In the present study, a comparative evaluation was conducted of the SSC performance of UNS S17400 (17-4 PH)* stainless steel allthread manufactured by conventional machining and cold roll threading processes. The tests were conducted in NACE TM0177-90A solution. It was found that roll threading resulted in higher threshold stress levels and post-test residual load carrying capability than observed for machined allthread. Additionally, the hardness limit for SSC in UNS S17400 in the roll threaded configuration appears to be greater than the HRC 33 max. given in NACE MR0175-92.1 

Subject
Test methods, Fixtures, Materials, Machinery, Rolling, Machining, Stress, Mechanical failure, Risk reduction, Sulfide stress cracking, Hardness, Heat treatment, Residual stress
Keywords:
stainless steel, sulfide stress cracking, threading, bolting, fasteners
© 1993 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1993
Association for Materials Protection and Performance (AMPP)
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