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IS 15620 (2005): Plain bearings - multilayer materials for
thin-walled plain bearings [PGD 13: Bearing]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
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PLAIN BEARINGS — MULTILAYER MATERIALS
FOR THIN-WALLED PLAIN BEARINGS
Ics 21.100.10
.!, ,
@BIS 2005
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DE LHI 110002
November 2005
Price Group 4
Bearings Sectional Committee, PG 13
NATIONAL FOREWORD
This Indian Standard which is identical with ISO 4383:2000 ‘Plain bearings — Multitayer materials for
thin-walled plain bearings’ issued bythe International Organization for Standardization (ISO) was adopted
by the Bureau of Indian Standards on the recommendations of the Bearings Sectional Committee and
approval of the Medical Instruments, General and Production Engineering Division Council.
The text of the ISO Standard has been approved as suitable for publication as an hdian Standard
without deviations. Certain conventions are, however, not identical to those used in Indian Standards.
Attention is particularly drawn to the following:
a) Wherever the words ‘International Standard’ appear referring to this standard, they should
be read as ‘Indian Standard’.
b) Comma (,) has been used as adecimal marker while in Indian Standards, the current practice
is to use a point (.) as the decimal marker.
In this adopted standard, reference appears to the following International Standard for which Indian
Standard also exists. The corresponding Indian Standard which isto be substituted in its plate is listed
below along with its degree of equivalence for the edition indicated:
International Standard Corresponding Indian Standard Degree of
Equivalence
ISO 6691 :2000 Thermoplastic IS 15621 :2005 Thermoplastic polymers Identical
polymers for plain bearings — for plain bearings — Classification and
...,,,
Classification and designation designation
The technical committee responsible for the preparation of this standard has reviewed the provisions of
the following International Standards and has decided that they are acceptable for use in conjunction
with this shndard:
International Standard Title
tSO 4381 :20001) Plain bearings — Lead and tin casting alloys for multilayer plain bearings
ISO 4382-1 :1991 Plain bearings — Copper alloys — Part 1 :Cast copper alloys for solid and
multilayer thick-walled plain bearings
1,Under adoption.
IS 15620:.2005
ISO 4383:2000
Indian Standard
PLAIN BEARINGS — MULTILAYER MATERIALS
FOR THIN-WALLED PLAIN BEARINGS
1 Scope
This International Standard specifies requirements for multilayer materials for the manufacture of thin-walled plain
bearings (half bearings, bushes, thrust washers). The multilayer material consists of a steel backing, the bearing
layer (cast, sintered, rollbonded) and possibly an electrodeposited overlay.
NOTE Environmental concerns will,inthefuture, restrictthe use ofsome matetials such as lead.
2 Normative references
The following normative documents contain provisions which, through reference inthis text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers ofcurrently valid International Standards.
.,,$
ISO 4381, Plain bearings — Lead and tincasting alloys formultilayer plain bearings.
ISO 4382-1, Plain bearings — Copper alloys — Pati 1:Cast copper alloys.forsolid and multilayer thick-walled plain
bearings.
ISO 6691, Thermoplastic polymers for plain.bearings — Classification and designation.
3 Requirements
3.1 Chemical composition
The chemical composition shall be within the limits specified in Tables 1 to 5, where single figures denote
maximum values.
3.2 Steel bacMngs
The chemical composition of the steel for backings shall be the subject of agreement between manufacturer and
purchaser. Ingeneral, lowcarbon steel willbe used.
For the bronze/polymer composite materials listed inTable 4, copper-coated steel maybe used.
IS 15620:2005
ISO 4383:2000
3.3 Bearing layers
Bearing metals based on lead and tin shall be inaccordance withTable 1.
Bearing meta~ based on copper shall be inaccordance withTable 2.
Bearing metals based onaluminium shall be inaccordance with-Table 3.
Bearing layers based on sintered porous bronze and polymers shall be inaccordance with Table 4.
NOTE There is now a new class ofaluminium-based materials containing both aluminium and silken or manganese as well
as a “SOWmaterial such sslead ortin.Detailed information isavailable from individual manufacturers.
3.4 Overlays
Overlays in accordance with Table 5 may be applied for bearing metal layers as indicated in Table A.2. The
thickness of the overlay and any additional layers between the bearing metal layer and the overlay shall be the
subject of agreement between the manufacturer and purchaser.
3.5 Propetiies and selection of materials
Guidance on bearing metal hardness instripform and uses ofbearing metals isgiven inannex A.
