SOUTH AFRICAN NATIONAL STANDARD

Transcription

1 ISBN Edition 3 ISO 898-1:2009 Edition 4 SOUTH AFRICAN NATIONAL STANDARD Fasteners Part 5: General requirements and mechanical properties Section 1: Mechanical properties of fasteners made of carbon steel and alloy steel Bolts, screws and studs This national standard is the identical implementation of ISO 898-1:2009 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: Fax: SABS

2 Edition 3 ISO 898-1:2009 Edition 4 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 2, Screw threads and fasteners, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in January This SANS document supersedes SANS :2003 (edition 2).

3 INTERNATIONAL STANDARD ISO Fourth edition Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread Caractéristiques mécaniques des éléments de fixation en acier au carbone et en acier allié Partie 1: Vis, goujons et tiges filetées de classes de qualité spécifiées Filetages à pas gros et filetages à pas fin Reference number ISO 898-1:2009(E) ISO 2009

4 ISO 898-1:2009(E) Licensed exclusively to SABS. PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax copyright@iso.org Web Published in Switzerland ii ISO 2009 All rights reserved

5 ISO 898-1:2009(E) Contents Page Foreword... iv 1 Scope Normative references Terms and definitions Symbols and abbreviated terms Designation system for property classes Materials Mechanical and physical properties Applicability of test methods General Loadability of fasteners Manufacturer's control Supplier's control Purchaser's control Feasible tests for groups of fasteners and machined test pieces Test methods Tensile test under wedge loading of finished bolts and screws (excluding studs) Tensile test for finished bolts, screws and studs for determination of tensile strength, R m Tensile test for full-size bolts, screws and studs for determination of elongation after fracture, A f, and stress at 0,004 8 d non-proportional elongation, R pf Tensile test for bolts and screws not expected to break in free threaded length due to head design Tensile test for fasteners with waisted shank Proof load test for finished bolts, screws and studs Tensile test for machined test pieces Head soundness test Hardness test Decarburization test Carburization test Retempering test Torsional test Impact test for machined test pieces Surface discontinuity inspection Marking General Manufacturer's identification mark Marking and designation of fasteners with full loadability Marking and designation of fasteners which, because of their geometry, have reduced loadability Marking of packages...53 Annex A (informative) Relation between tensile strength and elongation after fracture...54 Annex B (informative) Influence of elevated temperatures on mechanical properties of fasteners...55 Annex C (informative) Elongation after fracture for full-size fasteners, Α f...56 Bibliography...57 ISO 2009 All rights reserved iii