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“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

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“The Right to Information, The Right to Live”

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“Invent a New India Using Knowledge”

है”ह”ह

IS 6754 (1972): Aluminium Alloy Ingots for Bearings [MTD 7:Light Metals and their Alloys]

IS: 6754 - 19?2

Indian Standard

Si’ECIFICATION FOR ALUMINIUM ALLOY INGOTS FOR BEARINGS

Light Metals and Their Alloys Sectional Committee, SMDC 10

Chairman

SERI B. K. MUBTHY

Representing

Indian Aluminium Co Ltd, Calcutta

Members

SHRI V. D. AQARWAL SHRI V. K. AQRA%AL

The Aluminium Corporation of India Ltd, Calcutta Hindustan Aluminium Corporation Ltd, Renukoot

( Mirzapur ) SHRI RAVE KANT ( Alternute )

SHRI N. C. BA~CHI National Test House, Calcutta SRRI B. C. BISWAS ( Altzrnntc )

SHBI K. G. BALAKR~SHNAN NAIR Hindustan Aeronautics Ltd, Bangalore SHRI B. N. BIS~AS Bharat Heavy Electricals Ltd, Hyderabad DR V. CHANDRASEKHAB Ministry of Defence ( R & D )

Sanx P. K. MAEAPATBA ( Alternate ) SHRI D. D. CIrOwDFfURY Directorate of Technical Development and Produc-

tion ( Air ), Air Headquarters, New Delhi SERI R. P. VARSHNEY ( Alternate )

Srrsr D. M. DAVAR Premier Automobiles Ltd, Bombay SHRI A. T. BORATE ( Affertwte)

DEPUTY DIRECTOR RESEAIWH Ministry of Railways ( MET ) -2, RESEARCH, DESIQNS AND STANDARDS OROANIZATION, LUCKNOW

DEP~Y DIRECTOR, STAX- DARDS (CARR )-I, RESEARCH, DESIQNS AND STANDABDS ORQANIZATIOZ-~, LUCKNOW ( Alternate I )

CHEMIST & M~TALLURCUST, NORTHEASTERNRAILWAY, GORAKHPUR ( AlternateII)

SHRI P.K. GAXGOPADEYAY' Ministry of Defence ( DGI ) SERI D. K. MUKEERJEE ( Altckuatc )

SRRI N. GOPAL~RWHNAN Indian Aluminium Co Ltd, Calcutta SHRI F. A. JA~DANWALLA

SRRI C. CHATTERJEE ( Alternate ) The Indian Standard Metal Co Ltd, Bombay

( Continued on Baee 2 1

@ CoPyright 1973

BUREAU OF INDIAN STANDARDS

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

ISr6754-1972

f Continuedfionr page 1 )

Members

SRRI K. K. KAPOOR‘

Refmscnting

All Ign~~b~n-Ferrous Metal Industria Association.

SBRI W. J..FERNAN~ES ( Altnnate ) SBRI Onr KHOSLA Electrical Manufacturing Co Ltd, Calcutta

SRRI 0. P. MATEUR ( A&&~ ) SHRI D. Y. MOQHE

SBRI B. S. SETH ( Alfnnafe ) SHRI D. C. MUKHERJEA

Directorate General, Ordnance Factories, Calcutta

SHRI PEER MOHAMMED Ssar P. M. JOSEPH ( Alternate )

SHRI D. K. RAY

SHRI J. P. SEN ( Alternate ) SRRI D. H. SHAH

SHRI P. K. AMBANI ( Alternate &RI N. SHANMUQHAM SHRI B. P. SINHA

DR Y. N. TREHAN

SHRI R. K. SRI~ASTA~A, Deputy Director ( Strut & Met )

India Government Mint (Ministry of Finance ), Hyderabad

The Aluminium Industries Ltd, Kundara

Directorate General of Supplies & Disposals, New Delhi

Jccwanlal ( 1929 ) Ltd, Calcutta

The Madras Aluminium Co Ltd, Mettur Dam Directorate General of Technical Development,

New Delhi National Metallurgical Laboratory ( CSIR ),

Jamshedpur I Director General. BIS ( Ex-o&io Member )

Secretary

SHRI S. L. BALI Deputy Director ( Metals ) ,BIS

Panel for Aluminium-Based Alloys for Bearings, SMDC 10/P: 13

Convener

SHRI D. M. DA~AR Premier Automobiles Ltd, Bombay

SHRI P. R. ABEYANKAR Kir!oskar Oil Engines Ltd, Poona SHRI A. R. HAROLXAR ( Alternate )

DEPUTY DIRECTOR RESEARCE Ministry of Railways ( MET)-II, RESEARCE, DESIGNS AND STANDARDS OROANIZATION, hCKNOW

DB R. DUTTA Eyre Smelting Pvt Ltd, Calcutta SHRI N. GOPALERISHNAN Indian Aluminium Co Ltd, Calcutta

SHRI A. K. CAPRIHAS (Alternate ) SHRI F. A. JASDANWALLA The Indian Standard Metal Co Ltd, Bombay

SARI C. CHATTERJEE ( Aftcmafc) SFIRI K. NAQESEA RAO Hindustan Machine Tools Ltd, Bangalore

SHRI M. RAN~ASHI ( Altsntate)

2

IS : 6754 - 1972

Indian Standard

SPECIFICATION FOR ALUMINIUM ALLOY INGOTS FOR BEARINGS

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 20 December 1972, after the draft finalized by the Light Metals and Their Alloys Sectional Committee had been approved by the Structural and Metals Division Council.

