Zinc Flake

What is GEOMET?

NOF METAL COATINGS has an innovative proposition: Environmental awareness has in recent years encompassed the globe, and increasingly stringent laws are being enacted to regulate toxic substances. Among others, the use of hexavalent chromium –a substance heretofore widely used as an effective coating for the prevention of rust—is likely to be adopted in the U.S. and Europe. Responding to this trend, NOF METAL Coatings, in collaboration with NOF METAL COATINGS GROUP, has developed GEOMET based on DACROTIZED, the rust-preventive coating technology that has been perfected through 30 years of real0world application. The new, chromium-free coating technology is the fruit of many years collaboration among these three companies.

GEOMET was born as a chromium-free coating technology. Now, as a result of continuing improvement, we are offering the latest version, GEOMET 720.

GEOMET coating film has a silver metallic look. Layers of metal flakes are connected with one another through the use of a special inorganic binder.

Because the film is extremely thin-only about 8um-it won’t negatively affect the optimal fit between bolts and nuts.

2C2B is the standard manufacturing process.

Geomet^® 720

GEOMET® 720 is applied to protect fasteners and many types of metallic parts from corrosion and is used in many industries. It can be combined with PLUS® topcoats to provide a very broad range of friction coefficients. It is the reference zinc flake coating in Asia.

Thin dry-film, non-electrolytic

Water-based chemistry

Passivated zinc and aluminum flakes in a binder, patented chemistry

Metallic silver appearance

Characteristics and performances

The coefficient of friction can be adjusted to targeted values ranging from 0.06 to 0.20 (ISO 16047) with NOF METAL COATINGS GROUP's selected topcoats

• Salt Spray Test (ISO 9227)
• 1000 hrs without red rust

No hydrogen embrittlement

Excellent assembly and multi-tightening behavior (with lubricated topcoat)

Performance maintained at elevated temperatures (up to 300^°C)

Paintable coating

Electrical conductivity for most application processes

Bimetallic compatibility with aluminum

Geomet^® 321

GEOMET® 321 is applied to protect fasteners and many type of metallic parts from corrosion and is used in many industries. It can be combined with PLUS®, DACROLUB® or GEOKOTE® topcoats to provide a very broad range of friction coefficients. It is the most widely used product in zinc flake technology.

Thin dry-film, non-electrolytic

• Salt Spray Test (ISO 9227)
• 240 hours without white rust
• 720 hours without red rust

Water-based chemistry

Passivated zinc and aluminium flakes in a binder, patented chemistry

Chrome free alternative to DACROMET^® 320

Metallic silver appearance

Geomet^® 360

GEOMET® 360 has been specially formulated to protect brake discs against corrosion. The brake disc surface can be totally treated with a coating at a thin layer, still providing high performances without any influence on braking characteristics. GEOMET® 360 is obtained from a water-based dispersion of zinc and aluminium flakes. The color of the coating is silver Characteristics and performance*

Cosmetic protection: the brake discs can be seen through the alloy wheels. The aluminium silver color of GEOMET® 360 integrates perfectly with the style of alloy wheels

Braking behavior: the low thickness of the coating on braking surfaces does not damage the quality of braking during the vehicle first use and enables a temporary protection of brake discs surfaces

Temperature resistance (400°C): it enables to keep an excellent corrosion resistance on vehicles

Protection inside the vents: no oxidation inside the fins – better thermal exchange while braking

Temperature resistance (400°C): it enables to keep an excellent corrosion resistance on vehicles

Protection inside the vents: no oxidation inside the fins – better thermal exchange while braking

For after-market, GEOMET^® enables to assemble the brake discs on vehicles without pre-degreasing (dry protection)

The stronger corrosion protection of GEOMET^® on the hub mounting surface makes brake disc dismounting easier

Geomet^® 500

GEOMET® 500 is applied to fasteners and many type of metallic parts to protect from corrosion, and it is used in many industries

Thin dry-film, non-electrolytic, self-lubricated

Water-based chemistry

Chrome free alternative to DACROMET^® 500

Metallic silver appareance

Characteristics and performance

Coefficient of friction: 0,15 ± 0,03 (ISO 16047)

• Salt Spray Test (ISO 9227)
• 240 hours without white rust
• 720 hours without red rust

