BS 302-2 Stranded Steel Wire Ropes

8/15/2019 BS 302-2 Stranded Steel Wire Ropes

1/15LicensedCopy:lbocvzrlbocvzr,UniversityofLoughborough,23March2004,UncontrolledCopy,(c

)BSI

British Standard

A single copy of this British Standard is licensed to

lbocvzr lbocvzr

23 March 2004

This is an uncontrolled copy. Ensure use of the mostcurrent version of this document by searching British

Standards Online at bsonline.techindex.co.uk


2/15

BRITISH STANDARD BS 302-2:1987Reprinted,incorporating Amendment No. 1

Stranded steel wireropes —

Part 2: Specification for ropes forgeneral purposes

UDC 677.721

LicensedCopy:lbocvzrlbocvzr,UniversityofLoughborough,23March

2004,UncontrolledCopy,(c

)BSI


3/15


4/15

BS 302-2:1987

© BSI 01-1999 i

Contents

Page

Committees responsible Inside front cover

Foreword ii1 Scope 1

2 Definitions 1

3 Compliance 1

4 Wire rope constructions and sizes 1

5 Material 1

6 Lay 2

7 Lubrication 2

8 Minimum breaking load 2

Figure 1 — 6 × 19 and 6 × 36 construction groups 3

Table 1 — Wire rope constructions and sizes 1

Table 2 — 6 × 7 construction group 2Table 3 — 6 × 19 and 6 × 36 construction groups 4

Table 4 — 12 × 6 over 3 × 24 construction group 5

Table 5 — 17 × 7 and 18 × 7 construction groups with fibreor steel core 6

Table 6 — 34 × 7 construction group with fibre or steel core 7

Publications referred to Inside back cover



)BSI


5/15

BS 302-2:1987

ii © BSI 01-1999

Foreword

This Part of BS 302 has been prepared under the direction of the MechanicalHandling Standards Committee. It is one Part of a combined revision ofBS 302:1968, BS 236:1968, BS 329:1968, BS 330:1968, BS 365:1968 andBS 3530:1968, which are withdrawn. BS 302 is now published in six Parts andtakes account of both national and international developments since 1968.

This Part (Part 2) specifies requirements for general purpose steel wire ropesadditional to the general requirements in Part 1. Subsequent Parts specify theadditional requirements for other particular uses of ropes:

— Part 3: Specification for zinc coated ropes for ships;

— Part 4: Specification for ropes for lifts;

— Part 5: Specification for ropes for hauling purposes;

— Part 6: Specification for ropes for mine hoisting .

Two further Parts are in preparation, covering larger diameter ropes (64 mmto 205 mm diameter) and higher strength ropes and will be Parts 7 and 8

respectively.In line with the principles of international standard ISO 2408, published by theInternational Organization for Standardization (ISO), the constructions aregrouped according to the number of outer wires in the strands. The generalrequirements of BS 302-1 and the methods used for calculating breaking loadsand approximate masses are in accordance with ISO 2408. In respect ofindividual usages the ropes in Parts 2 and 3 are fully in accordance with ISO 2408and those in section 2 of Part 4 are in accordance with ISO 4344. In each of theseParts however, certain additional ropes still in common use in the UK have beenincluded.

In line with current international practice, the term “zinc coated” has beenadopted in this standard in place of “galvanized”. The terms are synonymous.

Purchasers ordering to BS 302 are advised to specify in their purchasing contractthat the manufacturer operate a quality system in compliance with theappropriate Part of BS 5750, or suitable equivalent, to ensure themselves thatproducts claimed to comply with BS 302 consistently achieve the required level ofquality.

Wire rope users will find valuable information in the companion publicationBS 6570 “Code of practice for the selection, care and maintenance of steel wireropes”.

A British Standard does not purport to include all the necessary provisions of acontract. Users of British Standards are responsible for their correct application.

Compliance with a British Standard does not of itself confer immunityfrom legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii,

pages 1 to 8, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have hadamendments incorporated. This will be indicated in the amendment table onthe inside front cover.



