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1、STD*JIS G OSb7-ENGL 1998 4933608 055b498 7Y4 J IS JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association JIS G 0567:18 Method of elevated temperature tensile test for steels and heat -resisting alloys b I ICs 77.040.99 Descriptors : ferrous metals, heat-resistant
2、materials, tensile testing, refractory Reference number : JIS G 0567 : 1998 (E) metal alloys, high-temperature testing 5s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo repr
3、oduction or networking permitted without license from IHS -,-,- G 0567 : 1998 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in acc
4、ordance with the Industrial Standardization Law. Consequently JIS G 0567 : 1993 is replaced with JIS G 0567 : 1998. Attention is drawn to the possibility that some parts of this Standard may conflict with a patent right, application for a patent aRer opening to the public, utility model right or app
5、lication for registration of utility model after opening to the public which have technical properties. The relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying the patent right, application for a patent after opening to the public, utility model righ
6、t or application for registration of utility model after opening to the public which have the said technical properties. Date of Establishment: 1966-12-01 Date of Revision: 1998-12-20 Date of Public Notice in Official Gazette: 1998-12-21 Investigated by: Japanese Industrial Standards Committee Divis
7、ional Council on Iron and Steel JIS G 0567 : 1998, First English edition published in 1999-08 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final autho
8、rity. * I I L O JSA 1999 All rights reserved. Unless otherwise speafied, 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 the publisher. Printed in Japan Copyright
9、 Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- - STD-JIS G OSb-ENGL 1798 m 4733b08 055b500 122 W JAPANESE INDUSTRI
10、AL STANDARD JIS G 0567 : 1998 Method of elevated temperature tensile test for steels and heat-resisting alloys I Introduction This Japanese Industrial Standard is prepared by the correspond- ing International Standard on the corresponding part based on IS0 783 : 1989 Me- tallic materials-Tensile tes
11、ting at elevated temperature without changing the technical contents. However, in JIS, a test piece with a collar which has been used tradition- ally, is specified. This is because the test piece with a collar secures fitting opera- tion of an extensometer to obtain further accurate material charact
12、eristic value, and is used domestically. 1 Scope This Japanese Industrial Standard specifies the method of tensile test for steels and heat-resisting alloys at temperature exceeding ordinary temperature. Remarks : The corresponding International Standard is shown as follows. IS0 783 : 1989 Metallic
13、materials-Tensile testing at elevated tem- perature 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards indicated below shall be applied. Verification ofthe forc
14、e measuring system of the tensile testing ma- chine Verification of extensometers used in uniaxial testing JIS B 7721 JIS B 7741 JIS C 1602 Thermocouples JIS G 0202 Glossary of terms used in iron and steel (testing) JIS Z 2201 Test pieces for tensile test for metallic materials JIS 2 2241 Method of
15、tensile test for metallic materials JIS Z 8704 Temperature measurement-Electrical methods 3 Definitions For the main terms used in this Standard the defmitions in JIS G 0202 apply,.and the symbols and definitions to be used subjected to the agreement between the supplier and the purchaser are as fol
16、lows. a) gauge length 1) original gauge length (Lo) Gauge length before application of force. 2) final gauge length (Lu) Gauge length after rupture, the two pieces hav- ing been carefully fitted back together so that their axes lie in a straight line. b) extensometer gauge length (Le) c) elongation
17、Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS G OSb7-ENGL 3978 m 4733608 055b50L Ob7 2 G 0567 :
18、1998 percentage elongation 1) percentage elongation after fracture (A) Remarks 1 In the case of proportional test pieces, when the proportional constant is not 5.65, the symbol A is to be supplemented by a subscript designating the coefficient of proportionality used. 2 In the case of non-proportion
19、al test pieces, the symbol A is to be supplemented by a subscript designating the original gauge length expressed in mm. 2) percentage reduction of area (2) maximum force (Fm) stress Force at any moment during the test divided by the original cross-sec- tional area (So) of the test piece 1) tensile
20、strength (Rm) 2) yield stress 2.1) upper yield stress (Reh) 2.2) lower yield stress (Rel) 3) percentage total elongation at fracture (At) proof stress of non-proportional elongation (Rp) The symbol to be used is to be supplemented by a subscript designating the specific value. Principle The test con
21、sists of straining a test piece by tensile force, generally to fracture, for the purpose of determining one or more of the mechanical properties defined in clause 3 . The test is carried out at the specified temperature, which is greater than the ambient temperature. 5 Test piece The test piece shal
22、l be as specified in JIS Z 2201. Remarks 1 The test piece is generally a proportional test piece of a circular section, and its shape and dimensions are as given in Remarks figure 1, Remarks table 1, and Remarks table 2. 2 In the case where the test piece of a circular section can not be sampled, a
23、platy test piece may be used. 3 The tolerance on the dimensions of the parallel-sided part is in ac- cordance with 6 of JIS Z 2201, and the working method of the test piece is in accordance with 5 of JIS 2 2241. However, for the type II test piece, the tolerance applies to the parallel-sided portion
24、 within the gauge length. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 G 0567 : 1998 %e I test piece
25、9, Type II &est piece A .+ I- L P EdargedpartA 6 Note * For respective parts of the part A, the following values are their aimed values. (Unit : mm) D = D + 0.2 0 3 = 0 1 + 1.8 D = D + 2 . 0 R = 0.5 e= 900 Remarks Fig. 1 Shape of test piece Remarks Table 1 Dimensions of type I test piece Unit: mm Re
26、marks Table 2 Dimensions of type II test piece unit: mm Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 4
27、G 0567 : 1998 600 or under Over 600 up to and incl. 800 6 Testing apparatus -c3 -r-4 6 . 1 a) Tensile testing machine The tensile testing machine shall be as follows: The testing machine shall be in accordance with grade 1 and upward of JIS B 7721. b) In the case where a: test piece is tightly seale
