping at torques of 10.2 to 11.3 N · m (90 to 100 in. · lb). Additional torque tests using...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... the same batch were installed in a simulated joint in an effort to duplicate the head cracking. Overtorquing of the fasteners caused nut-thread stripping at torques of 10.2 to 11.3 N · m (90 to 100 lbf · in.). Additional torque tests using stronger steel nuts stripped the fastener threads but did...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004208
EISBN: 978-1-62708-184-9
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... aluminum-zinc alloy connector exposed to a semiindustrial atmosphere caused failure by SCC in less than one month. This connector had been overtorqued during tightening to seal the assembly for a preservice hydrostatic test. In this case, too, substitution of straight-threaded connections reduced...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004210
EISBN: 978-1-62708-184-9