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1、BRITISH STANDARD AEROSPACE SERIES BS TA 46: 1973 (Superseding BS TA 32 and, in part, BS TA 35) Incorporating Amendment No. 1 Specification for Bar and section for machining of titanium-aluminium- molybdenum-tin-silicon alloy (Tensile strength 10501220 N/mm2) (Limiting ruling section over 25 mm up to
2、 and including 100 mm) UDC 629.7:669.295.571286782.018.23 422.2 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS TA 46:1973 This British Standard, having been approved by the Aerospace Industry Standards Comm
3、ittee, was published under the authority of the Executive Board on 2 February 1973 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference ACE/49 Draft for comment 71/33667 ISBN 0 580 07477 3 A British Standard does not purport to include all the necessary p
4、rovisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and
5、2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.Date of issueComments 3427December 1980 Indicated by a sideline in th
6、e margin Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS TA 46:1973 BSI 02-2000i Contents Page 1Inspection and testing procedure1 2Manufacture1 3Chemical composition1 4Condition1 5Heat treatment1 6Mechanical
7、 properties1 Appendix A British Standards covering other forms of material of similar composition2 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London So
8、uth Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS TA 46:1973 BSI 02-20001 NOTEOther forms of material of similar composition are covered by British Standards as listed in Appendix A. 1 Inspection and testing procedure This British Standard shall be used in conjun
9、ction with Sections 1 and 2 of BS TA 100. 2 Manufacture The material shall be made from ingots produced, by consumable electrode melting, from materials having a total carbon content of not more than 0.08 %. 3 Chemical composition The chemical composition of the material shall be: 4 Condition Unless
10、 otherwise stated on the drawing, order or Inspection Schedule, the material shall be supplied fully heat treated and either centreless ground or machined. 5 Heat treatment The material and test samples shall be heat treated as follows: 1) heat at a temperature of 900 10 C and hold for 1 h per 25 mm
11、 of section, with a minimum of 20 min; 2) cool in air; 3) heat at a temperature of 500 5 C and hold for 24 h; 4) cool in air. 6 Mechanical properties 6.1 The mechanical properties obtained from test pieces selected, prepared and tested in accordance with the relevant requirements of BS TA 100 shall
12、be: 6.1.1 Tensile test at room temperature 6.1.2 Creep test. When required and stated on the drawing, order or Inspection Schedule: Maximum total plastic strain in 100 h under a load of 465 N/mm2 at 400 C: 0.10 % NOTE1 N/mm2 = 1 MN/m2 = 1 MPa = 0.1 h bar = 0.065 tonf/in2. Information on SI units is
13、given in BS 3763, “The International System of units (SI)”, and BS 350, “Conversion factors and tables”. Element % min.max. Aluminium Molybdenum Tin Silicon Iron Hydrogen Oxygen Nitrogen Oxygen + 2 nitrogen Titanium 3.0 3.0 1.5 0.3 5.0 5.0 2.5 0.7 0.20 0.0125 0.25 0.03 0.27 Remainder 0.2 % proof str
14、essTensile strengthElongationReduction of area min.min.max.min.min. N/mm2N/mm2N/mm2% 9201 0501 220920 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS TA 46:1973 2 BSI 02-2000 Appendix A British Standards cov
15、ering other forms of material of similar composition Tensile strength (N/mm2) min.1 1001 0501 0501 000 max.1 2801 2201 2001 200 Limiting ruling section (mm) Over100 Up to and including 25100100150 FormBritish Standard Bar and section for machining Forging stock Forgings BS TA 45 BS TA 47 BS TA 48 BS
16、 TA 49 BS TA 50 BS TA 51 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:02:09 GMT+00:00 2006, Uncontrolled Copy, (
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