1、BRITISH STANDARD MARINE SERIES BS MA 29: 1982 Specification for Steel wire rope and strand for yachts UDC 629.125.12.014.23:677.721BSMA29:1982 This BritishStandard, having been prepared under the directionof the Shipbuilding andMarine Standards Committee, was published underthe authority of the Boar
2、d ofBSI and comes into effect on 29October1982 BSI02-2000 First published as BS3972 January1966 First revision as BSMA29 November1973 Second revision October1982 The following BSI references relate to the work on this standard: Committee reference SME/8 Draft for comment 81/72370 DC ISBN 0 580 12858
3、 X Foreword This BritishStandard was first published as BS MA29 in1973, when it superseded BS3972. This revision, having been prepared under the direction of the Shipbuilding and Marine Standards Committee, covers a range of steel wire rope and strand suitable for the majority of normal requirements
4、 for yachts. Unlike the1973 edition, natural and man-made fibre ropes have been omitted from this standard. Reference should be made to BS2052 for requirements for natural fibre ropes, and to BS4928 for requirements for man-made fibre ropes. For types of construction of steel wire rope, seeBS365. Wh
5、ile it is not intended to restrict the choice of rope, the term “BritishStandard yacht rope” applies only to rope described inTable 3, Table 4 andTable 5 of this standard. In line with current international practice, the term “zinc coated” has been adopted in this standard in place of “galvanized”.
6、The terms are synonymous. 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 page
7、s This document comprises a front cover, an inside front cover, pagesi andii, pages1 to5 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 pu
8、blication Amd. No. Date of issue CommentsBSMA29:1982 BSI 02-2000 i Contents Page Foreword Inside front cover 1 Scope 1 2 References 1 3 Definitions 1 4 Material 1 5 Manufacture 1 6 Inspection, testing and acceptance 3 7 Certificate of test, marking and packaging 3 Figure 1 Method of measuring wire r
9、ope diameter 2 Table 1 Minimum tensile strength and nominaldiameterrangeofstainlesssteel wire 1 Table 2 Permitted limits on diameter 2 Table 3 Zinc coated steel wire rope 4 Table 4 Stainless steel wire rope 4 Table 5 Stainless steel wire strand 5ii blankBSMA29:1982 BSI 02-2000 1 1 Scope This British
10、Standard specifies requirements for the material, manufacture and testing of the following types, constructions and diameters of steel wire rope and strand. 2 References This standard makes reference to the following publications. BS365, Galvanized steel wire ropes for ships. BS970, Wrought steels i
11、n the form of blooms, billets, bars and forgings Part4 Stainless, heat resisting and valve steels. BS2052, Specification for ropes made from manila, sisal, hemp, cotton and coir 1) . BS2763, Specification for round carbon steel wire for wire ropes. BS4928, Man-made fibre ropes 1) . 3 Definitions For
12、 the purposes of this BritishStandard, the definitions given in Appendix B of BS365:1968 apply. 4 Material 4.1 Zinc coated wire. Zinc coated wire used for the manufacture of rope shall comply with the requirements for class A zinc coated wire specified in BS2763:1982. The tensile strength grade of z
13、inc coated wire shall be1 770N/mm 2 , except that king wires of strands shall be of any tensile strength grade listed in BS2763:1982 between1 370N/mm 2 and1 770N/mm 2 . 4.2 Stainless steel wire. Stainless steel wire used for the manufacture of rope or strand shall comply in respect of chemical compo
14、sition with the requirements for grade316S16 specified in BS970-4:1970. It shall be free from harmful defects and shall comply with the requirements of BS2763 in respect of the selection of test pieces and wire diameter. NOTEThe mechanical tests specified in BS2763 are not applicable to stainless st
15、eel wire. The minimum tensile strength of stainless steel wire (except for core and king wires) shall be as given inTable 1. Table 1 Minimum tensile strength and nominal diameter range of stainless steel wire 4.3 Main core of rope. The main core of either zinc coated or stainless steel rope shall be
16、 a wire strand of the same construction, material and tensile strength grade as the outer strands. NOTEThe main core of the rope includes a king wire or core. 4.4 Lubricant. Any lubricant used for wire rope shall be selected to reduce friction in the rope, and to provide protection of the steel wire
17、s against corrosion. Any lubricant used shall be free from acid or marked alkali content and shall have no injurious effect on the steel wire. 5 Manufacture 5.1 King wire. King wires of strands shall be of such a size as to provide sufficient support to enable the covering wires to be evenly laid. T
