Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 3109-1 (1982): Specification for Short Link Chain, GradeM (4) - Part I : Non-calibrated Load Chain for LiftingPurposes [MED 14: Mechanical Engineering]

IS : 3109 ( Part I - 1982 ( Reaffirmed 2008 )

Indian Standard SPECIFICATION FOR

SHORT LINK CHAIN, GRADE M (4) PART I NON-CALIBRATED LOAD CHAIN FOR

LIFTING PURPOSES

( Second Revision )

Third Reprint MARCH 1997 (Incorporating Amendment No. 1)

UDC 621.86.065 : 672.63

© Copyright 1982

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002 Gr 3 September 1982

IS : 3109 (Part I) - 1982

Indian Standard SPECIFICATION FOR

SHORT LINK CHAIN. GRADE M (4) PART I NON-CALIBRATED LOAD CHAIN FOR

LIFTING PURPOSE S

( Second Revision ) Lifting Chains and Associated Fittings and Components

Sectional Committee, MCPD 9

Chairman SHRI S. MAJUMDAR

Members DR P. K. CHAKRAVARTY

Representing Directorate General of Technical Development,

New Delhi

Tractel-Tirfor India Pvt Ltd, New Delhi SHRI R. N. BHATNAGAR ( Alternate )

SHRI S . CHANDRA SHRI A. K. CHOPRA ( Alternate )

SHRI N . B . CHAUDHARI

Indian Register of Shipping, Bombay

W. H. Brady & Go Ltd, Bombay SHRI P. VENKATRAMAN ( Alternate )

SHRI B. L. CHITLANGIA Indian Chain Manufacturing Co, Calcutta SHRI PRADIP CHITLANGIA ( Alternate )

DEPUTY DIRECTOR ( MP ), A-1 ASSISTANT DESIGN ENGINEER

( MP ), A-5 ( Alternate ) SHRI A. N. GHOSH SHRI M . MUTHUSWAMY

S H R I S. NAG SHRI A. K. BANGA ( Alternate )

SHRI P. K. NEVATIA SHRI S. V. A P T E ( Alternate )

SHRI ASHOK V. OZA SHRI T . C . P H I L I P ( Alternate )

SHRI S . PAUL SHRI S . C . BHATIA ( Alternate )

Ministry of Railways, Lucknow

National Test Houst, Calcutta Directorate General Factory Advice Service and

Labour Institutes ( Ministry of Labour, Employment and Rehabilitation )

Jessop & CO Ltd, Calcutta

Indian Link Chain Manufacturers Ltd, Bombay

Ashok Steel Ghain Manufacturing Co, Bombay

Tak Machinery Ltd, Bombay

(Continued on page 2)

© Copyright 1992 BUREAU OF INDIAN STANDARDS

This publication is protected under the Indian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any meant except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

IS : 3109 (Part I) - 1982

( Continued from page 1 ) Members

SHRI M. V. S. RAO

S H R I A. N . D U T T A ( Alternate )

S H R I S . G . R O Y

Representing

Steel Authority of India Ltd ( Bhilai Steel Plant ), New Delhi

Steel Authority of India Ltd ( Alloy Steel Plant ). New Delhi

Calcutta Port Trust, Calcutta S H R I S. K. GHOSHAL ( Alternate )

S H R I B . B . SHARMA

S H R I O M PRAKASH ( Alternate ) Col. R. SHIVDASANI

Heavy Engineering Corporation Ltd ( HMBP ), Ranchi

Ministry of Defence ( DGI ) SHRI A. M. SUBRAMANIAM ( Alternate )

S H R I S . N . SUMAN

S H R I T . N . UBOVEJA

S H R I P. S . D A S , Director ( MCPD )

Ministry cf Shipping and Transport ( Develop-ment Wing )

Directorate General of Supplies & Disposals ( Inspection Wing ), New Delhi

Director General, ISI ( Ex-officio Member )

Secretary

S H R I V. K. SEHGAL Deputy Director ( MCPD ), ISI

Chains Subcommittee, MCPD 9 : 1

Convener S H R I P. K. NEVATIA

Members

S H R I S . V. A P T E ( Alternate to Shri P. K. Nevatia )