)BSI


6/15

BS 302-2:1987

© BSI 01-1999 1

1 Scope

This Part of BS 302 specifies the requirements for

steel wire ropes for general purposes and is for usein conjunction with Part 1.

NOTE 1 Information to be supplied by the purchaser on theenquiry and order is given in appendix F of BS 302-1:1987.

NOTE 2 The titles of the publications referred to in thisstandard are listed on the inside back page.

2 Definitions

For the purposes of this Part of BS 302, thedefinitions given in BS 302-1 apply.

3 Compliance

Ropes in accordance with BS 302-2 shall complywith this Part and with BS 302-1.

4 Wire rope constructions and sizes

Constructions and size ranges shall be as given in

Table 1.

NOTE In the absence of a precise indication by the purchaseron the enquiry and order, the choice of construction within agroup is at the discretion of the supplier.

5 Material

5.1 Wire

5.1.1 General. The wire used for the manufacture ofwire ropes specified in this Part, as shown inTable 1, shall comply with sections 1 and 2 ofBS 2763:1982. The mechanical tests shall beconfined to the tensile strength and torsion

requirements.5.1.2 Wire finish. The wire shall be bright or class Zzinc coated for all constructions. Zinc coating shallcomply with BS 2763.

Table 1 — Wire rope constructions and sizes

Ropegroup

Description Size range(diameter)

Typical construction

mm

6 × 7 Up to seven outer wires in a strand, one layer ofwire over a king wire.

2 to 9 6 × 7 (6/1)

6 × 19 8 to 12 outer wires in a strand, two or threelayers over a king wire. Wires equal laid.

3 to 52 6 × 19 (9/9/1)a

6 × 19 (12/6 + 6F/1)6 × 26 (10/5 and 5/5/1)6 × 31 (12/6 and 6/6/1)

6 × 36 14 to 18 outer wires in strand, 3 or more layersof wire over a king wire. Wires equal laid.

9 to 60 6 × 36 (14/7 and 7/7/1)6 × 41 (16/8 and 8/8/1)6 × 49 (16/8 and 8/8/8/1)

12 × 6over

3 × 24

“Paragon” multi-strand.

12 to 18 centreless flat strands each comprisingfour to six wires cross laid over three ovalstrands usually of the construction (15/9/FIBRE)over a fibre core.

8 to 32 12 × 6 over 3 × 24

17 × 7or

18 × 7

17 or 18 strands in rope. Two layers of strandover fibre or steel core.

6 to 26 17 × 7 (6/1)18 × 7 (6/1)

34 × 7 34 or 36 strands in rope. Three layers of strandover fibre or steel core.

16 to 40 34 × 7 (6/1)36 × 7 (6/1)

a 3 mm to 6 mm ropes in this group are only available as 6 × 19 (12/6/1).



)BSI


7/15

BS 302-2:1987

2 © BSI 01-1999

5.1.3 Tensile grade of wires. For all constructions,all wires except filler wires, king wires and wires

forming a steel main core, whether bright or zinccoated, shall be of 1 770 N/mm2 1) tensile grade.

5.2 Rope main core

5.2.1 General. The main core of the rope shall be offibre or steel.

5.2.2 Fibre core. Fibre cores shall comply with 3.2 ofBS 302-1:1987.

5.2.3 Steel core. Where a steel core is used, it shallbe an independent wire rope (IWRC) for rope sizesof 13 mm diameter and above. For rope sizes smallerthan 13 mm diameter the steel core shall be eitheran IWRC or a wire strand (WSC).

All wires forming a steel main core, except kingwires, shall be of one tensile grade.

6 Lay

6.1 Direction of lay

Ropes shall be of right-hand lay or of left-hand lay.

NOTE For economic reasons right-hand lay is preferred andwill be supplied. It will need to be stated by the purchaser on hisenquiry and order if a left-hand lay rope is required.