18、ype and construction Nominal diameter range Zinc coated steel wire rope 7 7(6/1) 7 19(12/6/1) Stainless steel wire rope 7 7(6/1) 7 19(12/6/1) Stainless steel wire strand 1 19(12/6/1) mm 2 to14 3 to14 2 to14 3 to14 2 to26 (seeTable 3) (seeTable 4) (seeTable 5) 1) Referred to in the foreword only. Nom
19、inal diameter of wire Minimum tensile strength From Up to but excluding mm 0.20 0.25 0.30 0.40 0.50 0.60 0.70 1.50 2.50 3.00 3.50 mm 0.20 0.25 0.30 0.40 0.50 0.60 0.70 1.50 2.50 3.00 3.50 5.50 N/mm 2 1860 1860 1810 1760 1720 1670 1570 1470 1420 1370 1270 1180 NOTEThe variation in tensile strength of
20、 each of the wires in any one layer shall be not greater than290N/mm 2 .BSMA29:1982 2 BSI 02-2000 5.2 Main core of rope. The main core of the rope shall be of such a size as to provide adequate support to the strands and to enable them to be evenly laid with suitable clearances. 5.3 Directions of la
21、y of rope (seeTable 3 andTable 4). The ropes shall be right-hand ordinarylay. 5.4 Post-forming and pre-forming 5.4.1 Post-forming of1 19 strand. When the twelve outer wires of the end of the strand are carefully unlaid for a distance of one lay length, all the wires being as equally spaced as possib
22、le, the twelve outer wires shall retain their position without any further movement. After unlaying the outer wires, the seven inner wires shall retain their position without unlaying. 5.4.2 Pre-forming of wire rope. When three alternate strands are unlaid for two rope lays, and then laid back, ther
23、e shall be no tendency for the unlaid strands to “run” and they shall assume their original position in the rope when laid back except for a small increase in actual rope diameter at the end, which shall not exceed the nominal diameter by more than7.5%. 5.5 Lubrication. Rope or strand shall be suppl
24、ied free of surface lubricant. 5.6 Joints. When jointed wires are formed into a rope or strand, the joints shall be made so that the rope or strand complies with the requirements of5.7. Wires over0.4mm diameter shall be jointed by welding or brazing. Wires0.4mm diameter and smaller shall be jointed
25、by brazing, welding or tucking. The outer layer of wires in1 19 strand given inTable 5 shall be free from joints. 5.7 Freedom from defects. The completed rope or strand shall be evenly laid and free from loose wires, distorted strands or other irregularities and shall remain in this condition when p
26、roperly unwound from the reel or coil. 5.8 Diameter 5.8.1 Nominal diameter. The size of rope or strand, designated as “nominal diameter” in millimetres, shall be one of those given inTable 3,Table 4 andTable 5. 5.8.2 Actual diameter. The actual diameter shall be measured with a suitable caliper fitt
27、ed with jaws broad enough to cover not less than two adjacent strands (seeFigure 1). The measurements shall be taken at two points spaced at least1 metre apart, and at each point two diameters at right angles shall be measured. The average of these four measurements shall be within the limits given
28、inTable 2 for the appropriate nominal diameter. The maximum variation between any of the four measurements shall not exceed4% of the nominal rope or strand diameter. The actual diameter of rope or strand shall normally be measured on a straight portion without tension, except that in case of dispute
29、 the diameter shall be measured under a force of approximately5% of the minimum breaking load. Table 2 Permitted limits on diameter 5.9 Mass. The mass of rope and strand is not specified in this standard. However, approximate masses of rope or strand are given inTable 3, Table 4 andTable 5 for the a
30、ppropriate nominal diameters. These are calculated values. Figure 1 Method of measuring wire ropediameter Zinc coated and stainless steel wire rope Nominal diameter Limits Plus Minus mm 2 to3 4 to5 6 to7 8 or larger % 7 6 5 4 % 1 1 1 1 1 19 stainless steel wire strand Nominal diameter Limits Plus Mi
31、nus mm 2 to4 5 to7 8 or larger % 4 3 2 % 1 1 1BSMA29:1982 BSI 02-2000 3 5.10 Length. Rope or strand with plain ends or fitted at one end shall be within+2.5%,0 of the nominal length. For rope and strand fitted at both ends, the purchaser shall specify the datum points for length measurements. The to
32、lerance on the nominal length when measured under a minimum force to ensure straightness shall be+1%,0, unless otherwise agreed between the purchaser and the manufacturer. 5.11 Breaking load. When measured in accordance with6.2, the actual breaking load shall be not less than the appropriate minimum
33、 breaking load given inTable 3,Table 4 andTable 5. NOTEThe term “breaking load” has been used in conformity with the traditional usage in the industry and current usage in standards published by the International Organization for Standardization (ISO), although the term “breaking force” is unambiguo
