[PDF] IS 2004 (1991): Carbon steel forgings for general engineering



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IS 2004 (1991): Carbon steel forgings for general engineering

Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regim e of right to information for citizens to secure access to information under the contr ol of public authorities, in order to promote transparency and accountability in the working of ev ery public authority, and whereas the attached publication of the Bureau of Indian Standards i s 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 ava ilable to promote the timely dissemination of this information in an accurate manner to the pu blic.

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 जी1

Mazdoor Kisan Shakti Sangathan

"The Right to Information, The Right to Live"

!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है"

Bhart hari - N ti atakam "Knowledge is such a treasure which cannot be stolen" "Invent a New India Using Knowledge" है"ह"हIS 2004 (1991): Carbon steel forgings for general engineering purposes [MTD 16: Alloy Steels and Forgings]

IS 2004:1991

( Reaffirmed 1996 ) ( TffmT 's;ritwq )

Indian Standard

CARBONSTEELFORGINGSFORGENERAL ENGINEERINGPURPOSES-SPECIFICATION ( Third Revision )

Third Reprint MARCH 1997

UDC 669'14 - 134

0 BIS 1991

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

L)ecembar 199 1 Price Group 2

Steel Forgings Sectional Committee, MTD 18

FOREWORD

This Indian Standard ( Third Revision ) was adopted by the Bureau of Indian Standards, after the draft finalized by the Steel Forgings Sectional Committe: had been approved by the Metallurgical

Engineering Division Council.

This standard was first issued in 1962 and subs:quently revised in 1970 and 1978. Based on the experience gained during these years in the use of this standard, it has been decided to further revise this standard. For the benefit of the purchaser an informative Annex ( see Annex A ), giving particulars to be specified while ordering for these steel forgings, has been included. This standard contains clauses 6.2, 7.3, 8.1, 10.1, 10.1.1, 11.1, 12.1, 12.1.2.4, 12.1.2.5 and 13.1 which call for agreement between the purchaser and the manufacturer. For the purpose of deciding whether a particular requirement of this standard is compiled 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 'Rules for rounding off numerical values ( revised )'. The number of significant places retained in the rounded off value should be the same as that of the spedified value in this standard.

IS 2004 : 1991

Indian Standard

CARBONSTEELFORGINGSFORGENERAL ENGINEERINGPURPOSES-SPECIFICATION ( Third Revision )

1 SCOPE

1.1 This standard covers the requirements for

nine classes of carbon steel forgings for general engineering purposes, designated as Class 1, lA,

2, 2A, 3, 3A, 4, 5 and 6 ( see Table 1 ).

2 REFERENCES

2.1 The following Indian Standards are necessary

adjuncts to this standard.

IS No.

228 :

1387 : 1967

1599 : 1985

1608 : 1972

1762
( Part 1 ) : 1974

1875 : 1991

1956
(Part 6 ) : 1976

3469 (Parts 1 to

3 ) : 1974 Title

Methods for chemical ana-

lysis of steel ( second revision )

General requirements for

the supply of metallurgical materials ( first revision )

Method for bend test

( second revision )

Method for tensile testing

of steel products ( fitst revision )

Code for designation of

steels: Part 1 Based on letter symbols ( first revision )

Carbon steel billets, blooms,

slabs and bars for forgings ( fifth revision )

Glossary of terms relating to

iron and stee 1: Part 6 Forg- ing ( including drop forging )

Tolerances for closed die

steel revision ) forgings ( first 3 TERMINOLOGY

3.1 For the purpose of this standard, the

definitions given in IS 1956 ( Part 6 ) : 1976 shall apply.

4 SUPPLY OF MATERIAL

4.1 General requirements relating to the supply

of carbon steel forgings shall be as laid down in IS 1387 : 1967.

4.2 The steel forgings covered by this standard

should be ordered and delivered in any one or combination of the following: a) Chemical composition, and b) Tensile properties and/or hardness.

5 MANUFACTURE

5.1 All forgings shall be manufactured from

killed steel produced by the open hearth, electric, basic-oxygen or any other suitable method which will meet the requirements of this standard.

5.2 The raw material for the production of

carbon steel forgings shall be in accordance with

IS 1875 : 1991. Wherever necessary further

reduction ratio from the raw material to the forgings shall be as agreed to between the supplier and the purchaser.

6 DIMENSIONAL TOLERANCES

6.1 All forgings shall be free from harmful

defects and produced to the prescribed dimensions.

Table 1 Chemical Composition

(Clauses 1.1, 7.1, 7.3 and 12.1.1 )

Class Designation

[ See IS 1762 Constituent, Percent r------ -_-----h--------,--~___ ( Part 1 ) : 1974 ] Carbon Silicon Manganese Sgay r. Phos&ys, (1) (2) (3) (4) (5) (6) (71

1 14C6 0.10-0.18 0.15-0.35 0.40-0.70 0.04 0.04

1A 15C8 0~10-0*20 0.15-0.35 0.60-0.90 0.04 0.04

2 2OC8 0.15-0.25 0.15-0'35 0.60-0.90 0.04 0.04

2A 25C8 0.20-0.30 0.15-0.35 0.60-0.90 0'04 0.04

3 3OC8 0.25-O-35 0.15-0.35 0.60-0.90 0.04 0.04

3A 35C8 0~30-0~40 0.15-o-35 0.60-0.90 0'04 0 04

4 45C8 0.40-0.50 0.15-0.35 0.60-0.90 0'04 0.04

5 55C8 0.50-0.60 0.15-0.35 0.60-0.90 0.04 0.04

6 65C6 0*60-O-70 0.15-0.35 0.50-0.80 0.04 0 04

NOTE

- When the steel is aluminium killed or killed with both aluminium and silicon, the requirements of minimum silicon content shall not apply. For aluminium killed steel the total aluminium content shall be

within 0.02 too.05 percent, 1

IS 2004 : 1991

6.2 Unless otherwise agreed, the forging

tolerances shall conform to the following standards:

For drop and press

forgings IS 13$6i ( Part 2 ) :

For upset forgings IS fi;: ( Part 3 ) :

6.2.1 Weight and quantity tolerances shall

conform to IS 3469 ( Part 1 ) : 1974.

7 CHEMICAL COMPOSITION

7.1 Ladle Analysis

The ladle analysis of steel, when carried out

either by the methods specified in the relevant parts of IS 228 or any other established instru- mental/chemical method, shall be as given in

Table 1. In case of any dispute, the procedure

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