DR P. K. CHAKRAVARTY S H R I N . B . GHAUDHARI

Indian Link Chain Manufacturers Ltd, Bombay

Tractel-Tirfor India Pvt Ltd, New Delhi W. H. Brady & Co Ltd, Bombay

S H R I P. VENKATRAMAN ( Alternate ) S H R I B . L . C H I T L A N G I A Indian Chain Manufacturing Co, Calcutta

S H R I PRADIP GHITLANGIA ( Alternate ) S H R I ASHOK V. O Z A

S H R I T . C. P H I L I P ( Alternate ) S H R I S . C . R O Y

Ashok Steel Chain Manufacturing Co, Bombay

Calcutta Port Trust, Calcutta S H R I S. K. GHOSHAL ( Alternate )

S H R I T . N . U B O V E J A

S H R I R . K . VYAS

Directorate General of Supplies & Disposals ( Inspection Wing ), New Delhi

Hercules Hoists Ltd, Bombay

2

IS : 3109 (Part I) - 1982

Indian Standard SPECIFICATION FOR

SHORT LINK CHAIN, GRADE M (4) PART I NON-CALIBRATED LOAD CHAIN FOR

LIFTING PURPOSES

( Second Revision )

0. FOREWORD 0.1 This Indian Standard (Second Revision) was adopted by the Indian Standards Institution on 26 February 1982, after the draft finalized by the Lifting Chains and Associated Fittings and Components Sectional Committee had been approved by the Marine, Cargo Movement and Packaging Division Council. 0.2 This standard was first published in 1965 and the first revision was issued in 1970. The major changes in the second revision relate to rationa-lizing the nominal sizes of the chains to bring them in line with interna-tional practice. Moreover, under mechanical properties, the minimum energy absorption factor has been deleted and in place of guaranteed mini-mum elongation at fracture, the concept of minimum total ultimate elongation has been introduced.

0.3 The reliability of chains is an important factor and, therefore, it is recommended that supplies should be obtained from manufacturers posses-sing adequate facilities for heat treatment and testing, and employing competent staff for detailed inspection.

0.4 Users are warned that a chain shall not be taken as complying with this standard, unless the specified tests have been made and the test requirements obtained in the presence of a competent person representing the purchaser. Where the quantity of chain ordered is insufficient to war-rant the expense of special inspection, it is recommended that the chain should be sent to a recognized test house for the specified tests and examination.

0.5 Repairs to a chain shall be performed, where possible, by the original chain makers. Where this is not possible, they shall be performed by a

3

IS : 3109 (Part-I) - 1982

qualified chain maker or chain tester according to the instructions of the maker. 0.6 In the preparation of this standard considerable assistance has been derived from ISO 1835-1980 Short Link Chain for Lifting Purposes — Grade M(4), Non-calibrated, for Chain Slings, etc., issued by the Inter-national Organization for Standardization (ISO). 0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, express-ing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the roun-ded off value should be the same as that of the specified value in this standard.

1. SCOPE 1.1 This standard covers the requirements for lifting chains, Grade M(4), non-calibrated, for use on cranes, in chain slings and for general lifting purposes. These are electrically welded round steel short link chain fully heat-treated and tested and comply with the general conditions of accep-tance of IS : 56l6.1982†.

The sizes from 6 to 45 mm are covered in this standard.

2. TERMINOLOGY

2.1 For the purpose of this standard, the definitions given in IS : 5616-1982† shall apply.

3. DIMENSIONS 3.1 Material Diameter (d) — The material diameter, defined and measured in accordance with the requirements of IS : 5616-1982†, shall be as given in Table 1.

3.1.1 Tolerance on Material Diameter — For sizes up to and including 16 mm the diameter, d, of the material in the finished link shall nowhere differ from the nominal diameter by more than + 0.5 mm or — 6 percent, except at the weld.

For sizes 18 mm and over, the diameter, d, of the material in the finished link shall nowhere differ from the nominal diameter by more than ±5 percent, except at the weld.

