Surface treatment

Surface treatment prevents or delays corrosion (rust). Here are three reasons how and why we use surface treatment.

  1. Surface creates coatings that protect against, or at least delay the corrosion process.
  2. Another reason is functional reasons. They want to achieve a surface that has good durability and low friction.
  3. The third is that the surface of the product will be aesthetically pleasing.


Below you will find all our surface treatments. 

Blue pacified zinc, YTB-CODE 57

Alternatively, with a sealer YTB CODE 58.
Blue pacified zinc are a galvanic plating of zinc on steel that is used predominantly at the surface of lock cases and hinges. The zinc layer goes through an after treatment with a passivering to improve the corrosion protection. Alternatively, a sealer is applied to improve the corrosion protection further. 

Film thickness: 12 microns 
Durability: Good durability 
Usage: Outdoor and indoor

Zinc-alloy, YTB-CODE 48

Zinc alloy is a galvanic plated zinc alloy layer with iron. The zinc-iron layer  goes trhough an after treatment with a blåpassivering and sealer to improve its corrosion protection. 

Film thickness: 12 microns 
Abrasion: Does not withstand heavy wear 
Usage: Outdoor and indoor 
Zinc Alloy provides an extremely good corrosion protection, about five-ten times higher than normal blåpassiverad zinc (ytb code 57).

Brass, YTB-CODE 21

Equally as ytb 20, but with the difference that the brass is brushed matte.

Brass, YTB-CODE 20 

Brass is an alloy of copper and zinc. When the brass oxidizes it changes its character and the surface changes in appearance. This process accelerates in coastal environments and the brass gets a more antique look. Brass fittings are polished to high gloss and then they are coated with a clear coat. Steel parts are plated with copper and nickel on the component and with a thin layer of brass plated nickel on top, finally the detail is painted with a clear coat. 

Film thickness: Base material: brass 
5-8 micron clearcoat 
Base material: Steel 
5-7 micron copper 
10 micron matt nickel 
10-20 micron bright nickel 
2-3 micron brass 
5-8 micron clearcoat 
Durability: The durability of the coating is limited 
Usage: Not suitable for outdoor use in coastal environments 
Allergy: Details made in brass meet the EU's directive on nickel regulation. Steel parts does not meed the EU's directive on nickel regulation.

Chrome, YTB-CODE 11

Polished chrome is a very durable surface suitable for both indoor and outdoor environments in  doors with high opening frequency. Galvanic plated nickel and chromium on brass or steel.

Film thicknessBase material: brass
10-20 microns nickel
0.3 micron chromium
Base material: Steel
5-7 micron copper
10 micron matt nickel
10-20 micron bright nickel
0.3 micron chromium
Durability: Excellent durability
Usage: Outdoor and indoor

Prion, YTB-CODE 2001

Prion ® is a nickel free coating adapted to people with contact allergy. Prion has a good durability and is suitable for both indoor and outdoor use in public and private environments. Galvanic plated alloy of copper, tin and zinc 

Film thickness: 60-10 microns 
Durability: Good durability 
Usage: Outdoor and indoor. 
Allergy: Meets nickel regulation in accordance with EU Directive 94/27/EC

Powder coating, YTB-CODE
63, 64, 65, 67, 77, 92

Powder coating is an organic coating layer. The layer consists of a mixture of epoxy and polyester. The powder is placed on the details electrostatically. After the application is melted, the powder  is hardened in an oven. To get a good corrosion protection, even if the coating layer is damaged, zinc  is always plated on all steel parts before painting. Powder coating is available in multiple colors. 

Film thickness: 60-100 microns 
Durability: Excellent durability 
Usage: Outdoor and indoor 
Allergy: Meet the EU Directive on nickel marketing

Zinc-alloy, YTB-CODES
51, 52, 53, 54, 55, 62


Ytb-code 51, 55, 62 = yellow layers 
Ytb code 52, 53, 54 = black layer 

Zinc alloy is a galvanic plated zinc alloy layer with iron. Zinc-alloy used preferably at the surface of the lock cases and hinges. The zinc-iron layer  is after treated with a passivation to improve its corrosion protection. 

Film thickness: 12 microns 
Abrasion: Does not withstand heavy wear 
Usage: Outdoor and indoor

Brown oxide, YTB-CODE 44 

Brown oxide is a decorative finish that after some use wear down, so its durability is limited. This gives the fittings a more antique look. 

Base material: Brass 
Brass surface is oxidized to a brownish black color in an oxidizing solution, then loose oxide is removed with a steel brush, then the details are painted with a clear coat. 
Film thickness: 3-4 microns oxide layer 
5-8 micron clearcoat 
Durability: The durability of the coating is limited 
Usage: Less suitable for outdoor use in coastal environments 
Base material: Steel 
Steel parts are first plated with a nickel coating then a copper layer. The copper layer is oxidized, bruched and painted the same way as above. 
Film thickness: 10-20 microns nickel 
5-8 micron copper 
3-4 micron layer of oxide 
5-8 micron clearcoat 
Durability: The durability of the coating is limited 
Usage: Not suitable for outdoor use

Matt chrome, YTB-CODE 13

Matt Chrome is a very durable surface suitable for both indoor and outdoor environments in doors with high opening frequency. Equally as polished chrome, except that the matte brushing occurs before plating.

Addion, YTB-CODE 2003

Addion ® is an antibacterial and nickel free finish that is suitable in environments where many people are in circulation and bacteria is easily spread. When bacteria is spread via the hands and the items taken in hand, is Addion-treated seizure a natural choice for reducing the risk of contamination. Galvanic plated alloy of copper, tin, zinc and silver.

Film thickness: 60-10 microns 
Durability: Good durability 
Usage: Outdoor and indoor. 
Has an antibacterial surface that eliminates bacteria on the surface. 
Allergy: Meets nickel regulation in accordance with EU Directive 94/27/EC. 
Antibacterial: Addion efficiently reduces bacteria and is tested to JIS 2801:2000.

Nickel, YTB-CODE 2002

Nickel has good resistance to wear and is therefore suitable in doors with high opening frequency. Nickel is allergenic and can cause problems for people with nickel allergy. Galvanic nickel plated on brass or steel.

Film thickness: 10-20 microns 
Durability: Excellent durability 
Usage: Steel parts less appropriate for outdoors 
Allergy: nickel can cause nickel allergy