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1、 Reference number ISO 5950:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 5950 Fourth edition 2008-04-15 Continuous electrolytic tin-coated cold-reduced carbon steel sheet of commercial and drawing qualities Tles en acier au carbone lamines froid, revtues en continu dun dpt lectrolytique dtain, de qual
2、its commerciale et pour emboutissage Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E) PDF discla
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6、TED DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs mem
7、ber body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reserved Copyright International Organization for Standardization Prov
8、ided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worl
9、dwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on
10、that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted i
11、n accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard
12、 requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 5950 was prepared by Tec
13、hnical Committee ISO/TC 17, Steel, Subcommittee SC 12, Continuous mill flat rolled products. This fourth edition cancels and replaces the third edition (ISO 5950:2000), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO
14、 Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:
15、54 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 5950:2008(E) ISO 2008 All rights reserved 1 Continuous electrolytic tin-coated cold-reduced carbon steel sheet of commercial and drawing qualities 1 Scope 1.1 This International Standard applies t
16、o cold-reduced carbon steel sheet of commercial and drawing qualities coated in coil form by electro-deposition of tin. The product is commonly known as electrolytic tin- coated sheet and is used where solderability is desired, appearance is important, or a degree of corrosion resistance under speci
17、fic conditions is advantageous and coating mass can be specified. The coating is expressed as the total coating on both surfaces, in grams per square metre. The coating mass specified should be compatible with the desired service life, thickness of the base metal and the forming requirements involve
18、d. A designation system (Clause 4) includes the coating designation, coating condition and quality. 1.2 Electrolytic tin-coated sheet is normally produced in thicknesses from 0,50 mm to 0,85 mm and widths of 600 mm to 1 050 mm, in coils and cut lengths. NOTE Some world markets define “electrolytic t
19、inplate” as having a maximum thickness of 0,38 mm, in which case, the thickness range for “electrolytic tin-coated sheet” will have a minimum of 0,38 mm. 1.3 Commercial-quality electrolytic tin-coated sheet (quality 01) is intended for general fabricating purposes where sheet is used in the flat sta
20、te, or for bending or moderate forming. 1.4 Drawing quality electrolytic tin-coated sheet (qualities 02, 03, 04) is intended for drawing or severe forming. It is furnished according to the requirements of this International Standard or, with agreement where ordered, to fabricate an identified part,
21、in which case, the mechanical properties in Table 5 do not apply. Drawing qualities are identified as follows: 02 Drawing quality 03 Deep drawing quality 04 Deep drawing quality aluminum killed (non-ageing) 1.4.1 Interstitial free steel (IF Steel) can be applied in orders of 02, 03 and 04, provided
22、that the customer is informed of the substitution and that related shipping documents reflect the actual material shipped. 1.5 This International Standard does not cover tinplate and blackplate. 2 Normative references The following referenced documents are indispensable for the application of this d
23、ocument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature ISO 16162, Continuously cold-rolled steel
24、 sheet products Dimensional and shape tolerances Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E
25、) 2 ISO 2008 All rights reserved 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 electrolytic tin-coated sheet product obtained by electrolytic deposition of tin on cold-reduced steel sheet on a continuous electrolytic tinning l
26、ine to produce either tin-coated coils or tin-coated cut lengths 3.2 skin pass light cold-rolling of the cold-reduced and annealed sheet prior to electro-tinning NOTE The purposes of skin passing are one or more of the following: a) to minimize the appearance of coilbreaks, stretcher strains and flu
27、ting; b) to control the shape; c) to obtain the required surface finish. An increase in hardness and some loss in ductility will result from skin passing. 3.3 aluminum killed steel which has been deoxidized with aluminum sufficient to prevent the evolution of gas during solidification 4 Designation
28、system The as-produced electrolytic tin-coated sheet coatings are designated as SN as shown in Table 4. The coating mass designation follows the SN and three spaces are allocated for coating mass designation. If only two spaces are required, such as for designation 56, then the 56 is preceded by a “
29、0” to fill computer space and is shown as “056”. Since this product is always skin-passed, the section in this designation system usually reserved for S or N will be used to indicate where the tin has been reflowed, or whether it is “matt” or not reflowed (see 5.7 and 5.10). Therefore, the designati