*Rules for rounding off numerical values ( revised ). †Short link chain for lifting purposes : General conditions of acceptance (first

revision).

4

IS : 3109 (Part-I) - 1982 T

AB

LE

1 D

IMEN

SIO

NS

OF

GR

AD

E M

( 4

) NO

N-C

ALI

BRA

TED

CH

AIN

( C

lause

3.1

)

All

dim

ensio

ns in

mill

imet

res.

NO

MIN

AL

SI

ZE

d n

6 7.1*

8 9*

10

11

12

14

16

18

20

22

25

28

32

36

40

45

DIA

ME

TE

R

TO

LE

RA

NC

E

(d

- d n

)

+ 0.

5 –0

.36

+ 0.

5 –0

.43

+ 0.

5 –0

.48

+ 0.

5 –0

.54

+ 0.

5 –0

.60

+ 0.

5 –0

.66

+ 0.

5 –0

.72

+ 0.

5 –0

.84

+ 0.

5 –0

.96

± 0.

90

± 1.0

±

1.1

± 1.

25

± 1.

4 ±

1.6

± 1.

8 ±

2.0

± 2.

25

MA

XIM

UM

TO

LE

RA

NC

E A

T

THE

W

EL

D

Typ

e 1

(dw –

d)

0.6

0.71

0.

8 0.

9 1.

0 1.

1 1.

2 1.

4 1.

6 1.8

2.0

2.24

2.

5 2.

8 3.

2 3.

6 4.

0 4.

5

Typ

es 2

& 3

(d

w

– d)

1.2

1.

42

1.6

1.8

2.0

2.2

2.4

2.8

3.2

3.6

4.0

4.4

5.0

5.6

6.4

7.2

8.0

9.0

Typ

e 3

(G –

d)

2.

1 2.

5 2.

8 31

5 3.

5 3.

85

4.2

4.9

5.6

6.3

7.0 7.7

8.75

9.

8 11

.2

12.6

14

.0

15.7

5

OU

TS

IDE

L

INK

L

EN

GT

H L

IMIT

S

Max

5d

n 30

36

40

45

50

55

60

70

80

90

100

110

125

140

160

180

200

225

Min

4.

75 d

n

28

34

38

43

47

52

57

66

76

85

95

104.

5 11

9 13

3 15

2 17

1 19

0 21

4

MA

XIM

UM

OU

TSI

DE

L

INK

W

IDT

H

AW

AY

FR

OM

W

EL

D

Wm

ax

3.5

d n

21

25

28

32

35

39

42

49

56

63

70

77

88

98

112

126

140

158

*The

se si

zes w

ill b

e su

pplie

d su

bjec

t to

agre

emen

t bet

wee

n th

e m

anuf

actu

rer a

nd th

e pu

rcha

ser.

5

IS : 3109 ( Part I ) - 1982

3.1.2 Tolerances at the Weld — The dimensions of the steel at the weld shall nowhere be less than the diameter, d, of the steel adjacent to the weld, or exceed it by more than the following tolerances:

Type 1 : 10 percent of the nominal diameter in any direction; Type 2 : 20 percent of the nominal diameter in any direction; and Type 3 : 20 percent of the nominal diameter in the direction per-

pendicular to the plane of the link and 35 percent in other planes.

NOTE 1 — Type 1 eliminates functional problems such as kinking or locking bv severely limiting the weld oversize to 10 percent of the nominal diameter. Both Types 2 and 3 ensure freedom from these hazards by allowing the oversize beyond the 10 percent allowed under Type 1 to certain areas of the link only (see Fig. 1), thus providing clearance where required.

3.1.3 Area Affected Dimensionally by Welding — The weld or welds are positioned in the centre of one or both legs of the link. The area affected dimensionally by welding shall not extend by more than 0.6 times the material diameter to either side of the centre of the link.

3.2 Length and Width — The outside dimensions of the links shall fall between the following limits ( see Fig. 2 ) :

Length (l) — Not more than 5 times and not less than 4.75 times the size.

Outside Width (w) — Not more than 3.5 times the size, except at the weld. At the weld, not more than 1.05 times the adjacent width for Type 1 and not more than 1.10 times the adjacent width for Types 2 and 3.'