0.2 With the development of heavy engineering industry, the amount of bearing metal requirements is increasing at a very fast rate. The industry consumes large quantities of copper, lead, zinc, tin, and antimony for bearings. Since these materials are scarce, need has been felt to substitute them with aluminium bearing alloys which have desirable bearing proper- ties and have been used in a wide variety of applications for many years.

0.3 While preparing this standard, the views of producers and consumers were taken into account and the standard has been related to the mnnu- facturing and trade practices followed in the country in this field. Also assistance has been derived from the following publications:

Metals Handbook, 8th Edition, Vol 1. Properties and Selection of Metals. American Society for Metals.

1972 SAE Handbook, Society of Automotive Engineers Inc, USA.

0.4 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 rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard specifies the requi-ements for aluminium alloy ingots for bearings.

*Rules for rounding off numerical values ( renis~d 1.

3

_-_-

IS : 6754 - 1972

2. SUPPLY OF MATERIAL

2.1 General requirements relating to the supply of material shall conform .to IS ‘: 1387-1967*.

3. MANUFACTURE

3.1 Aluminium used for the manufacture of aluminium alloy ingots for bearings shall conform to IS : 259th1964t.

4. CHEMICAL COMPOSITION

4.1 Chemical composition of aluminium alloy ingots for bearings when analysed in accordance v4vith IS : 504-1963$ shall be as given in Table 1.

TABLE 1 CHEMICAL COMPOSITION OF ALUMINIUM ALLOY INGOTS FOR BEARINGS

ELEMENT CAST ALLOT WROCGHT ALLOY c_ -._-_h__-_-_7 T__--~_--..--~

*8 482 *8 323 *83 428 *39 200 percent percent percent percent

Tin 6.5 - 7.5 5.5 - 7.0 5.5-7.0 17.5 - 22.5

Copper

Nickel

Silicon

Magnesium

Iron

Manganese

Titanium

Others total

Total of Fe+Si+Mn

w7 - 1.3

1.5 - 1.3

0.35 - 0.85

0.75 - 1.25

O%O Max

-

-

- -

0.7 - 1.3

0.7 - 1.3

0.7 Max

0.3 :Max

O-7 Max

0.10 MUX

0.20 &fax

0.30 hfux -

0.7 - 1.3

o-2 - o-7

I’0 - 2.0

0.3 ‘WZX

0.7 Max

0.10 Max

0*1on4acx

0.15 MUX

-

0.7 - 1.3

-

0.7 Max

0.7 *?&Lx

0.7 n1ax

-

0.5 Max

I.0 Max

Aluminium Remainder Remainder Remainder Remainder

‘These are alloy designations adopted in accordance with IS: 6051-1970 Code for designation of aluminium and its alloys.

5. SHAPE AND SIZE

5.1 Unless otherwise agreed to between the supplier and the purchaser, the shape and size of the ingot shall conform to IS : 1820-1963s.

*General requirements for the supply of metallurgical materials (,first ret&n). tSpecification for primary aluminium ingots for remelting for general engineering

purposes. IMethods of chemical analysis of aluminium and its alloys ( rezkd ). $Recommended shapes and sizes of aluminium notched bars and ingots for remelting

purposes.

4

IS : 4754 - 1972

6. FREEDOM FROM DEFECTS

6.1 The ingots shall be reasonably free from slag or dross.

7. SELECTION OF SAMPLES FOR CHEMICAL ANALYSIS

7.1 At least one sample shall be selected at random from every heat of each cast. Samples shall be obtained by one of the following methods:

a) wherever possible, directly from the stream of metals filling the moulds midway through the pour; or

b) by milling, drilling or sawing of the ingot after the skin of the ingot has been removed ( for details refer to IS : I8 17- 196 I* ).

8. RETEST

8.1 If a sample selected for testing fails to meet the requirements of the specification, two further samples shall be taken from the same lot of metal. If either of these samples fail to meet the requirements of the specification, the lot represented by the samples shall be rejected.

9. MARKING

9.1 All ingots shall be identified ‘by such marking as shall ensure full identification of the material. Alternatively, the ingots shall be wired in bundles; the necessary marks being stamped on a metal tag securely attached to each bundle. The supplier shall furnish a certificate that the material supplied complies with the requirements ‘of this specification.

9.1.1 The ingots may also be marked with the Standard Mark, The supplier’s certification ( stv 9.1 j shall be iml$ed. if the material is certified under the Standard Mark.

NOTE - The use of the Standard Mark is governed by the provisions of thl Bureau of Indian Standards Act, 1986 and the Rules and Regulations made there- under. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the prdducer. Standard marked products are also continuously checked by BIS for conformity to that standard as a further safeguard. Details of conditioos under which a Iicence for rhe use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards.

“Methods of sampling non-ferrous metals for chemical analysis.

5