Basic Info.
Product Description
The price above is just the processing cost, and depends on different color and substrate.
Decorative coatings are widely applied in daily life. The coatings are used in product designs and architectural designs to simply value up appearance and environmental comfort.
Against common applied powder painting or lacquering PVD coatings have several advantages. PVD coatings make it possible to keep the metallic gloss while applying a variety of different colors. Thus PVD coated layer stacks are very thin in contrast to paintings and lacquering the usage of raw coating material is much less.
A special feature of PVD coatings is that the coatings are produced without any liquid chemicals such as dye solutions or electrolytes. The coating material is directly converted into a vapor phase in high vacuum before getting deposited onto the substrate. Thus PVD coating is a 100% green technology.
With our advanced PVD coating technology we provide large area decorative coatings on stainless steel strips.
We are providing a variety of different colors. All of our colors have a metallic look. Especially for the requirements in architectural design we can provide under-saturated colors of bronze, copper and gold tint but also tints of grey and even more. Our flexibility in color design allow our customers to impress with individual designs having a high-value appearance.
We furthermore provide decorative coatings which have excellent environmental stability.
| Product name | Decorative coatings on stainless steel strips | Decorative stainless steel |
| Substrate Specification | Material | stainless steel strip |
| Width[mm] | ≤ 1250 | |
| Standard thinkness[mm] | 0.2-0.7 | |
| Standard Alloy | non-magnetic austenitic stainless steel alloys such as: 201, 304, etc. | |
| Finishes | common finishes which are available on market such as: 2B, 2J, 2K, 2P, 2R | |
| Mechanical Property | Tensile strength [N/mm2] | 485...1275 |
| Yield strength[N/mm2] | 170-965 | |
| Elongation % | 8...70 | |
| Hardness(Rockwell)[HRB] | 70...100 | |
| Bending radius for forming: | ≥ 1.5 x strip thickness | |
| Payment Term | TT, LC, | |
| Packing | 1. Product surface attached with proctective film 2. plastic film sealed 3. Anti-collision foam 4. Drying agent 5. seaworthy exporting wooden case | |
| Delivery Time | Future goods:25-35 Work days, Ready Stock:7-10 days. | |
Frequently Asked Questions (FAQ) about decorative coating product:
1. What's the specialty of SMMT's decorative coating technology?
Our roll-2-roll metal strip coater is able to coat metals strips with 900mm…1250mm width and 0.2…0.7mm thickness and can be equipped with different material configurations.
With our advanced co-sputter process we are able do engineer new compound layers which gives us a higher degree of freedom in designing decorative coatings in contrast to other technologies.
Our productivity is ranging from 200m2/h to 750m2/h depending on the coated product.
2. What is SMMT's coating capability?
We coat our decorative coatings on coiled stainless steel strips having strip lengths from 250m to a few km.
Within the same coil we can adjust and coat several colors.
Typical adjustment lengths ranging from 50m to 200m. Thus with a 1000m long strip either sample coatings of 5 different colors is possible or 200m of adjustment and 800m of coated product.
After adjustment we can keep the color stable over a production period of several km.
3. What's SMMT's color range?
We are very flexible in colors, covering a huge color range. For each color tone we can do variations in nuances making a color for example slightly darker or brighter, shifting the color to more red or more yellow etc.
| Adjustable color rage in CIE L Ch/CIE Lab color space coordinates | |
| CIE L Ch/Lab brightnessL* | 30-75 |
| CIE L Ch color angle h* | 0º-360º |
| CIE L Ch color saturation C* | <30(L* 40...60) at L* values>60 and <40 the color saturation is reduced |
| CIE Lab color coordinates a* (green-->red axis) | -10...+20(L* 40...60) at L* values>60 and <40 the color range is reduced |
| CIE Lab color coordinates b* (blue-->yellow axis) | -20...+30(L* 40...60) at L* values>60 and <40 the color range is reduced |
Selected samples overview
Selected coils overview
Reproducibility examples overview
4. What stainless steel grades are recommended for your intended application?
Stainless steels are consisting of a huge variety of iron bases alloys with a variety of properties and applications.
