ROSIN BASED CORED SOLDER WIRE FLUX
Properties of Multicore 309 solid flux for cored wires:
xRosin based
xFast soldering
xPale residues
xSolders difficult surfaces
xGood spread on nickel, stainless steel, chromel,monel,
constantin, etc.
xHeat stable – low fuming
xMild odour
PRODUCT RANGE
Multicore 309 cored wires are manufactured with a range of
flux contents. Although users will normally be using
products with a nominal flux content of 3%.
Multicore 309 cored wires are available in a variety of alloys
conforming to J-STD-006 and EN 29453 or alloys
conforming to similar national or international standards. For
details refer to document “Properties of Alloys used in Cored
Solder Wires ”. A wide range of wire diameters is available.
Alternative flux contents and alloys may be manufactured to
special order.
TECHNICAL SPECIFICATION
A full description of test methods and detailed test results are
available on request.
Alloys: The alloys used for Multicore flux cored solder wires
conform to the purity requirements of the common national
and international standards. A wide range of wire diameters
is available manufactured to close dimensional tolerances.
For details refer to document “Properties of Alloys used in
Cored Solder Wires ”.
Flux: Multicore 309 solid flux is based on a blend of novel
activators and resins. It has a mild characteristic odour and
leaves a clear pale residue.
TYPICAL FLUX PROPERTIES
Test 309
Acid value 200mg KOH/g
Halide content <1.0%
EN 29451-1
Classification 1.1.2
JSTD Classification ROM1
Technical Data Sheet
Multicore 309
May 2007
SPECIAL PROPERTIES
Surface Insulation Resistance: Multicore 309 flux passes
the J-STD-004 SIR test and other elements of J-STD-004 test
protocols associated with the flux classification ROM1.
Electromigration Test: Multicore 309 passes the Bellcore
GR-78-CORE Electromigration test.
RECOMMENDED OPERATING CONDITIONS
Soldering iron: Good results should be obtained using a
range of tip temperatures. However, the optimum tip
temperature and heat capacity required for a hand soldering
process is a function of both soldering iron design and the
nature of the task and care should be exercised to avoid
unnecessarily high tip temperatures for excessive times. A
high tip temperature will increase any tendency to flux
spitting and it may produce some residue darkening.
The soldering iron tip should be properly tinned and this may
be achieved using Multicore cored wire. Severely
contaminated soldering iron tips should first be cleaned and
pre-tinned using Multicore Tip Tinner/Cleaner, then wiped
on a clean, damp sponge before re-tinning with Multicore
cored wire.
Soldering process: Multicore cored wires contain a careful
balance of resins and activators to provide clear residues,
maximum activity and high residue reliability, without
cleaning in most situations. To achieve the best results from
Multicore solder wires, recommended working practices for
hand soldering should be observed as follows:
xApply the soldering iron tip to the work surface,
ensuring that it simultaneously contacts the base material
and the component termination to heat both surfaces
adequately. This process should only take a fraction of a
second.
xApply Multicore flux cored solder wire to a part of the
joint surface away from the soldering iron and allow to
flow sufficiently to form a sound joint fillet – this should
be virtually instantaneous. Do not apply excessive
solder or heat to the joint as this may result in dull, gritty
fillets and excessive or darkened flux residues.
xRemove solder wire from the work piece and then
remove the iron tip. The total process will be very rapid,
depending upon thermal mass, tip temperature and
configuration and the solderability of the surfaces to be
joined.
NOT FOR PRODUCT SPECIFICATIONS
THE TECHNICAL INFORMATION CONTAINED HEREIN IS INTENDED FOR REFERENCE ONLY. PLEASE CONTACT HENKEL
TECHNOLOGIES TECHNICAL SERVICE FOR ASSISTANCE AND RECOMMENDATIONS ON SPECIFICATIONS FOR THIS
PRODUCT.
Multicore flux cored solder wires provide fast soldering on
copper and brass surfaces as well as solder coated materials.
Activity of the halide activated versions on nickel is also
good depending on the state of oxidation of the nickel finish.
The good thermal stability of Multicore fluxes means they
are also well suited to soldering applications requiring high
melting temperature alloys.
Cleaning: Multicore 309 flux cored solder wires have been
formulated to leave pale flux residues and to resist spilling
and fuming.
Cleaning will not be required in most situations but if
necessary this is best achieved using Multicore MCF800
Cleaner (see separate technical data sheet). Other proprietary
solvent or semi-aqueous processes may be suitable.
Saponification may be viable but customers must ensure that
the desired level of cleanliness can be achieved by their
chosen system.
GENERAL INFORMATION
For safe handling information on this product, consult
the Material Safety Data Sheet, (MSDS).
Note
The data contained herein are furnished for information only and are
believed to be reliable. We cannot assume responsibility for the results
obtained by others over whose methods we have no control. It is the user's
responsibility to determine suitability for the user's purpose of any
production methods mentioned herein and to adopt such precautions as may
be advisable for the protection of property and of persons against any
hazards that may be involved in the handling and use thereof. In light of the
foregoing, Henkel Corporation specifically disclaims all warranties
expressed or implied, including warranties of merchantability or fitness
for a particular purpose, arising from sale or use of Henkel
Corporation’s products. Henkel Corporation specifically disclaims any
liability for consequential or incidental damages of any kind, including
lost profits. The discussion herein of various processes or compositions is
not to be interpreted as representation that they are free from domination of
patents owned by others or as a license under any Henkel Corporation
patents that may cover such processes or compositions. We recommend that
each prospective user test his proposed application before repetitive use,
using this data as a guide. This product may be covered by one or more
United States or foreign patents or patent applications.
Multicore 309, May 2007
Americas
Henkel Corporation
15350 Barranca Parkway
Irvine, CA 92618 U.S.A.
949.789.2500
Europe
Henkel Loctite Adhesives Ltd
Technologies House, Wood Lane End
Hemel Hempstead
Hertfordshire HP2 4RQ, United Kingdom
+44 (0) 1442 278 000
Asia
Henkel Loctite (China) Co. Ltd
No. 90 Zhujiang Road
Yantai Development Zone
Shandong, China 264006
+86 535 6399820
All trademarks, except where noted are the property of Henkel Corp.