34、us and is to be preferred. The method of test described in6.2 imposes a tensile force, measured in kilonewtons (kN). Some sections of the industry may still refer to breaking loads in units of mass, such as kilograms (kg) or tonnes (t); a mass of1 kg will exert a force of approximately1 daN (decanew
35、ton) or0.01kN in a rope. 6 Inspection, testing and acceptance 6.1 Facilities for inspection. When specified by the purchaser, the manufacturer shall accord the purchaser or his representative all reasonable facilities to satisfy himself that the rope or strand and its components are in accordance wi
36、th this standard. 6.2 Destructive tensile tests 6.2.1 General. The manufacturer shall test to destruction a sample of each ropemaking (production length) selected in accordance with6.2.2 and shall record the actual breaking load of the sample. If, in addition to the manufacturers test, the purchaser
37、 specifies that a sample of the rope or strand be tested to destruction, the test shall be carried out as described in6.2.3. During destructive tests, the test piece shall be gripped in such a way that each of the wires takes a share of the load. 6.2.2 Selection and preparation of test piece. The te
38、st piece shall be representative of the rope as a whole. Prior to selection, the ends of the test piece shall be secured to prevent turn being put into or taken out of the test piece. The rope from which the test piece is taken shall be secured in the same way. When cutting the test piece from the r
39、ope, neither the test piece nor the rope shall be damaged. 6.2.3 Procedure for additional tests. Use a testing machine of suitable capacity and certified accuracy. Select and prepare test lengths (distance between grips) as described in6.2.2 and having the following dimensions. Apply not more than80
40、% of the minimum breaking load quickly. Apply the remaining load slowly at a rate of approximately10N/s. Record the breaking load, reached when no further increase of the load is possible. 6.2.4 Independent test of rope and strand after manufacture. If the purchaser is not satisfied with the tests,
41、the manufacturer shall be at liberty to have the ropes tested in accordance with this standard by an independent testing authority agreed upon between the purchaser and the manufacturer. If the results of such tests are satisfactory, the ropes or strands shall be deemed to comply with the requiremen
42、ts of this standard. 7 Certificate of test, marking and packaging 7.1 Certificate of test and examination. If specified by the purchaser, a certificate of test and examination in the statutory form shall be supplied with each consignment of rope or strand. 7.2 Marking. A tag securely attached to eac
43、h coil or reel shall be marked with the following information: a) the number of this BritishStandard, i.e.BSMA29 2) ; b) the order number of the purchaser; c) any other marking specified by the purchaser. 7.3 Packaging. Unless otherwise specified by the purchaser, rope or strand shall be supplied in
44、 coils or on reels at the discretion of the manufacturer. Rope shall be packaged so as to be protected in transit against damage by moisture, dust and dirt. Nominal diameter of rope Minimum test length 6mm or less 300mm Over6mm, up to and including16mm 600mm 2) Marking BS MA29 on or in relation to a
45、 product is a claim by the manufacturer that the product has been manufactured to the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addres
46、sed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ for certification marks administered by BSI or to the appropriate authority for other certification marks.BSMA29:1982 4 BSI 02-2000 Table 3 Zinc coated steel wire rope Table 4 Stainless steel wire r
47、ope Nominal diameter a Standing rigging Running rigging 7 7(6/1) construction 7 19(12/6/1) construction Approximate mass per100m b Minimum breaking load Approximate mass per100m b Minimum breaking load mm 2 2.5 3 4 5 6 7 8 10 12 14 kg 1.51 2.36 3.40 6.05 9.46 13.6 18.5 24.2 37.8 54.5 74.1 kN 2.74 4.
48、27 6.15 10.9 17.1 24.6 33.4 43.7 68.4 98.1 134.0 kg 3.34 5.94 9.29 13.4 18.2 23.8 37.2 53.5 72.8 kN 5.77 10.2 16.0 23.0 31.4 41.0 64.0 92.2 126.0 a To convert diameter in millimetres to approximate circumference in inches, divide by8. b These are calculated values, and are given for guidance only. N
49、ominal diameter a Standing rigging Running rigging 7 7(6/1) construction 7 19(12/6/1) construction Approximate mass per100m b Minimum breaking load Approximate mass per100m b Minimum breaking load mm 2 2.5 3 4 5 6 7 8 10 12 14 kg 1.51 2.36 3.40 6.05 9.46 13.6 18.5 24.2 37.8 54.5 74.1 kN 2.37 3.71 5.34 9.49 14.8 21.4 29.1 38.0 59.3 85.4 117.0 kg 3.34 5.94 9.29 13.4 18.2 23.8 37.2 53.5 72.8 kN 5.00 8.89 13.9 20.0 27.3 35.6 55.6 80.0 109.0 a To convert diameter in millimetres to approximate circumference in inches, divid
