is 4843 (1968): code for designation of ferrous …is : 4843 - lita indian standard code for...
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IS 4843 (1968): Code for designation of ferrous castings[MTD 14: Foundry]
IS : 4843 - lita
Indian Standard CODE FOR DESIGNATION OF
FERROUS CASTINGS
Metal Standards Sectional Committee, SMDC 1
Chairman Representing
SHRI R.G. BHATAWADEKAR The Binani Metal Works Ltd, Calcutta
Members Da U. ?i. BHRAX~
SRRI K. H. SHARXA ( Altcmete ) The Indian Iron & Steel Co Ltd, Burnpur
SHRI B. N. DAS National Metallurgical Laboratory (CSIR ),
Dn B1 R. DEORIS H’n&%?!z; Ltd Ranchi 1 , SHRI K. C. SOM ( Alternate j
DIRECTOR ( M & C ) RDSO, Ministry of Railways LTXKNOW
PHonric-Tros ENOINEER EASTERN RAILWAY, J.k- nshLrCn ( rfltcrnelc I j
ASSI~TAXT DIRECTOR ( M. S. ), RDSO, LTCKNO~ ( AlUrnate II )
SHRI N. KRISHNASWAT+~I Direc;~tot~l~,eneral of Technical Development, j
SHRI D. P. LAHIRI Defence Metallurgical Research Laboratory, Ministry
SHRI A. KAILAEA~~ ( Alternate ) of Defencc ( R & D )
SHRI S. K. LAHIRI Directorate General of Supplies & Disposals ( Inspec- tion Wing j Ministry of Works, Housing &
SHRI P. G. V.,Rao (Alternate j SUPPlY )
SHRI K. P. K. MENON SHRI AXIL MITRA
Ministry of Defcnce ( DGI ) Indian Institute of Foundrymen, Calcutta
SHRI K. SRIXIVASAN ( Alternate ) SKISI P. MITRA Sam S. N. M~~F.R.IEE
Indian Tune Co Ltd, Jamshedpur National Test House, Calcutta
SERI B. K. MV~~TRY Indian Aluminium Co Ltd, Calcutta SARI Tz. GOPALKRISHSAN ( Alternate )
DR S. R. PRAXANIIZ SHRI K. iX;. P. RAO
Ministry of Steel, Mines & Metals
Snnr K.P.RoY CKOWDFKTRY The Tata Iron & Steel Co Ltd, Jamshedpur Indian Non-Ferrous Metals Manufacturers’ Associa-
Snnr R. K. SRIVASTAVA, tion, Calcutta
Deputy Director ( Strut L Met j Director General, IS1 ( Ex-o&o Member j
Suretary SHRI SAXT SIXGH
Senior Technical Assistant ( Strut Br Met ), IS1
( Continued on page 2 )
INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC
NEW DELHI 110002
Conmm- Reprcsenring
DE~~CTY DIRECTOR ( him-2) Ministry of Railways RDSO, &Wf’TARAN.TA~
Burn & Co Lid, Howrah The Britannia Engineering Co Ltd, Titaghur Indian Iron & Steel Ltd, Kulti Hindustan Motors Ltd, District Hooghly
ISi4843-1968
Panel for Code for Designation of Ferrous Castings, SMDC 1 : P11
hhbm
SHRI S. K. DAY REPREBENTATIVE REPRESENTATIVE Sarrr N. K. Snvar.~
2
hdian Standard CODE FOR DESIGNATION
FERROUS CASTINGS
IS i 4343 - 1968
OF
0. FOREWORD
0.1 This Indian Standard was adopted by the Indian Standards Institution on 8 October 1968, after the draft finalized by the Metal Standards Sectional Committee had been approved by the Structural and Metals Division Council.
0.2 A code for designation of ferrous castings will be an important step towards identification, uniform marking of products and drawings. Such a standard designation would greatly help the manufacturers and the users of the products concerned.