30、ons for this tin condition will be BR: Bright reflowed, fused, melted, MA: Matt, dull, not reflowed, unmelted. The numbers 01, 02, 03 and 04 are common to other standards indicating the qualities of commercial drawing, deep drawing, and deep drawing aluminum killed. EXAMPLE SN056BR03 is a complete d
31、esignation, including coating, coating mass, coating condition and quality signifying: SN: Tin coating, 056: Coating designation (Table 4), BR: Bright; tin has been reflowed, 03: Deep drawing quality. Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
32、ensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E) ISO 2008 All rights reserved 3 5 Conditions of manufacture 5.1 Steelmaking The processes used in making the steel and in electrolytic tin-coated s
33、heet are left to the discretion of the producer. When requested, the purchaser shall be informed of the steelmaking process used. 5.2 Chemical composition The chemical composition (heat analysis) shall not exceed the values given in Tables 1 and 2. Table 1 Chemical composition (heat analysis) Mass f
34、ractions in percent Quality C Mn P S Designation Name max. max.a max.a max. 01 Commercial 0,15 0,60 0,03 0,035 02 Drawing b 0,10 0,50 0,03 0,035 03 Deep drawing b 0,08 0,45 0,02 0,03 04 Deep drawing aluminum killed b (non-ageing) 0,06 0,45 0,02 0,03 a Higher maximum required for certain applications
35、 subject to agreement. b If interstitial free (IF Steel) is to be applied to 02, 03 and 04 orders, the values of 0,15 % maximum Ti and 0,10 % maximum Nb and V are acceptable to ensure that the carbon and nitrogen are fully stabilized. Table 2 Limits on additional chemical elements Elements a Heat an
36、alysis max. % Product analysis max. % Cu b Ni b 0,20 0,20 0,23 0,23 Cr b, c 0,15 0,19 Mo b, c 0,06 0,07 Nb d V d Ti d 0,008 0,008 0,008 0,018 0,018 0,018 a Each of the elements listed in this table shall be included in the report of the heat analysis. When the amount of copper, nickel, chromium or m
37、olybdenum present is less than 0,02 %, the analysis may be reported as “ 0,02 %”. b The sum of copper, nickel, chromium and molybdenum shall not exceed 0,50 % on heat analysis. When one or more of these elements is specified, the sum does not apply; in which case, only the individual limits on the r
38、emaining elements will apply. c The sum of chromium and molybdenum shall not exceed 0,16 % on heat analysis. When one or more of these elements is specified, the sum does not apply; in which case, only the individual limits on the remaining elements will apply. d For stabilized steels, the maximum f
39、or titanium is 0,15 %, and the maximum for each of niobium and vanadium is 0,10 %, to ensure that the carbon and nitrogen are fully stabilized. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:
40、04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E) 4 ISO 2008 All rights reserved 5.3 Chemical analysis 5.3.1 Heat analysis A heat analysis of each heat of steel shall be made by the manufacturer to determine compliance with the requirements of Tables 1
41、and 2. When requested at the time of ordering, this analysis shall be reported to the purchaser or his representative. Each of the elements listed in Table 2 shall be included in the report of the heat analysis. When the amount of copper, nickel, chromium or molybdenum present is less that 0,02 %, t
42、he analysis may be reported at “ 0.02 %”. 5.3.2 Product analysis A product analysis may be made by the purchaser to verify the specified analysis of the semi-finished or finished steel and shall take into consideration any normal heterogeneity. Non-killed steels (such as rimmed or capped) are not te
43、chnologically suitable for verification analysis. For killed steels, the sampling method and deviation limits shall be agreed between the manufacturer and purchaser at the time of ordering. The product analysis tolerances shall be in accordance with Table 3. Table 3 Product analysis tolerances Eleme
44、nt Maximum of specified element % Tolerance over maximum specified % Carbon u 0,15 0,03 Manganese u 0,60 0,03 Phosphorus u 0,04 0,01 Sulfur u 0,04 0,01 NOTE The maximum tolerance in this table is the allowable excess over the specified requirement and not the heat analysis. 5.4 Coating mass The coat
45、ing mass shall conform to the requirements presented in Table 4 for the specific coating designation. The coating mass is the total amount of the tin, including both sides of the sheet, expressed in grams per square metre (g/m2) of sheet. Methods for checking that the material complies with this Int
46、ernational Standard are given in 7.2 and 8.2. Table 4 Mass of coating (total both sides) Minimum coating mass limits Coating designation Nominal coating Triple spot test check limits Single spot test check limits g/m2 g/m2 (of sheet) g/m2 (of sheet) SN056 SN112 SN168 SN224 5,6 11,2 16,8 22,4 3,7 7,3
47、 11,0 14,6 2,8 5,6 8,2 11,0 Because of the many variables and changing conditions that are characteristic of continuous tin coating, the mass of coating is not always evenly divided between the two surfaces of a tin-coated sheet, neither is the tin coating evenly distributed from edge to edge. Howev
48、er, it can normally be expected that not less than 40 % of the single-spot check limit will be found on either surface. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:04:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5950:2008(E) ISO 2008 All rights reserved 5 5.5 Weldability The product is suitable for welding if appr