4.1 The steel used shall be produced by the open hearth or electric pro-cess or by oxygen blown process.

In its finished state, as supplied to the chain maker, the steel shall meet the following requirements as determined by check analysis on the rod, wire or finished link.

It shall be fully killed, shall possess reliable welding quality and, when heat-treated, be capable of producing in the finished chain the mechanical properties required by this specification.

Its content of sulphur and phosphorus shall be restricted as follows: Cast Analysis ( Percent )

Sulphur, Max 0.045 Phosphorus, Max 0.040

Check Analysis ( Percent )

0.050 0.045

6

4. MATERIAL

IS : 3109 (Part I) - 1982

FIG

. 1

MA

TE

RIA

L A

ND

WE

LD

TO

LE

RA

NC

ES

7

FIG. 2 GRAIN AND LINK DIMENSIONS

The steel shall be made in conformity with a suitable deoxidization practice to obtain an austenitic grain size of 5 or finer, when tested in accordance with IS : 2853-1964*.

This could be accomplished, for example, by ensuring that it con-tains sufficient aluminium or an equivalent element to permit the manu-facture of chains stabilized against strain and age-embrittlement during service; a minimum value of 0.02 percent metallic aluminium is given for guidance.

Within the above limitations it is the responsibility of the chain maker to select steel, so that the finished chain, suitably heat-treated, meets the mechanical properties specified in this standard. 5. HEAT TREATMENT 5.1 All chains shall be normalized or hardened and tempered before being subjected to the proof force. 6. PROOF LOADING 6.1 After manufacture, heat treatment and other processing, a finished chain shall be subjected to the proof force given in Table 2 as specified in IS : 5616-1982†. 7. TEST REQUIREMENTS 7.1 General — Actual test forces for each size are given in Table 2. The mechanical properties required for this grade of chain are summarized in Table 3.

*Method of determining austenitic grain size of steel. †Specification for short link chain for lifting purposes : General condition of accep-

tance (first revision).

9

IS : 3109 (Part I) - 1982

TABLE 2 GRADE M ( 4 ) TEST REQUIREMENTS AND WORKING LOAD LIMITS

(Clause 7.1) NOMINAL SIZE dn

(1) mm 6 7.1 8 9

10 11 12 14 16 18 20 22 25 28 32 36 40 45

PROOF FORCE TO WEIGH THE WHOLE CHAIN IS

SUBJECTED

(2) kN 11.4 15.9 20.2 25.5 31.5 38.1 45.3 63.0 81.0

102.0 126.0 155.0 197.0 247.0 322.0 408.0 503.0 637.0

MINIMUM BREAKING FORCE

(3) kN 22.8 31.8 40.4 51.0 63.0 76.2 90.6

126.0 162.0 204.0 252.0 310.0 394.0 494.0 644.0 816.0

1 006.0 1 274.0

WORKING LOAD LIMIT

(4) onnes 0.57 0.8 1.0 1.25 1.6 1.9 2.3 3.2 4.0 5.0 6.3 8.0

10.0 12.5 16.0 20.0 25.0 32.0

TABLE 3 MECHANICAL PROPERTIES (Clause 7.1)

MECHANIGAL PROPERTY

(1) Mean stress at specified minimum breaking

force

Mean stress at proof force

Ratio of proof force to specified minimum breaking force

Specified minimum total ultimate elongation

Mean stress at working load limit

REQUIREMENT

(2) 400 MPa (N/mm2)

200 MPa (N/mm2)

50 percent

20 percent

100 MPa (N/mm2) NOTE — The stresses quoted in the above table are obtamed by dividing the

force by the total cross-section of both sides of the link, that is, they are mean stresses. The stress is in fact not uniform, and particularly at the extrados the maxi-mum fibre stress is considerably greater.