No hydrogen embrittlement

Excellent assembly and multi-tightening behavior

Good mechanical damage (test method D24 1312, USCAR 32) and chemical (test VDA 621-412) resistance

Performance maintained at elevated temperatures (up to 300°C)

Paintable coating

Electrical conductivity for most application

Bimetallic compatibility with aluminum

Dacromet

dacromet^® 320

DACROMET® 320 is a non-electrolytic water-based thin-film coating for the corrosion protection of articles made from steel, cast iron, or other iron metals. The coating contains zinc and aluminium flakes in a chromium binder. The coating is metallic silver in appearance. DACROTIZING is the process whereby the aqueous dispersion is applied by cold immersion or spray and is therefore free of any risk of hydrogen embrittlement. The coating thus produced is passivated throughout the film and provides high performance corrosion protection.

CHARACTERISTICS:

The corrosion resistance of DACROMET® 320 depends upon the thickness of the coating and is due to the combination of several mechanisms:

A barrier effect due to the tile-like structure of the film.

• Salt Spray Test (ISO 9227)
• 240 hours without white rust
• 600 hours without red rust

Controlled sacrificial protection of the zinc in relation to the metal substrate.

The film passivation which reduces the speed at which the zinc and aluminium are consumed.

dacromet^® 500

DACROMET® 500 is a non-electrolytic water-based thin-film coating for the corrosion protection of articles made from steel, cast iron, or other iron metals. The coating contains zinc and aluminium flakes in a chromium binder. The coating is metallic silver in appearance. DACROTIZING is the process whereby the aqueous dispersion is applied by cold immersion or spray and is therefore free of any risk of hydrogen embrittlement. The coating thus produced is passivated throughout the film and provides high performance corrosion protection.

CHARACTERISTICS:

The corrosion resistance of DACROMET® 500 depends upon the thickness of the coating and is due to the combination of several mechanisms:

A barrier effect due to the tile-like structure of the film.

• Salt Spray Test (ISO 9227)
• 240 hours without white rust
• 600 hours without red rust

Controlled sacrificial protection of the zinc in relation to the metal substrate.

The film passivation which reduces the speed at which the zinc and aluminium are consumed.

Provides a controlled coefficient of friction on nuts and screws i.e. u average between 0.12- 0.18.

PLUS SERIES

Top coats add new characteristic to GEOMET coatings and improve various coating performance

Realization of consistent friction coefficient. Choose an applicable specification from a qide selection in order to achieve a stable friction coefficient for GEOMET coated.

Improve corrosion resistance of GEOMET Applying GEOMET PLUS series over GEOMET coated will further improve the corrosion and chemical resistance .( Salt Spray Test according to ISO 9227 / ASTM B117 GEOMET^® 720 + TOP COAT > 1500 hours without red rust)

For beauty of appearance (Black color coating) Meet customer's requirement of black color surface

Improved resistance to galvanic corrosion The GEOMET PLUS series has been used by auto manufacturers as a means of preventing galvanic corrosion on the GEOMET coated metal fittings of robber hoses, such as hose clamps.

The water-based, chromium free coating technology does not cause pollution.

dacromet^® 10

DACROLUB® 10 is an organic topcoat made from water-based chemicals. This topcoat can be applied to GEOMET® and DACROMET® coatings, whereby the friction coefficient of threaded parts can be reduced and controlled.

Characteristics and performance

Dry lubrication film

Friction coefficient: 0,08 - 0,14 on parts with GEOMET^® or DACROMET^® measured according to EN ISO 16047

DACROLUB^® 10 gives freedom from possible stick-slip problems when tightening (VDA 235-203)

No induced hydrogen embrittlement

Appearance: clear • Salt Spray Test according to ISO 9227 : No effect on the corrosion resistance of the GEOMET^® or DACROMET^® base-coat

The combination GEOMET^® / DACROLUB^® 10 or DACROMET^® / DACROLUB^® 10 is particularly suited to fasteners since it provides them with optimal protection and assembly properties

Being easy to apply, the DACROLUB^® 10 can be colored to be used for part identification

GEOKOTE^®

Resistance to chemicals and abrasion, improved control of the friction coefficients are requirements increasingly demanded by markets. The combination of the GEOMET^® coating with the GEOKOTE^® topcoats can respond to new expectations in many industrial sectors.