0.3 This standard has been co-ordinated with the following codes for designation, so that certain measure of uniformity is achieved in the designations:
*IS : 1762-196 1 Code for designation of steel
+1 S : 2084- 1962 Code for designation of pig iron
IS : 2085-1962 Code for designation of ferro-alloys
1. SCOPE
1.1 This standard lays down the principles for code designation of ferrous castings.
2. GENERAL
2.1 Ferrous castings shall be designated by a group of symbols indicating the important characteristics in the followmg order:
a) Type of castings, and
b) Mechanical properties or chemical composition.
*Since revised. 3 -- 3
3. SYMBOLS FOR TYPE OF CASTINt3S
3.1 Various castings shall have code.d&gnations as given below:
4 W
, Cl d) e> f 1 g> h) 3
‘9
Ferrous Castings
Grey iron
Mdtabk iron c
1) Black-heart
2) Pearlitic
3) White-heart
Spheroidal or nodular graphite iron
Austenitic flake graphite iron
Austenitic spheroidal or nodular graphite iron
Abrasion resistant iron
Steel castings
I-Ieat-resistant steel castings
Corrosion-resistant steel castings
Lhignation
FG
BM
PM
WM
SG
AFG
ASG
AaR
CS
CSH
CSC
4. SYMBOL FOR MECHANICAL PROPERTIES
4.1 The tensile strength in kgf/mms to follow the group symbol shall be the minimum for the 30&m section in case of grey iron castings and the minimum for the heaviest section in casr of various other castings. Where the minimum tensile strength requiremerlt does not vary with the sectional thickness within the same grade, the group symbol shall be followed by the minimum tensile strength indicated for the grade. In the case of spheroidal or nodular graphite iron castings, the tensile strength shall be followed by the minimum elongation on gauge length 5*651/&j.
5. SYMBOL FOR CHEMICAL COMPOSITION
5.1 In the case of grey iron castings where chemical composition is more
11 important than the tensile properties and for alloy iron and alloy steel
;’ castings, the group symbol shall be followed by the chemical symbol in accordance with IS : 1762-1961*.
*Code for designation of ~tccl. _( Since revised ) .
4
6. EXAMPLES
ISr4w3-1968
6.1 In order to illustrate, examples of code designations in accordance with this standard are given below:
a) Grey Iron Castings
1) General Engine&g Castings
SECTIONAL THICKNESS Dxy..;o?.s~ TENSILE OF CASTINGS STRENGTH
mm mm kgf@m’ Mire
DESIGNATION
4upto 8 13 19 Over8upto15 20 17 Over 15upto30 z! 15 Over 30 to 50 up 13
15 up to ,30 over 30 up to 50
30 45
40 37
1
FG 15
FG40.
2) S$ccial Grq Iron Castings Where Chemical Comfio$ion L More Important, Such as Ingot Mould Castings
CHEMICAL COMPOS~ION DEG~T;NATKON *
c -- Element Percent
Carbon equivalent 4.0 to 5-l 7
Tdt: 2::: $1: ) , 3.5 I Silicon l-20 to 1.80 1 Manganese O-60 to o-90 ) FG35Si 15 Chromium, Max o-15 , : Copper, MUX 0.10 Sulphur, Max o-080 Phosphorus, Max o-400 J