10

IS : 3109 (Part I) - 1982

7.2 Selection of Samples — Samples shall be selected as specified in IS : 5616-1982*. The length of the lot from which a sample is selected by the inspector is 200 m or part thereof. 7.3 Static Tensile Test

7.3.1 The breaking force determined in accordance with IS: 5616-1982* shall not be less than that specified in Table 2.

7.3.2 Total Ultimate Elongation — The total ultimate elongation, as defined in IS : 5616-1982*, shall not be less than 20 percent. 8. INSPECTION 8.1 Acceptance Procedure — The acceptance procedure specified in IS : 5616-1982* shall be followed to determine the acceptability or other-wise of the chain. 9. MARKING 9.1 Quality Marking — The chain shall be marked with ' M ' or ' 4 ' in

a circle, that is, or , as recommended in IS : 5616-1982*.

9.2 Identification Marking — The identification marking shall comply with the requirements of IS : 5616-1982*. 9.3 Inspection Marking — Inspection marking shall comply with the requirements of IS : 5616-1982*. 10. TEST CERTIFICATE 10.1 The manufacturer shall supply a certificate of test and examination with every supply of chain. A typical form is given in Appendix B of IS : 5616-1982*. The certificate shall give the following information:

a) Name of the chain maker, b) Crade of material, c) Size of chain, d) Identification marking, e) Proof force applied to the whole chain, f) Number of test samples taken, g) Breaking force of each sample, and h) Total ultimate elongation at fracture. NOTE — All testing shall be done in the presence of a competent person or in an

approved testing establishment.

*Specification for short link chain for lifting purposes : General conditions of accep-tance (first revision).

11

IS : 3109 (Part I) - 1982

10.2 The certificate shall state that the whole of the chain was subjected to the specified proof force, and it was subsequently examined by a competent person, and that it complies with this standard. It shall also state the name and address of the testing establishment and the status of the signatory.

12

BUREAU OF INDIAN STANDARDS Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 Telephones: 323 0131, 323 3375, 323 9402 Fax : 91 11 3234062, 91 11 3239399, 91 11 3239382

Telegrams : Manaksanstha (Common to all Offices)

Central Laboratory: Plot No. 20/9, Site IV, Sahibabad Industrial Area, SAHIBABAD 201010

Regional Offices:

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 *Eastern : 1/14 CIT Scheme VII M, V.I.P. Road, Maniktola, CALCUTTA 700054 Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022 Southern : C.I T Campus, IV Cross Road, CHENNAI 600113 †Western : Manakalaya, E9 Behind Marol Telephone Exchange, Andheri (East),

MUMBAI 400093

Branch Offices:

'Pushpak', Nurmohamed Shaikh Marg, Khanpur, AHMEDABAD 380001 ‡Peenya Industrial Area, 1st Stage, Bangalore - Tumkur Road,

BANGALORE 560058 Gangotri Complex, 5th Floor, Bhadbhada Road, T T Nagar, BHOPAL 462003 Plot No. 62-63, Unit VI, Ganga Nagar, BHUBANESHWAR 751001 Kalaikathir Buildings, 670 Avinashi Road, COIMBATORE 641037 Plot No. 43, Sector 16 A, Mathura Road, FARIDABAD 121001 Savitri Complex, 116 G. T. Road, GHAZIABAD 201001 53/5 Ward No. 29, R. G. Barua Road, 5th By-lane, GUWAHATI 781003 5-8-58C, L. N. Gupta Marg, Nampally Station Road, HYDERABAD 500001 E-52, Chitaranjan Marg, C-Scheme, JAIPUR 302001 117/418 B, Sarvodaya Nagar, KANPUR 208005 Seth Bhawan, 2nd Floor, Behind Leela Cinema, Naval Kishore Road,

LUCKNOW 226001 Patllputra Industrial Estate, PATNA 800013 T C. No. 14/1421, University P O. Palayam,

THIRUVANANTHAPURAM 695034 NIT Building, Second Floor, Gokuipat Market, NAGPUR 440010 Institution of Engineers ( India ) Building, 1332 Shivaji Nagar, PUNE 411005

*Sales Office is at 5 Chowringhee Approach, P. O. Princep Street, CALCUTTA 700072

†Sales Office is at Novelty Chambers, Grant Road, MUMBAI 400007 ‡Sales Office is at 'F' Block, Unity Building, Narashimaraja Square,

BANGALORE 560002

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