1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 6582:2000 ICS 77.140.5
2、0 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Continuously hot-dip lead alloy (terne) coated cold reduced carbon steel flat rolled productsThis British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority
3、 of the Standards Committee and comes into effect on 15 June 2000 BSI 06-2000 First edition June 1985 Second edition June 2000 The following BSI references relate to the work on this standard: Committee reference ISE/10 Draft for comment 99/713312 DC ISBN 0 580 33161 X BS 6582:2000 Amendments issued
4、 since publication Amd. No. Date Comments Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee ISE/10, Flat rolled steel products, to Subcommittee ISE/10/8, Coated steel flat rolled products, upon which the following bodies we
5、re represented: British Metalforming Trades Association British Welding Steel Tube Association Cold Rolled Sections Association Institute of Spring Technology Metal Roof Deck Association National Association of Steel Stockholders National Centre of Tribology Society of Motor Manufacturers and Trader
6、s Steel Construction Institute UK Steel Association Zinc Development AssociationBS 6582:2000 BSI 06-2000 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Designation 1 5 Information to be supplied by the purchaser 1
7、6 General requirements 2 7 Specific requirements 2 Annex A (normative) Methods for determination of coating mass 6 Annex B (informative) Proposed text for contractual clauses 6 Table 1 Characteristics 3 Table 2 Coating mass 4ii BSI 06-2000 BS 6582:2000 Foreword This British Standard has been prepare
8、d under the direction of the Engineers Sector Policy and Strategy Committee of the British Standards Institution. It supersedes BS 6582:1985 which is withdrawn. Annex A is normative. The clauses of a contractual nature have been drawn together for information only into annex B. WARNING The Control o
9、f Lead at Work Regulations 1980 apply to the products covered by this British Standard, requiring that precautions be taken during the welding and sometimes brazing in order to avoid the occurrence or effects of hazardous lead fumes. It is also required that precautions be taken during cutting and a
10、brasive operations to avoid exposure to lead dust. The gloves which should always be worn when handling steel sheet, to prevent cuts, will give additional protection when handling lead alloy coated sheet by reducing contamination of the hands with lead which could otherwise be inhaled or ingested wh
11、en smoking or eating. 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. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages Th
12、is document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 06-2000 1 BS 6582:2000 1) Commercial grade terne. This product has no specified coating mass
13、 but meets the other requirements in this standard. 1 Scope This British Standard specifies requirements for continuously hot-dip lead alloy (terne) coated cold reduced low carbon steel flat products in drawing and forming grades. This standard applies to flat products from over 0.4 mm up to and inc
14、luding 2.0 mm thick and widths up to 1 350 mm, in strip and sheet. It applies to products with terne coatings having a nominal mass of 120 g/m 2 and to commercial grade terne coating (CGT) having no specified coating mass but meeting the other requirements of this standard. NOTE The products in this
15、 standard can be used for applications where suitability for soldering and cold forming are required and corrosion resistance is a principal factor. The coating mass specified and the thickness of the base material should be compatible with the desired service life and forming requirements. 2 Normat
16、ive references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of th
17、e publication referred to applies. BS EN 10002-1:1990, Tensile testing of metallic materials Part 1: Method of test at ambient temperature. BS EN 10020:2000, Definition and classification of grades of steel. BS EN 10021:1993, General technical delivery requirement for steel and iron products. BS EN
18、10079:1993, Definition of steel grades. BS EN 10130:1991, Specification for cold rolled low carbon steel flat products for cold forming: technical delivery conditions. BS EN 10131:1991, Cold-rolled uncoated low carbon and high yield strength steel flat products for cold forming Tolerances on dimensi
19、ons and shape. BS EN 10204:1991, Metallic products Types of inspection documents. Euronorm 12:1955, Folding test of sheet steels and strips with a thickness of not less than 3 mm. ISO 10113:1991, Metallic materials Sheet and strip Determination of plastic strain ratio. ISO 10275:1993, Metallic mater
