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है”ह”ह

IS 8350 (1977): Deviations for untoleranced dimensions ofspheroidal or nodular graphite iron castings [MTD 6: Pigiron and Cast Iron]

IS : 8350 - 1977

Indian Standard

DEVIATIONS FOR UNTOLERANCED DIMENSIONS OF SPHEROIDAL OR NO~DULAR

GRAPHITE IRON CASTINGS

Cast Iron and Malleable Cast Iron Sectional Committee, SMDC 9

Chairman

DR PRANLAL PATEL Representing

Malleable Iron & Steel Castings Bombay

Co Pvt Ltd,

Members

SHRI M. C. AICH

DR S. N. ANANT NARAIN &RI R. M. BALANI

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

International Nickel ( India ) Pvt Ltd, Bombay Directorate General of Technical Develooment.

New Delhi SHRI T. R. MOHAN RAO ( AIternnte )

SHRI B. C. BISWAS SHRI D. G. DODHIA

National Test House, Calcutta Shah Malleable Castrngs Ltd, Thane

SHRI K. S. GARG Electrosteel Castings Ltd, Calcutta SHRI S. N. AGRAWAL ( Alternate )

SHRI GOVIND SINGH Greysham & Co, Delhi SHRI F. S. KATPITIA Jyoti Ltd, Vadodara

SHRI M. R. SHAH ( Alternate ) DR K. V. KRISHNAMURTHY Hindustan Steel Ltd ( R & D ), Ranchi SHRI K. K. MALLICK CDR K. N. NAIR

Ministry of Defence ( DGOF ), Calcutta Pioneer Equipment Co Pvt Ltd, Vadodara

SHRI P. V. R. RAO ( AIternate 1 ’ SHRI P. C. NEOGY ‘Indian Iron & Steel Co Ltd, Kulti

SHRI K. S. LAL ( AIternate ) SHR~ R. A. PANDVRANGA Best & Crompton Engg Ltd. Madras

SHRI M. BAPUJEE ( Alternate ) DR P. S. PATTIHAL

SHRI B. K. GIRI ( Alternate ) Tata Engineering &Locomotive Co Ltd, Jamshedpur

SHRI A. S. N. RAO Bharat Heavy Electricals Ltd, New Delhi SHRI A. K. MITTAL ( Alternate I ) SHRI A. SOMASUNDARAM ( Alternate II )

SHRI G. K. P. RAO Oil and Natural Gas Commission, Dehra Dun SHRI B. G. SAS~RY

SHRI M. S. DALVI ( Alternate ) Ductron Castings Ltd, Hyderabad

(Continued on page 2 )

@ Copyright 1977

INDIAN STANDARDS INSTITUTION This publication is protected under the Indian Copyright 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.

IS:8350 -1977

( Continued from page 1 )

Members Representing

SENIOR CHEMIST & METALLURGIST, Ministry of Railways CHITTARANJAN LOCOMOTIVE WORKS, CHITTARANJAN

ASSISTANT DIRECTOR ( MET )- INSP-11, RESEARCH DESIGNS & STANDARDS ORGANIZA- TION, LUCKNOW ( Alternate )

SHRI C. S. S. SETTY Ennore Foundries Ltd, Madras SHRI T. S. VENKOBA RAO C Alternate j

SHRI J. N. SHARMA Heavy Engineering Corporation Ltd, Ranchi SHRI T. N. TANDON ( Alternate )

SHRI P. J. SHENOY Kesoram Spun Pipes & Foundries, Calcutta SHRI S. C. NARSARIA ( Alternate )

SHRI R. K. SINHA Fertilizer Corporation of India Ltd, Sindri SHRI D. SRINIVASAN Joint Plant Committee, Calcutta

SHRI B. P. GHOSH ( Alternate ) DR S. K. TIWARY National Metallurgical Laboratory (CSIR ),

Jamshedpur SHRI C. R. RAMA RAO,

Director ( Strut & Met ) Director General, ISI ( Ex-officio Member)