28、d in a vessel in order to perform testing in a vacuum or in a special gas, necessary corrections shall be made in order to obtain the true force on the test piece. 6.2 Heating device When a test piece is heated, a heating furnace equipped with a temperature adjusting device and capable of heating al
29、l over the range of the gauge length of the test piece evenly and constantly within a permissible range of Table 1 throughout the testing, shall be used. For temperatures of over 1 O00 OC, these shall be as agreed upon between the purchaser and supplier. Table 1 Permissible range of temperature of t
30、est piece unit: “C r Temperature range I Permissible range +5 I I Over 800 up to and incl. 1 O00 I 6.3 Temperature-measuring equipment The temperature-measuring equipment shall be as follows: a) Measuring instrument The measuring instrument to be used shall be suffi- cient to guarantee that the temp
31、erature of a test piece is kept within a permis- sible range of 6.2, all over the measuring range of the temperature. Thermocouple For the main part of a thermocouple the descriptions given in JI6 C 1602 apply, and the rest thereof shall be as follows: 1) The materials of a thermocouple capable of s
32、ufficiently enduring the test temperature shall be used. Further, the diameter of the element wire should preferably be made as small as possible in a range where the thermoelectromotive force may not be varied while it is used. The thermocouple may be calibrated also by extracting the representativ
33、e thermocouple out of the lot of element wires to be used. The measuring junction of the thermocouple shall make good thermal con- tact with the surface of a test piece and be suitably shielded as to avoid thermal radiation from the furnace walls. Further, the part of the ther- mocouple placed in a
34、furnace shall be insulated. When other thermometers than a thermocouple are used, ones at least equiva- lent precision to the thermocouple shall be used. b) 2) 3) 4) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie No
35、t for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 G 0567 : 1998 c) Calibration of temperature measuring equipment The temperature mea- suring equipment, which is calibrated within a period not exceeding one year for all the motion range, sh
36、all be used. 6.4 Instrument for measuring elongation In determining proof stress, an ex- tensometer shall be used. The extensometer capable of measuring elongation on both sides of the test piece, which is of grade 2 or higher specified in JI$ 3 7741, shall be used. Cares shall be taken to ensure le
37、st the protruded portion of the extensometer outside the furnace should be influenced by variation in temperature. 7 Testing method 7.1 Heating method A test piece shall be heated to the test temperature and shall be maintained at that temperature for about 15 min before testing. However, maintenanc
38、e for 10 min or longer may apply according to the necessity. The test piece shall not be heated exceeding the specified temperature. 7.2 Loading method When yield point or proof stress is obtained, the test piece is continuously loaded until the stress reaches the yield point or proof stress, and th
39、e strain rate between the gauge marks of the test piece in its vicinity shall be, as a rule, 0 . 3 %/min. If necessary, a strain rate of 0.1 %/min to 0.5 %/min may be also applied. Further, when the strain rate above-mentioned can not be achieved, it may be loaded at 300 N/(mmZ-min) or under stress
40、increase rate. Furthermore, when stress control is applied, the said point shall be stated in the result report of the test. Until the stress reaches rupture after it has exceeded the yield point or proof stress, the relative moving speed between the upper and lower grips shall be generally 7.5 %/mi
41、n of the parallel-sided portion of the test piece. If necessary, it may be loaded at a strain rate of 2 %/min to 20 %/min. When the yield point or proof stress is not obtained, it may be loaded at this speed at the beginning. 7.3 Measuring method for temperature For the main portion of the measur- i
42、ng method for temperature, the description specified in JIS Z 8704 applies, and the rest portion thereof shall be as follows: The temperature of the test piece of which a gauge length exceeds 50 mm shall be measured at three points, namely both ends vicinity and middle part of the gauge length, and
43、a mean value thereof shall be taken. When the gauge length is not more than 50 mm, the thermocouple at the middle part may be omitted. Furthermore, if comes within the permissible range in 6 b), the number of thermocouples may be reduced. 7.4 Measuring method for elongation In order to obtain the yi
44、eld point and proof stress, continuous recording of elongation or sufficient number of measurements of elongation for describing a stress-strain curve shall be made. * it is able to confirm preliminarily that the temperature distribution of the test piece , Copyright Japanese Standards Association P
45、rovided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:15:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 6. G 0567 : 1998 7.5 Methods for obtaining the original cross-sectional area, gauge length, yield po
46、int, proof stress, tensile strength, elongation and reduction of area in the parallel-sided portion of test piece The methods for obtaining the origi- nal cross-sectional area, gauge length, yield pint, proof stress, tensile strength, elon- gation, and reduction of area in the parallel-sided portion
47、 of a test piece shall be principally in accordance with JIS Z 2241 and 3 (definition), and the rest part thereof shall be as follows. I I a) b) Yield point The yield point shall be determined by taking the lower yield point. When indistinct the lower yield point shall be apparently described. Marki
48、ng of the gauge marks The gauge marks of a type I test piece shall be, as a rule, marked with a punch or scriber. However, when the properties of the test piece are sensitive to surface flaws, the measurements of elongation after rupture may be carried out by marking on the shoulder of the test piece, or by using overall length of the test piece or other appropriate lengths. Remarks : When a type II test piece is used, cares shall be taken for the test- result that the elongation becomes a little less than that when the type I test piece is used. 8 Report When a test report is req