1. PACIFIC METAL POWDERS CO., LTD.
1249/66, 8th
FLOOR, GEMS TOWER, CHAROEN KRUNG ROAD, BANGRAK, BANGKOK – 10500. THAILAND
TEL: +66-2-2674745 / 46 FAX: +66-2-2676582. Email: info@pacific-group.co www.pacific-group.co
Manufacturer of a complete range of high quality Gold Bronze, Copper and Aluminium flake powders and pastes.
ATOMISE POWDERS FOR FRICTION LININGS
INTRODUCTION
Pacific Metal Powders produces a range of non-ferrous Metal Atomise Powders for
use in Friction Lining materials.
All products are produced from pure raw materials with known chemical composition
to ensure that the final product has the minimal Heavy Metal Content and low
environmental impact when used in the final Friction Lining.
Pacific Metal Powders gives technical support to customers and has a policy of
modifying and developing products to meet specific application demands. Both new
production techniques and new products are actively being developed in the
Company’s R & D projects.
PRODUCTS
Pacific Metal Powders produces Spherical, Irregular and Needle Atomise metal
powders.
Metals and alloys range from low melt point materials such as Zinc to higher melt
point materials such as Copper and its alloys.
Spherical atomise particles of Copper and Bronze (Cu/Sn alloy) are produced.
Irregular atomise particles of Brass are produced.
Needle atomise particles of Brass, Bronze, Aluminium and Zinc are produced.
CHEMICAL PURITY
All products are made to a low Heavy Metal Content (HMC) specification. The
actual HMC content depends upon the metal alloy but TOTAL content will be below
70 ppm (0.007%).
Typical analysis will give the following contents:
Lead (Pb) max 20-50 ppm
Cadmium max 3-10 ppm
Antimony max 1- 3 ppm

2. PACIFIC METAL POWDERS CO., LTD.
1249/66, 8th
FLOOR, GEMS TOWER, CHAROEN KRUNG ROAD, BANGRAK, BANGKOK – 10500. THAILAND
TEL: +66-2-2674745 / 46 FAX: +66-2-2676582. Email: info@pacific-group.co www.pacific-group.co
Manufacturer of a complete range of high quality Gold Bronze, Copper and Aluminium flake powders and pastes.
NEEDLE ATOMISE
1. BACKGROUND
Brass Chipping and Gunmetal Chippings (Cu/Sn/Pb Bronze alloy) have
commonly been used in many Friction Lining Materials but are known to contain
between 2% to 6% Lead (Pb). This causes environmental concern when
incorporated into the final Friction Lining product.
Other types of metal powders such as Atomise and Granular products are
produced with low Heavy Metal Contents but are always of Spherical or Irregular
particle shape unlike Brass and Gunmetal Chippings which are Elongated shaped
particles.
Needle atomise as produced by Pacific Metal Powders has been specially
developed to combine the low Heavy Metal Content of normal atomise powder
with the elongated particle shape of Chippings.
2. ADVANTAGES OF NEEDLE ATOMISE
A) ENVIRONMENTAL FRIENDLY
Needle atomise is produced direct from the molten metal; careful selection of raw
material and control of the melting process ensures that the products have the
minimal Heavy Metal Content.
B) CONTAMINANT FREE
Unlike Brass and Gunmetal Chippings which are recycled materials from
machining operations, Needle atomise is 100% oil and grease free.
C) FORMULATION
Because the particle shape is similar to Chippings, Needle atomise can be used as
a substitute without major changes to the formulation. Elongated particles also
give much better dispersion within the formulae resulting in superior processing.
D) STABILITY
Because of the elongated particle shape the metal powders have more adhesion
and better long term stability in the brake system than spherical or irregular
particles. The better dispersion of the particles within the formulae also enhances
long term brake performance.

3. PACIFIC METAL POWDERS CO., LTD.
1249/66, 8th
FLOOR, GEMS TOWER, CHAROEN KRUNG ROAD, BANGRAK, BANGKOK – 10500. THAILAND
TEL: +66-2-2674745 / 46 FAX: +66-2-2676582. Email: info@pacific-group.co www.pacific-group.co
Manufacturer of a complete range of high quality Gold Bronze, Copper and Aluminium flake powders and pastes.
2. PARTICLES SIZE DISTRIBUTION
Needle Atomise is produced is particle sizes ranging from 60 micron up to 1000
micron.
Standard grades typically have a Size Distribution of 150 micron to 850 micron.
Fine grades typically have a Size Distribution of 60 micron to 630micron.
Pacific Metal Powders can make Particle Size Distributions to match customer
requirements.
Typical Size Analysis (Standard Grade)
MICRON SPECIFICATION TYPICAL
+850 5% max Trace
+425 20-50% 22%
+150 Balance 66%
-150 20% max 12%
Typical Size Analysis (Fine Grade)
MICRON SPECIFICATION TYPICAL
+630 5% max 3%
+350 0-25% 20%
+150 Balance 52%
-150 10-30% 25%
3 PRODUCTS
Pacific Metal Powders can produce Needle Atomise in the following metals and
alloys:
1. GILDING METAL 97Cu3Zn
2. BRASS 90Cu10Zn, 80Cu20Zn, 70Cu30Zn, 60Cu40Zn
3. BRONZE CuZnSn alloys (e.g. 80Cu15Zn5Sn)
4. ALUMINIUM Minimum 96%
5. ZINC Minimum 99%

4. PACIFIC METAL POWDERS CO., LTD.
1249/66, 8th
FLOOR, GEMS TOWER, CHAROEN KRUNG ROAD, BANGRAK, BANGKOK – 10500. THAILAND
TEL: +66-2-2674745 / 46 FAX: +66-2-2676582. Email: info@pacific-group.co www.pacific-group.co
Manufacturer of a complete range of high quality Gold Bronze, Copper and Aluminium flake powders and pastes.
IRREGULAR AND SPHERICAL ATOMISE
1. PRODUCTS
Spherical particles of Copper and Bronze atomise are produced.
Brass alloys are of irregular particle shape.
2. PARTICLE SIZE DISTRIBUTIONS
Particle sizes can be adjusted to meet a particular specification.
Standard grades are typically as follows:
MICRON SPECIFICATION
+250 Max 2%
+150 25 – 45%
+ 61 Balance
Pan 10 – 25%
3. PRODUCTS
3.1 COPPER 1005 Cu
3.2 BRASS 90Cu10Zn, 80Cu20Zn, 70Cu30Zn, 60Cu40Zn
3.3 BRONZE Cu Sn alloys
For More Information, please contact:
PACIFIC METAL POWDERS CO., LTD.
1249/66, 8th
FLOOR GEMS TOWER, CHAROEN KRUNG ROAD,
BANGRAK, BANGKOK – 10500. THAILAND
TEL: +66‐2‐2674745/46 FAX: +66‐2‐2676582. Email: info@pacific‐group.co
www.pacific‐group.co