6.2 Type of lay

Round strand ropes shall be either ordinary orLang’s lay. Multistrand ropes shall have either anordinary or Lang’s lay outer layer, with theexception of ropes of Paragon construction whichshall have a Lang’s lay outer layer.

7 Lubrication

Fibre main cores shall be treated and the wires ofthe rope shall be coated with a lubricant complyingwith 3.3 of BS 302-1:1987.

NOTE The degree and type of lubrication should be agreedbetween the purchaser and the supplier.

8 Minimum breaking load

The minimum breaking loads shall be as given inTable 2 to Table 6.

NOTE For guidance, these tables also give approximate massesof ropes, calculated as in C.2 of BS 302-1:1987.

Table 2 — 6 × 7 Construction group

1) 1 N/mm2 = 1 MPa.

Nominal

diameter

Minimum breaking force

(1 770 N/mm2

tensile grade)

Minimum breaking load

(1 770 N/mm2

tensile grade)

Approximate mass

Fibre cored Steel cored Fibre cored Steel cored Fibre cored Steel cored

mm

23

45

67

89

kN

2.355.29

9.4014.7

21.228.8

37.647.6

kN

2.545.72

10.215.9

22.931.1

40.751.5

t

0.240.54

0.961.50

2.162.94

3.834.85

t

0.260.58

1.041.62

2.333.17

4.155.25

kg/100 m

1.383.11

5.548.65

12.517.0

22.128.0

kg/100 m

1.523.43

6.109.53

13.718.7

24.430.9



)BSI


8/15

BS 302-2:1987

© BSI 01-1999 3

Figure 1 — 6 × 19 and 6 × 36 construction groups



)BSI


9/15

BS 302-2:1987

4 © BSI 01-1999

Table 3 — 6 × 19 and 6 × 36 construction groups

Nominal

diameter

Minimum breaking force

(1 770 N/mm2 tensile grade)


(1 770 N/mm2 tensile grade)

Approximate mass

Fibre cored Steel cored Fibre cored Steel cored Fibre cored Steel cored

mm

3456

789

10

11121314

16181920

22242628

32353638

40444852

545660

kN

4.898.69

13.619.6

28.637.447.358.4

70.784.198.7

114

150189211234

283336395458

598716757843

9351 1311 3461 579

1 7031 8322 103

kN

5.299.4

14.721.2

30.940.351.0

63.0

76.290.7

106124

161204227252

305363426494

645772817910

1 0081 2201 4521 704

1 8371 9762 268

t

0.500.891.392.00

2.923.814.825.95

7.218.57

10.111.6

15.319.321.523.9

28.834.340.346.7

61.073.077.285.9

95.3115137161

174187214

t

0.540.961.502.16

3.154.115.206.42

7.779.25

10.812.6

16.420.823.125.7

31.137.043.450.4

65.778.783.392.8

103124148174

187201231

kg/100 m

3.115.548.65

12.5

17.723.129.236.1

43.752.061.070.8

92.4117130144

175208244283

370442468521

578699832976

1 0531 1321 300

kg/100 m

3.436.109.53

13.7

19.525.532.239.8

48.257.367.378.0

102129144159

193229269312

408488516575

637771917

1 076

1 1611 2481 433

NOTE 1 3 mm to 8 mm rope is not available in the 6 × 36 construction group.NOTE 2 56 mm and 60 mm ropes are only available in the 6 × 36 construction group.

NOTE 3 The values for 3, 4, 5 and 6 mm ropes are based on 6 × 19 cross-lay construction.



