BS L 155-1977 Specification for ingots and castings of aluminium-copper-silicon alloy (solution treated and artificially aged) (Cu 4 Si 1)《铝-铜(4)-硅(1)合金铸锭和铸件规范(溶液处理和人工时效)》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS L 155:1977 Incorporating Amendment Nos. 1 and 2 Specification for Ingots and castings of aluminium-copper- silicon alloy (Solution treated and artificially aged) (Cu 4, Si 1) UDC 629.7:669.715378214153.71157.84BSL 155:1977 This British Standard, having been prepa

2、red under the directionof the Aerospace Standards Committee, was published under the authority ofthe Executive Board on 31January1977 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/27 Draft for comment76/70247 DC ISBN0580099806 A British Standar

3、d does not purport to include all the necessary provisions 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

4、 inside front cover, pages i and ii, page 1 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 issue Comments 373

5、6 September 1981 6545 March 1991 Indicated by a sideline in the marginBSL 155:1977 BSI 01-2000 i Contents Page 1 Inspection and testing procedure 1 2 Chemical composition 1 3 Heat treatment 1 4 Mechanical properties 1 5 Grain size 1ii blankBSL 155:1977 BSI 01-2000 1 NOTEIngots and castings of this c

6、omposition but solution treated and aged at room temperature are covered by BSL154. 1 Inspection and testing procedure This British Standard shall be used in conjunction with the relevant sections of the latest issue of BSL101 as follows. 2 Chemical composition 2.1 The chemical composition of the in

7、gots and castings shall be: 2.2 The ingots and castings shall be grain refined with titanium or with titanium and boron. The ingot maker shall declare the grain refining element(s) used. 3 Heat treatment 3.1 The castings and test samples shall be heat treated together as follows: a) solution treat a

8、t a temperature of510 5 C for not less than16h; b) quench into water at a temperature of50 C to70 C or in a polymer quenchant at a temperature not greater than30 C; NOTEThe use of polymer quenchant as an alternative to water should be agreed by the purchaser. c) artificially age by heating at a temp

9、erature of140 10 C for not less than16h; d) cool in air. 3.2 Where a polymer quenchant has been used in3.1 b), the nature of the quenchant shall be defined on the certificate of conformity for the castings. 4 Mechanical properties 4.1 Tensile test NOTEThe tensile test values specified for test piece

10、s machined from separately cast test samples may not be realized in certain portions of castings. The mechanical properties obtained from separately cast test samples, selected and prepared in accordance with the relevant requirements of BSL101, shall be not less than the following values. NOTEInfor

11、mation on SI units is given in BS3763 “The International System of units (SI)” and BS350 “Conversion factors and tables”. 4.2 Hardness test. The hardness of castings heat treated with unrelated test samples, in accordance with clause3, shall be not less than the following values: 5 Grain size The gr

12、ain size of the castings shall be as uniform as possible and preferably not greater than0.20mm. Ingots sections 1 and 2 Castings not subject to cut-up testing sections 1 and 3 Castings subject to cut-up testing sections 1 and 4 Element % min. max. Silicon 1.0 1.5 Iron 0.25 Copper 3.8 4.5 Manganese 0

13、.1 Magnesium 0.10 Nickel 0.1 Zinc 0.1 Titanium 0.05 0.25 Lead 0.05 Tin 0.05 Others each 0.05 Others total 0.15 Aluminium Remainder Test sample 0.2 % proof stress Tensile strength Elongation MPa (= N/mm 2 ) MPa (= N/mm 2 ) % Sand cast 200 280 4 Chill cast 200 310 9 Sand cast 85 HB Chill cast 85 HBBS

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