BRITISH STANDARD BS B 24 1991 Specification for Copper tin phosphorous alloy rods and sections L ic e n s e d C o p y L o n d o n S o u th B a n k U n iv e rs it y , L o n d o n S o u th B a n k U n i[.]
Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD Specification for Copper-tin-phosphorous alloy rods and sections BS B 24:1 991 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B 24:1991 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Policy Committee (ACE/- ) to Technical Committee ACE/1 6, upon which the following bodies were represented: British Non- ferrous Metals Federation Copper Development Association Ministry of Defence Society of British Aerospace Companies Ltd This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 31 October 991 © BSI 01 - 2000 The following BSI references relate to the work on this standard: Committee reference ACE/1 Draft for comment 90/73965 DC ISBN 580 19994 Amendments issued since publication Amd No Date Comments Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B 24:1991 Contents Page Committees responsib le Inside front cover Foreword Scope References Technical requirements Tab le — Technical requirements for phosphor bronze rods and sections © BSI 01 - 000 ii i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B : 991 Fore word This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is a conversion and revision of MoD (PE) Specification DTD 265A, which it supersedes A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application C omp liance with a British S tand ard d oe s no t of itse lf confe r immunity from le gal ob ligatio ns S ummary of p age s This document comprises a front cover, an inside front cover, pages i and ii, pages and 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 ii © BSI 01 - 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B : 991 S cop e Te chnical re quireme nts This British Standard specifies the inspection and 3.1 testing procedure, chemical composition, heat the technical requirements specified in Table treatment and mechanical properties for a All material supplied shall comply with the Material to this standard shall comply with copper- tin- phosphorous alloy supplied in the form of requirements appropriate to its dimensions and rods (including hollow rods) and sections condition as specified in the standards given in line of Table Re fe re nce s 3.2 Symbols and units in Table shall be This standard makes reference to the following interpreted in accordance with BS 5555, BS 5775- standards publications: or BS EN 2500- BS B 00, Procedure for inspection, testing and acceptance of wrought copper alloys ) Specification for copper and copper alloy rods and sections (other than forging stock) BS 2874, BS 5555, Specification for SI units and recommendations for the use of their multiples and of certain other units Specification for quantities, units and symbols — Part General principles BS 5775, Instructions for the drafting and use of metallic material standards — Part General requirements ) BS EN 2500, 1) In preparation © BSI 01 - 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B : 991 Tab le — Te chnical re quire me nts for p hosp hor b ronz e rod s and se ctions Mate rial d e signatio n C he mical co mp o si ti o n % Element max Me tho d o f me lti ng Fo rm Me tho d o f p ro d u ctio n Li mi t d i me nsi o ns (mm) Te chni cal sp e cifi catio n D ime nsio nal stand ard 6 D e live ry co nd i ti o n and Pb Fe Ni Zn 7.5 0.1 — — 9.0 0.4 0.05 0.1 — Rods, and sections Rolled, extruded or drawn k (a or D) k 80 Sections and of BS B 100 BS 2874(2) As manufactured — 0.3 — 0.30 Total impurities — 0.3(1) Cu Base — — Delivery condition he at tre atme nt D e li ve ry co nd i ti o n co d e CuSn8 Sn P Use co nd itio n and — he at tre atme nt C haracte risti cs Delivery condition S amp li ng Te st p i e ce H e at tre atme nt 10 D ime nsi o ns co nce rne d Thickne ss o f clad d ing on e ach mm % k (a or D) k 18 — L °C MPa MPa % % L Ambient temperature U 400 U 550 U 15 — 18 < (a or D) k 40 40 < (a or D) k 80 face 11 D ire cti o n o f samp le 12 Te mp e rature 13 Pro o f stre ss 14 Tensi le 15 S tre ngth E lo ngati o n 16 Re d u ctio n o f Ú Rp0.2 Rm A Z L U 360 U 500 U 18 U 300 U 450 U 20 are a 17 H ard ne ss 18 S he ar stre ngth 19 B e nd ing 20 Imp act stre ngth 21 Te mp e ratu re 22 Ti me 23 S tre ss 24 C re e p 25 E lo ngati o n Ru p ture ÖR HV U 127 (HB U 120) MPa — — — °C — h — MPa — % — MPa — A % RC k Ú Öa a stre ss 26 E lo ngati o n at — rup ture 98 No te s (1) Total impurities include Pb, Fe, Ni and Sn (2) Material group III tolerances shall apply For round rod, normal tolerances shall apply unless close tolerances are specified on the order NOTE The dimensional tolerances for rods larger than the size ranges given in BS 2874 should be agreed between the supplier and the purchaser © BSI 01-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI blank Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 03: 04: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS B 24:1991 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the identity of which can b e found on the inside front cover Tel: 02 89 96 90 00 Fax: 02 89 96 40 BS I offers 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