)BSI


10/15

BS 302-2:1987

© BSI 01-1999 5

Table 4 — 12 × 6 over 3 × 24 construction group

Nominal diameter Minimum breaking force

(1 770 N/mm2

tensile grade)


(1 770 N/mm2

tensile grade)

Approximate mass

(fibre cored)

mm

89

1011

12131416

18192022

24262832

kN

34.043.053.164.3

76.589.7

104136

172192212257

306359416544

t

3.474.385.416.55

7.809.14

10.613.9

17.519.621.626.2

31.236.642.455.5

kg/100 m

23.229.336.243.8

52.161.271.092.7

117131145175

209245284371



)BSI


11/15

BS 302-2:1987

6 © BSI 01-1999

Table 5 — 17 × 7 and 18 × 7 construction groups with fibre or steel core


(1 770 N/mm2

tensile grade)


(1 770 N/mm2

tensile grade)

Approximate mass

(fibre cored)

mm

6789

10111213

14161819

20222426

kN

20.928.437.247.0

58.170.283.698.1

114149188210

232281334392

t

2.132.903.794.79

5.927.168.52

10.0

11.615.219.221.4

23.628.634.040.0

kg/100 m

14.019.125.031.6

39.047.256.265.9

76.499.8

126141

156189225264



)BSI


12/15

BS 302-2:1987

© BSI 01-1999 7

Table 6 — 34 × 7 construction group with fibre or steel core


(1 770 N/mm2

tensile grade)


(1 770 N/mm2

tensile grade)

Approximate mass

mm

16181920

22242628

3235

3638

40

kN

144182203225

272324380441

576690

729813

901

t

14.718.620.722.9

27.733.038.745.0

58.770.3

74.382.9

91.8

kg/100 m

99.8126141156

189225264306

399478

505563

624



)BSI


13/15

8 blankLicensedCopy:lbocvzrlbocvzr,UniversityofLoughborough,23March


)BSI


14/15

BS 302-2:1987

© BSI 01-1999

Publications referred to

BS 2763, Specification for round carbon steel wire for wire ropes.

BS 5750, Quality systems2).

BS 5750-2, Specification for manufacture and installation.BS 6570, Code of practice for the selection, care and maintenance of steel wire ropes2).

ISO 2408, Steel wire ropes for general purposes — Characteristics2).

ISO 4344, Steel wire ropes for lifts2).

2) Referred to in the foreword only.



)BSI


15/15

BSI

389 Chiswick High Road

LondonW4 4AL

|||||||||||||||||||||||||||||||||||||||||||

|||||||||||||||||||||||||

|||||||||||||||||||||||||

||||||||||||||||||||||||||||||||||

BSI Ð British Standards Institution

BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is

incorporated by Royal Charter.

Revisions

British Standards are updated by amendment or revision. Users of British Standardsshould make sure that they possess the latest amendments or editions.

It is the constant aim of BSI to improve the quality of our products and services. Wewould be grateful if anyone finding an inaccuracy or ambiguity while using thisBritish Standard would inform the Secretary of the technical committee responsible,the identity of which can be found on the inside front cover. Tel: 020 8996 9000.Fax: 020 8996 7400.

BSI offers members an individual updating service called PLUS which ensures thatsubscribers automatically receive the latest editions of standards.

Buying standards

Orders for all BSI, international and foreign standards publications should beaddressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001.

In response to orders for international standards, it is BSI policy to supply the BSIimplementation of those that have been published as British Standards, unlessotherwise requested.

Information on standards

BSI provides a wide range of information on national, European and internationalstandards through its Library and its Technical Help to Exporters Service. VariousBSI electronic information services are also available which give details on all its

products and services. Contact the Information Centre. Tel: 020 8996 7111.

Fax: 020 8996 7048.Subscribing members of BSI are kept up to date with standards developments andreceive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002.Fax: 020 8996 7001.

Copyright

Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permittedunder the Copyright, Designs and Patents Act 1988 no extract may be reproduced,stored in a retrieval system or transmitted in any form or by any means ± electronic,

photocopying, recording or otherwise ± without prior written permission from BSI.

This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If thesedetails are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.

If permission is granted, the terms may include royalty payments or a licensingagreement. Details and advice can be obtained from the Copyright Manager.Tel: 020 8996 7070.

ensedCopy:lbocvzrlbocvzr,UniversityofLoughborough,23March


)BSI

Documents

BS 302-2 Stranded Steel Wire Ropes