Secretary

SHRI SHANTI SWARU~ Assistant Director ( Metals ), IS1

Spheroidal Graphite Iron Castings Subcommittee, SMDC 9 : 2

Convener

SHRI K. V. CHINNAPPA International Nickel India ( Pvt ) Ltd, Bombay

Members

SHRI S. C. CHAKRABORTY Ministry of Railways SHRI R. N. GANDHI Premier Automobiles Ltd ( Meehanite Foundry ),

Bombay SHRI F. A. JASDANWALA Indian Standard Metal Co Ltd, Bombay

SHRI C. CHATTERJEE ( Alternate ) SHRI F. S. KATPITIA Jyoti Ltd, Vadodara

SHRI M. R. SHAH ( Alternate ) SHRI D. KUMAR Malviya Regional Engineering College, Jaipur SHRI S. MAITRA SHRI S. NAGANA~HAN

Indian Smelting and Refining Co Ltd., Thane Bharat Heavy Electricals Ltd, Tiruchlrapalli

SHRI K. P. S. NAIR The Malleable Iron & Steel Castings Co Pvt Ltd, Bombay

SHRI ARUN SHAH ( Alternate ) SHRI S. B. PATHAK Business Combine Ltd, Nasik

SHRI P. R. THAKUR ( Alternate ) SHRI R. C. PROSAD Heavy Engineering Corp Ltd, Ranchi

SHRI T. N. TANDON ( Alternate ) SHRI G. PREMCHAND Spheroidal Castings Ltd, Madras

SHRI K. N. RANGARAJAN C Alternate 1 SHRI B. G. SASTRY Duction Castings Ltd, Hyderabad

SHRI M. S. DALVI ( Alternate ) SHRI S. THIYAGARAJAN Southern Alloy Foundries Pvt Ltd, Madras

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IS : 8350 - 1977

Indian Standard

DEVIATIONS FOR UNTOLERANCED DIMENSIONS OF SPHEROIDAL OR NODULAR

GRAPHITE IRON CASTINGS

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 10 February 1977, after the draft finalized by the Cast Iron and Malleable Cast Iron Sectional Committee had been approved by the Structural and Metals Division Council.

0.2 The main object of this standard is to help the producers and the users of spheroidal or nodular graphite iron castings, improve and simplify their production and distribution, eliminate waste of time and material involved in production and set up standards of quality and dimensions. It is hoped that this standard will satisfy a long-felt need by simplifying the application of agreed limits to drawing.

0.3 Casting tolerances in spheroidal or nodular graphite iron castings depend mainly on the manufacturing process, that is, hand-moulding, machine moulding or any other improved process. fied in this standard relate to unmachined castings.

The tolerances speci-

0.4 This standard keeps in view the manufacturing and trade practices followed in the country in this field. While preparing this standard, assistance has been derived from DIN 168.5 ( Blatt 1 ) : 1962 Variations in dimensions without tolerance indication for castings of iron with spheroidal or nodular graphite; tolerance group A and B issued by Deutscher Normenausschuss.

0.5 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing 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 covers deviations for untoleranced dimensions of

*Rules for rounding off numerical values ( revised ).

3

IS : 8350 - 1977

spheroidal or nodular graphite iron castings. Two classes are dealt with as given below:

Class 1 Deviations for spheroidal or nodular graphite iron castings involving machine moulding.

Class 2 Deviations for spheroidal or nodular graphite iron castings involving hand moulding.

2. DEVIATIONS

2.1 Length, Width and Height - The deviations on untoleranced dimensions of spheroidal or nodular graphite iron castings shall be as given in Table 1.

TABLE 1 DEVIATIONS ON UNTOLERANCED LENGTH, WIDTH AND HEIGHT OF SPHEROIDAL OR NODULAR

GRAPHITE IRON CASTINGS

( Clauses 2.1 and 2.3 )

All dimensions in millimetres.

TOLERANCE RANGE OF NOMINAL DIMENSIONS CLASS C-- ---- ---7

up to Over Over Over Over 18 18 50 180 500

:: l% 5% lZ0

(1) (2) (3) (4) (5) (6) (7)

(-Outside dimension +1.2 -1 Zf.5

+6 +8 2t.5 -3.5 -5

1 I ) Inside dimension +l +1*5 +2.5 +3._5 +5 1 -1.2 -2 -4 -6 -8

rOutside dimension +2 I -1 I!:

+5 +9 -3.5 _‘I -7

2 1 Inside dimension + 1 +2 +3.5 +5 +7 1 -2 -3 -5 -7 -9

2.2 Wall Thickness-The deviations on untoleranced wall thickness of spheroidal or nodular graphite iron castings shall be as given in Table 2.