20、ials Sheet and strip Determination of the tensile strain hardening exponent. 3 Terms and definitions For the purposes of this British Standard, the terms and definitions given in BS EN 10020, BS EN 10021, BS EN 10079 and BS EN 10204 and the following apply. 3.1 product thickness thickness of the bas
21、e material without the coating 3.2 hot-dip lead alloy (terne) coating metallic coating applied by immersing suitably prepared products in a molten lead/tin alloy (generally 8 % to 15 % tin) bath NOTE A flash nickel coating is applied electrolytically prior to hot dipping to enhance corrosion resista
22、nce. 4 Designation The designation shall consist of the following items in the order given: a) the number of this British Standard, i.e. BS 6582; b) the word(s) “wide strip”, “sheet” or “slit wide strip”; c) the letter “T” indicating the type of coating; d) a code denoting the grade of the steel bas
23、e, i.e.: 1) DX56D (extra deep drawing alloy quality); 2) DX54D (extra deep drawing quality aluminium killed); 3) DX53D (deep drawing quality); 4) DX52D (drawing quality); 5) DX51D (forming quality); NOTE 1 Products of a non-fluting (not-flatting) grade are available subject to agreement between the
24、purchaser and the manufacturer. e) the letters CGT 1) or the number 120 denoting the coating mass (120 denotes 120 g/m 2 , total including both surfaces); f) letters denoting the surface treatment; g) “Suitable for making the part”, if applicable (see 6.1). NOTE 2 Examples of designation are as foll
25、ows: 1) BS 6582 wide strip DX53D+T.120U. 2) BS 6582 sheet DX53D+T.120U. Suitable for making the part. 5 Information to be supplied by the purchaser 5.1 General The following information shall be given in the enquiry and order to assist the manufacturer in supplying the correct grade of material: a)
26、the complete designation as specified in clause 4; b) the dimensions required (the product thickness is the thickness of the base material without the coating); c) the quality required and handling requirements.2 BSI 06-2000 BS 6582:2000 2) Where the purchaser specifies a particular grade of materia
27、l, without invoking this clause, he assumes responsibility that the grade will be satisfactory. 5.2 Options In the event that the purchaser does not indicate his wish to implement any of the general requirements included in clause 6 and specify his requirements at the time of the enquiry and order,
28、the manufacturer shall supply the product on the following basis: a) that a corrosion resistance test is not required (see 6.3); b) that the product will be supplied as coated (see 6.2); c) that the product will be supplied branded (see 6.4); d) that no acceptance testing is required (see 6.5). NOTE
29、 1 A drawing of the part is desirable. NOTE 2 Lead alloy coated flat products conforming to this standard are suitable for welding, brazing and soldering using appropriate methods and conditions. 6 General requirements 6.1 Suitability for making the part NOTE 1 Formability requirements vary widely a
30、nd it is advisable to seek advice from the supplier when considering purchasing material as suitable for a particular application and/or purpose see clause 4f) 2) The coated flat rolled products shall be supplied either: a) with a specified grade of steel base see clause 4d); or b) suitable for maki
31、ng the part see 5.1a). NOTE 2 Reference should be made to annex B for a contractual clause regarding allowable processing scrap. When, following an enquiry, the supplier undertakes to supply steel which is suitable for forming into a particular part, the purchaser, when ordering the steel, shall add
32、 the words “Suitable for making the part” after the coating designation. In such cases, the steel supplied shall still be deemed to conform to this standard if there are minor variations from the chemical composition and/or tensile properties specified for that steel. 6.2 Surface protection Terne co
33、ated flat rolled products shall be supplied with one of the following surface treatments: a) U As coated; NOTE 1 The manufacturing process gives a roughened surface to the coating and will leave oil residues on the surface. b) O With additional lubrication; c) B Brushed; NOTE 2 Brushing removes tin/
34、lead oxides produced during the manufacturing process and enhances subsequent passivation or painting operations. d) BC Brushed and chemically treated. 6.3 Corrosion resistance NOTE 1 Although corrosion resistance is an important characteristic of products conforming to this standard, no requirement