4 Designation
EMMPLE
A multilayer material consisting of a steel backing, the bearing metal CuPb24Sn as cast (G) and the overlay PbSnl OCU2 is
designated as follows:
Bearing metal ISO 4383- G-CuPb24Sn - PbSnl OCU2
Tabfs 1— Lead and tin alloys (see ISO 4381 )
Chemical composition, % (din)
Chemical element
PbSb10Sn6 PbSbl 5SnAs PbSbl 5Sn10 SnSb8Cu4
Pb Remainder Remainder Remainder 0,35
Sb 9toll 13,5 to 15,5 14to16 7t08
Sn 5t07 0,9 to 1,7 9toll Remainder
“Cu 0,7 0,7 0,7 3t04
As 0,25 0,8 to 1,2 0,6 0,1
Bi 0,1 0,1 0,1 0,08
Zn 0,01 0,01 0,01 0,01
Al 0,01 0,01 0,01 0,01
Fe 0,1 0,1 0,1 0,1
Total others 0,2 0,2 0,2 0,2
2
IS 15620:2005
ISO 4383: 2QO0
Table 2 — Copper alloys
Chemical composition, % (tire)
Chemical CuPblOSn10 a CuPb17Sn5 I CuPb24Sn4 “CuPb24Sn CuPb30
element
G -cast G -cast G -cast G -cast P-sintered
P-sintered P-sintered P-sintered
Cu Remainder Remainder Remainder Remainder Remainder
Pb 9toll 14t020 19t027 19t027 26 to33
Sn 9toll 4t06 3to4,5 0,6 to2 0,5
Zn 0,5 0,5 0,5 0,5 0,5
P 0,1 0,1 0,1 0,1 0,1
Fe 0,7 0,7 0,7 0,7 0,7
Ni 0,5 0,5 0,5 0,5 0,5
Sb 0,5 0,5 0,5 0,5 0,5
Total others 0,5 0,5 0,5 0,5 0,5
ame chemicalcompositionofthisalloydiffersfromthatofsotidandmultilayerthick+dled plainbarings (seeISO~82-1 ).
Table 3 — Aluminium alloys
Chemical composition, % (tire)
Chemical element
NSn20Cu AlSn6Cu AISil 1CU AlZn5Sil ,5CU1Pbl,Mg
Al Remainder Remainder Remainder Remainder
Cu 0,7 to 1,3 0,7 to 1,3 0,7 to 1,3 0,8 to 1,2
Sn 16,5 to22,5 5,5 to7 0,2 0,2
Ni 0,1 1,3 0,1 0,2
Si 0,7 a o,7 a loto12 lto2
Fe o,7 a 0,7 a 0,3 0,6
Mn o,7 a 0,7 a 0,1 0,3
Ti 0,2 0,2 0,1 .0,2
Pb 0,7 to 1,3
Zn 4,4 to5,5
Mg 0,6
Total others 0,5 0,5 0,3 0,4
aTotal Si+Fe +Mncontent shall notexceed 1O/..
3
IS 15620:2005
ISO 4383:2000
Table 4— Sintered bronze with polymer running sutiace
Chemical composition, Y. (rdm)
Chemical element
CuSnl O CuPblOSn10
Cu Remainder Remainder
Pb 9to 12
Sn 9to12 9to12
P. 0,3 0,3
Total othem 0,5 0,5
Running surface and polymer
impregnated with fillers against PTFE POM PVDF PTFE PVDF
frictionandwear(We Iso6691)
Poroussinteredbronze Porosity-20Y.to45%(V/~
Table 5— Overlays
Chemical composition, Y. (din)
Chemical element
PbSn10Cu2. -PbSn10 Pbln7
‘~
Pb Remainder Remainder Remainder
Sn 8to-12 8to 12 !,,.
Cu lto3
In 5tolo
Total others 0,5 0,5 I 0,5 I
I
4
IS 15620:2005
ISO 4383:2000
Annex A
(informative)
Guidance on properties and selection of materials
See Tables A.1 and A.2.
Table A.1 — Bearing metal hardness instrip form
Rolled and
Bearing alloy As cast Sintered S~cial treatments
annealed
PbSbl OSn6 19 HVto23HV 15 HVto19HV
PbSbl 5SnAs 16 HVto20HV
PbSbl 5Snl O 18 HVto23HV
SnSb8Cu4 17 HVto24HV
CuPbl OSnl O 70 HB to 130 HB 60 HB to90 HB 60 HB to 140 HB
CuPb17Sn5 60 HB to95 HB
CuPb24Sn4 60 HB to90 HB 45 HB to70 HB 45 HB to 120 HB
CuPb24Sn 55 HB to80 HB 40 HB to60 HB 40 HBtol10HB
CuPb30 30 HB to45 HB
AlSn20Cu 30 HB to40 HB 45 HB to60 HB
AlSn6Cu 35 HB to45 HB
AISil 1CU 45 HB to60 HB
AlZn5Sil ,5CU1 Pbl Mg 45 HB to70 HB 70 HB to 100 HB
NOTE Hardness valuas mav be increased bv.Hn-rnlllno. fn.f. %houldbecarri~ outinaccordance tith ISO 4*I.
5
