BS EN ISO 204:2018 – TC:2020 Edition
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Tracked Changes. Metallic materials. Uniaxial creep testing in tension. Method of test
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 139 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | National foreword Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication |
| 5 | ForewordEuropean foreword |
| 7 | Foreword |
| 9 | Introduction |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions 3.1 3.1.1 original reference length Lro 3.1.2 final reference length Lru 3.2 |
| 13 | 3.103.12 |
| 16 | 3.173.24 3.183.25 3.193.26 3.203.27 3.213.28 3.223.29 |
| 17 | 4 Symbols and designations Table 1 — Symbols and designations |
| 18 | Table 1 (continued) |
| 19 | Table 1 — Symbols and designations |
| 21 | 5 Principle 6 Apparatus 6.1 Testing machine. 6.2 ElongationExtension and elongation measuring devices. |
| 22 | Table 2 — Permitted deviations between TiTc and T and maximum permissible temperature variation along the test piece |
| 23 | 6.3.2 Temperature measurement. 6.3.2.2 Calibration of the temperature measuring equipment. 6.3.2.26.3.2.3 Single test piece machines. |
| 24 | 6.3.2.36.3.2.4 Multiple test piece machines. 6.3.3 Calibration of the thermocouples and temperature measuring system |
| 26 | 7 Test pieces 7.1 Shape and dimensions 7.1.1 Shape and dimension of smooth test pieces |
| 27 | Table 3 — Shape tolerances of test pieces with circular cross-sections Table 4 — Shape tolerances of test pieces with square or rectangular cross-sections 7.3 Determination of the original cross-sectional area |
| 28 | 7.4 Marking of the original gauge length, Lo 7.5 Determination of the reference length, Lr |
| 29 | 8.3 Test interruptions 8.3.1 GeneralPlanned interruptions of the test |
| 30 | 8.3.2 Multiple test piece machine with several test pieces in line 8.3.3 Combined test 8.3.38.3.4 Accidental interruption of the test 8.4 Recording of temperature and elongation or extension 8.4.1 Temperature 8.4.2 Elongation and extension |
| 32 | 11.2 Final uncertainty 12 Test report |
| 33 | Figure 1 — Schematic stress-elongation — Extension diagram |
| 35 | Figure 2 — Examples of test pieces 3) |
| 38 | Figure 3 — Elongation-time diagram |
| 43 | A.4 Concluding remarks |
| 44 | Annex B (informative) |
| 45 | Annex C (normative) C.1 General C.2 V-notched test pieces Table C.1 — Examples of dimensions of notched specimenstest pieces with circular cross-sections and with an elastic stress concentration factor Kt = 4,5 ± 0,5 [3][10] |
| 46 | Figure C.1 — Combined notched and un-notchedunnotched test piece Figure C.2 — Geometry of the test pieces type DIN, BS and E |
| 47 | Figure C.3 — Schematic diagram of a notched test piece with a circular cross-section |
| 49 | D.2 IntroductionPurpose D.3 Statements of uncertainty D.3.1 Background |
| 51 | Figure D.1 — Outline procedure for estimation of uncertainty |
| 52 | Figure D.2 — Detailed procedure for estimating uncertainty in accordance with the GUM |
| 53 | Table D.1 — Range of uncertainties for tp0,2 and tp1 D.4 A reference material for creep testing D.4.1 General |
| 54 | Table D.2 — Certified values for the Nimonic 75 Creep Reference Material, CRM 425BCR425 D.4.2 Using the CRM 425 for assessing uncertainty Table D.3 — Acceptable data range for creep testing using the Creep Reference Material, CRM 425 |
| 55 | Table D.4 — Chemical composition of tested alloy (mass %) Table D.5 — Summary of the creep rupture tests reported by five laboratories TMS-82+, 137 MPa and 1 100 C Table D.5 — Summary of the creep rupture tests reported by five laboratories TMS-82+, 137 MPa and 1 100 C |
| 56 | Annex E (informative) E.1 General E.2 Symbols for strength values and their calculation E.2.1 Strain E.2.2 Creep rupture strength E.2.3 Stress-to-specific-plastic-strain E.3 Specimens E.3.1 Shape and dimension of smooth specimens |
| 57 | E.3.2 Shape and dimension of notched specimens Table E.1 — Examples for dimensions of notched specimens with circular cross-sections and with an elastic stress concentration factor Kt = 4,5 ± 0,5 E.3 Creep testing in single test piece machines and/or multiple test piece machines |
| 62 | Figure E.3 — Linear creep diagram (schematic) |
| 66 | Figure E.3 — Linear creep diagram (schematic) |
| 67 | E.5.2 Graphical extrapolationExtrapolation and creep rupture diagram E.5.3 Extrapolation by means of time-temperature-parameters E.5.4 Other Extrapolation Methods E.6 Test report, recommended additional information |
| 71 | Figure E.4 — Exemplary extrapolation cases in creep strain (rupture) diagram |
| 73 | Bibliography 1 Documents cited in the text |
| 76 | 2 Documents concerning creep testing Documents concerning the thermocouples and measurements of temperatures Documents concerning computer representation of standards |
| 77 | Documents cited in Annex A: Information concerning drift of thermocouples |
| 79 | undefined |
| 81 | European foreword Endorsement notice |
| 83 | Foreword |
| 84 | Introduction |
| 85 | 1 Scope 2 Normative references 3 Terms and definitions |
| 90 | 4 Symbols and designations |
| 92 | 5 Principle 6 Apparatus |
| 96 | 7 Test pieces 7.1 Shape and dimensions 7.1.1 Shape and dimension of smooth test pieces |
| 97 | 7.1.2 Shape and dimension of notched test pieces 7.2 Preparation |
| 98 | 7.3 Determination of the original cross-sectional area 7.4 Marking of the original gauge length, Lo 7.5 Determination of the reference length, Lr |
| 99 | 8 Test procedure 8.1 Heating of the test piece 8.2 Application of the test force |
| 100 | 8.3 Test interruptions 8.3.1 Planned interruptions of the test 8.3.2 Multiple test piece machine with several test pieces in line 8.3.3 Combined test 8.3.4 Accidental interruption of the test 8.4 Recording of temperature and elongation or extension 8.4.1 Temperature 8.4.2 Elongation and extension |
| 101 | 8.4.3 Elongation-time diagram or extension-time diagram 9 Determination of results 10 Test validity 11 Accuracy of the results 11.1 Expression of the results |
| 102 | 11.2 Final uncertainty 12 Test report |
| 107 | Annex A (informative) Information concerning drift of thermocouples |
| 110 | Annex B (informative) Information concerning methods of calibration of thermocouples |
| 111 | Annex C (normative) Creep testing using test pieces with V or blunt circumferential notches |
| 115 | Annex D (informative) Method of estimating the uncertainty of the measurement in accordance with the Guide to the expression of uncertainty in measurement (GUM) |
| 122 | Annex E (informative) Representation of results and extrapolation |
| 132 | Annex F (informative) Computer compatible representation of standards |
| 133 | Bibliography |
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BS EN ISO 204:2018
Metallic materials. Uniaxial creep testing in tension. Method of test Published By Publication Date Number…