35、s are specified. Coated flat rolled products shall be supplied either: a) with no specified requirements for corrosion resistance testing; or b) with specified requirements for corrosion resistance testing. NOTE 2 Where requirements are specified for corrosion resistance, details of sampling and spe
36、cimen preparation, the test method and interpretation of the results should be stated in that order. 6.4 Branding The products shall be supplied either: a) branded with the manufacturers identity number only and labelled in accordance with 7.8;or b) labelled according to 7.8 only. 6.5 Acceptance tes
37、ting Coated flat rolled products shall be supplied either: a) with no acceptance testing; or b) with specified acceptance testing in accordance with 7.5 and 7.6. 7 Specific requirements 7.1 Manufacturing processes Coating line welds shall not be included. NOTE The processes used in steel making and
38、in the manufacture of the product are at the discretion of the manufacturer. 7.2 Properties of the steel base The initial product for terne coating shall be rolled steel strip conforming to BS EN 10130. When sampled and tested in accordance with 7.4.2.1 and 7.5.2, the tensile properties of the steel
39、 base shall be in accordance with Table 1, unless the product is ordered “Suitable for making the part” (see 6.1). NOTE 1 It should be noted that the mechanical properties of the steel base may be altered by the coating process. Due to the problems of ageing, the tensile properties shall be valid fo
40、r 8 days for the products of grade DX51D and for 6 months for the products of grades DX52D, DX53D, DX54D, DX56D commencing from the date on which they are made available by the works. NOTE 2 The date of availability should be notified to the purchaser with reasonable prior notice. NOTE 3 The prolong
41、ed storage of products grade DX51D+T may result in some change of mechanical properties, leading to a reduction in formability. BSI 06-2000 3 BS 6582:2000 Table 1 Characteristics a Grade Definition and classification according to EN 10020 Deoxidization Validity of mechanical properties Absence of st
42、retcher strain marks R e R e A 80 r 90 n 90 Chemical composition (ladle analysis % max.) N/mm 2b N/mm 2 % mimimum c minimum d,c. minimum d CPSM nT i DX51D+T f Non alloy quality steel g Manufacturers discretion 3 months 2/280 h, j 270/410 28 0,12 0,045 0,045 0,60 DX52D+T Non alloy quality steel g Ful
43、ly killed 6 months 6 months 2/240 h 270/370 34 1,3 0,10 0,035 0,035 0,45 DX53D+T Non alloy quality steel g Fully killed 6 months 6 months 2/210 h 270/350 38 1,6 0,180 0,08 0,030 0,030 0,40 DX54D+T Non alloy quality steel g Fully killed 6 months 6 months 2/180 h 270/330 40 1,9 0,200 0,06 0,025 0,025
44、0,35 r min. d, e n min. d DX56D+T Alloy quality steel Fully killed 6 months no limit 2/180 i 270/350 38 1,8 0,220 0,02 0,020 0,020 0,25 k 0,3 a The mechanical properties apply only to the steel base before coating. b The values of the yield stress are the 0,2 % proof stress for products which do not
45、 present a definite yield point and the lower yield stress R eL for the others. When the thickness is less than or equal to 0,7 mm and greater than 0,5 mm the value for yield stress shall be increased by 20 N/mm 2 . For thicknesses less than or equal to 0,5 mm the value shall be increased by 40 N/mm
46、 2 . c When the thickness is less than or equal to 0,7 mm and greater than 0,5 mm the minimum value for elongation shall be reduced by 2 units. For thickness less than or equal to 0,5 mm, the minimum value shall be reduced by 4 units. d The values for r 90 and n 90 or r and n only apply to products
47、of thickness equal to or greater than 0,5 mm. e When the thickness is over 2 mm the value of r 90 or r shall be reduced by 0,2. f It is recommended that products in grade DX51D+T should be formed within 6 weeks from the time of their availability. g Unless otherwise agreed at the time of the enquiry
48、 and order, DX51D+T, DX52D+T, DX53D+T and DX54D+T may be supplied as alloy steels (for example boron or titanium). h For design purposes the lower limit of R e for grade DX51D+T, DX52D+T, DX53D+T and DX54D+T may be assumed to be 140 N/mm 2 . i For design purposes the lower limit of R e for grade DX5
49、6D+T may be assumed to be 120 N/mm 2 . j The upper limit of R e of 280 N/mm 2 for grade DX51D+T shall be valid only for 8 days from the time of availability of the product. k Titanium may be replaced by niobium. Carbon and nitrogen shall be completely bound.4 BSI 06-2000 BS 6582:2000 7.3 Properties of the coating 7.3.1 Chemical composition of the coating The lead alloy coating composition by mass shall be: tin 8 % to 15 %; antimony 3 % maximum; lead remainder. The lead alloy coating composition shall be verified from the manufac