4

IS : 8350 - 1977

TABLE 2 DEVIATIONS ON UNTOLERANCED WALL THICKNESS OF SPHEROI-DAL OR NODULAR

GRAPHITE IRON CASTINGS

( Clauses 2.2 and 2.2.1 )

All dimensions in millimetres.

TOLERANCE CLASS

(I)

1

2

RANGE OF NOMINAL DIMENSIONS I -- L ,

up to Over lover Over 6 6 18 50

to 18 :: 1’;

(2) (3) (4) (5)

rtl +2 &?5 53-5

&-1.5 rt2.5 zt3.5 14’5

2.2.1 The deviations given in Table 2 shall also be applicable to webs and ribs of castings.

2.3 Diameters and Roundings - For the outside and inside diameters and also for roundings ( outside and inside radii ) the deviations given in Table 1 shall apply.

5

INDIAN STANDARDS

ON

CAST IRON AND MALLEABLE CAST IRON

IS:

210-1970 Grey iron castings ( second revision )

1230-1968 Cast iron rain-water pipes and fittings ( firsf revision )

1536-1975 Centrifugally cast ( spun ) iron pressure pipes for water, gas and sewage ( second revision )

1537-1975 Vertically cast iron pressure pipes for water, gas and sewage ( first revision)

1538 (Parts I to XXIII)-1975 Cast iron fittings for pressure pipes for water, gas and sewage ( second revision )

1729~~1964 Sand cast iron spigot and socket soil, waste and ventilating pipes, fittings and accessories

1865-1974 Iron castings with spheroidal or nodular graphite ( second revision )

1879 (Parts I to X)-1975 Malleable cast iron pipe fittings ( first revision )

2107-1977 2108-1977 2640-1977 2749-1974 3005-1964

3355-1974

3486-1966 3516-1966 3896-1966 3989-1970

4771-1972 5519-1969 5531-1969 5787-1970 5788-1970

5789-1970

6163-1971 6331-1971

6418-1971 6629-1972 7181-1974 7520-1974

Whiteheart malleable iron castings ( first revision )

Blackheart malleable iron castings ( first revision )

Pearlitic malleable iron castings ( first revision )

Austenitic iron castings ( first revision )

Grey cast iron ingot moulds, stools and slag ladles Grey iron castings for elevated temperatures for non-pressure containing parts ( first revision )

Cast iron spigot and socket drain pipes Cast iron pipe flanges and flanged fittings for petroleum industry Comparison of Indian and overseas standards for iron castings Centrifugally cast ( spun ) iron spigot and socket soil, waste and ventilating pipes, fittings and accessories ( first revision )

Abrasion-resistant iron castings ( first revision )

Deviations for untoleranced dimensions of grey iron castings Cast iron specials for use with asbestos cement pressure pipes Spheroidal or nodular graphite iron castings for paper mill dryer rolls Iron castings with spheroidal or nodular graphite for pressure containing parts for use at elevated temperatures Austenitic spheroidal iron castings for pressure-containing parts suitable for low-temperature service Centrifugally cast (spun) iron low pressure pipes for water, gas and sewage

Automotive grey iron castings Cast iron and malleable cast iron flanges for general engineering purposes

Cast iron rolls Horizontally cast iron double flanged pipes for water, gas and sewage Corrosion-resistant high silicon iron-castings

AMENDMENT NO. 1 OCTOBER 1992 TO

IS 8350 : 1977 DEVIATIONS FOR UNTOLERANCED DIMENSIONS OF SPHEROIDAL OR NODULAR

GRAPHITE IRON CASTINGS

( Page 5, clause 2.3 ) - Insert the following new clause after 2.3:

‘2.4 Closer tolerances other than those mentioned in Tables 1 and 2 shall be as agreed to between the manufacturer and the purchaser.’

,(MTD6) Reprography Unit, BE, New Delhi, India

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