. b) Malleable Iron Castings
1) Bluck-Heart Malleable Iron Castings
SECTIONAL THICIC- DIAMETEROF TEST TENSILE DESIGNATION NESS OF CASTINGS BARASCAST STRENGTH
mm mm kgf:mm* Min
All sizes :: :;
BM 35 All sizes BM 32 All sizes 15 30 .- BM 30
5
IS:484301968
2) Pearlitic MalLsab2e Iron Castings
SECTIONAL THICKNESS DIAMETER OF TEST OF CASTINGS BAR AS CAST
mm mm
_ A!1 sizes 15
All sizes 15
All sizes 15
All sizes 15
All sizes 15 _
3) Whit++Heart Malleable Iron Castings
SECTIONAL THICKNESS DIAMETER OF TEST _ O.F&9I-IIVGS BAR AS C&T
mm mm
8 and under Over8up@ 13 Over 13
8 and under Over8upto 13 Over 13
c) Spheroida or
‘I&s;L~ &&.NGTH kgf’/mma
Min
80
70
60
50
42
38
1; 15
9 * 12 15
TENSILE STRENGTH kgfjmm*
Min
DESIGNATION
70 PM 70
65 PM 65
55 PM 55
50 PM 50
45 PM 45
TENSILE STRENGTH -
, kgt;imm* iMi72
DESIGNATION
36-l
40 F 42J 28 32 35
WM 42
WM 35
Nodular Graphite Iron Castings
ELONGATION, PERCENT
Min
on Gauge Length 10 = 5d
2
2
2
7
12
17
6
DESIGNATION
SG 8012
SG 7012
SG 6012
SG 50/7
SG 42/12
SO 38/17
IS:4843-1968
d) Austenitic Flake Graphite iron Castings
th3UZCAL thWMZ’ION DESIGNATION ~_--_-~--_-----L~
Elemrnt Pt??iZYlt
Carbon, MUX 3.00 Silicon 1.00 to 2.80 : Manganese 190 to 1.50 Nickel 13.5 to 17.5 I AFG Ni 16 Cu 7 Cr 2
Ccwer 5-50 to 7.50 Chromium 130 to 2.50 1
J
e) Austenitic Spheroidal or Nodular Graphite Iron Castings
CHEMICAL &aPOSITION DESIGNATION --- L \
Ekmcnt Percent
carbon, MUX 390 Silicon 190 to 2.80 1 Manganese Nickel Chromium Phosphorus, Max
.
O-70 to l-50 18-O to 22-O ASG Ni 20 Cr 2
1.00 to 2.50 0.080
f) Ala-don-lt~istaatxrollcartinga
CHEMK4L(hlPOSlTION DESIONATI~N v
Ekmeni Percent ’
Total carbon Graphite carbon, Max Ev6 ’ * Silicon @3 to 0.8 Manganese 0.3 to 0.8 Nickel 3-3 to 5.0 i ABR33Ni4Cr2 Chromium 1+ ~2-5 Molybdenum, Max @75 I Sulphur, Max 015 Phosphorus, Max 090
EC> -elc-wP
1
1) Unallopd (General Engineering) Steel Caslings TENSILE STRENGTH DJSIGXUTIOXU
kgf/mms Min 125 105 zz:
ISr4843-1968
E cs cs 85 71 55 cs 55 47 cs 47 41 cs 41
2) Unaltoyed Special ( High Magnetic Permeability ) Castings
TENSILE STRENGTH DESIGNATION kgf/mm8 35 to 44 CSM 35 41 to 50 CSM 41
3) Alloy Steel Castings
CHEMICAL COMPOSM’ION r --
Element Percent
Carbon 0.45 to 0.551 Silicon 0.10 to o-35 1 Manganese 0.50 to 0.80 ) Chromium 090 to l-20 1 Vanadium, Min 0.15 J
h) Heat-Resistant Steel Castings
CHEMICAL COMPOSITION r --h--_------\
Element Percent
Carbon 1.20 to.1*40] Silicon, Max 290 Manganese, Max 1.00 I Chromium 26.0 to 30.0 k Nickel 4.0 to 7.0 / Sulphur, Max 0.050 Phosphorus, Max 0.050 i
j) Corrosion-Resistant Steel Castings
CHEMICAL COMPOSITION f Y-h-- -I
Element Percent
Carbon Silicon, Max Manganese, Max Nickel, Max Chromium Molybdenum, Max
8
DESIGNATION
CS 50 Cr 1 V 20 -
DESIGNATION
CSH 130Ni6Cr28
DESIGNATION
CSC 16 Cr 13