Generally spoken, stainless steel alloys are defined by containing a minimum of 10.5% chromium. Chromium serves to build a natural surface passivation which works as barrier and make the stainless steel more resistant to corrosion attacks.
Other elements are added and the chromium content increased to further improve the corrosion resistance and heat-resisting properties, enhance mechanical properties and provide specific fabrication characteristics.
The following may help you to choose the suitable alloy from our standard selection.
a) General information to our stainless steel selection
- 201 sheets and coils
- 304 sheets and coils
- 316 sheets and coils
- 430 sheets and coils
Further stainless steel grades are available on request, but not further explained here.
201 grades sheets and coils:
201 grades are not standardized for sheets and coils. But there are several specific alloys such as 201L1, 201L4, 201LH, 201LJ and more available on the market.
The special feature of 201 grades is the substitution of nickel with manganese within the alloy which makes this grade cheaper to 304 and 316 grades, while it's still austenitic in character with mechanical properties similar or tougher to 304 and 316.
- Corrosion resistance:
201 grades have a high resistance to acid and alkali, but come with a somewhat lower pitting corrosion resistance to 430, 304 and 316. - Mechanical properties:
201 features high toughness and hardness, ranging from values similar about 304 and 316 to higher values. - Fabrication:
The aim of this grade is to feature similar properties to 304 and 316 while the price is lower. It's easily formed and machined. - Application:
The application ranges from decorative tubes, tensile products and covers and watch cases. It's frequently requested for indoor architecture applications.
304 grades sheets and coils:
Grade 304 is the most commonly used stainless steel. It is an austenitic, corrosion resistant steel with excellent strength, toughness, fabrication characteristics and weldability.
- Corrosion resistance:
Grade 304 has excellent corrosion resistance. It gives good service in atmospheric conditions, resisting most environments except for marine conditions, or where industrial pollution is heavy.
304 grade steel may face stress corrosion under certain conditions. - Mechanical properties:
304 features high toughness and hardness. - Fabrication:
Grade 304 is readily workable by the standard methods of sheet metal working, with the exception that it cannot be oxygen cut. Plasma cutting is normal.
It is relatively easy to machine and has excellent weldability. - Application:
Typical applications are transport and storage equipment, kitchen furniture, equipment and appliances, architectural panelling, railings and trims.It's possible to use 304 grades outdoors in mild climate areas which are located away from shores and factory sides.
316 grades sheets and coils:
Grade 316 is an improved version of 304. The addition of molybdenum and a slightly higher nickel content gives this grade a much increased corrosion resistance in many aggressive environments.
- Corrosion resistance:
Grade 316 has excellent corrosion resistance. It gives good service in atmospheric conditions, resisting most environments. It is often used in marine conditions, or where industrial pollution is heavy.
Similar to 304, 316 grade steel may face stress corrosion under certain conditions. - Mechanical properties:
316 features high toughness and hardness. - Fabrication:
Grade 316 is readily workable by the standard methods of sheet metal working, with the exception that it cannot be oxygen cut. Plasma cutting is normal.
It is relatively easy to machine and has excellent weldability. - Application:Typical applications are food processing equipment, laboratory equipment, architectural panelling, railings and trims, boat fittings and chemical containers.
It's possible to use 316 grades outdoors in mild climate areas as well in harsh climate areas such as shores and factory sides.
430 grades sheets and coils:
Ferritic 430 grade is cheaper than any of the 300 series steels while it has good corrosion resistant, has resistance to heat and oxidation and is not susceptible to stress corrosion cracking.
Corrosion resistance:
Grade 430 has good corrosion resistance in oxidizing acid solutions such as nitric acid. The resistance to pitting and crevice corrosion is a little lower than that of Grade 304. Thus 430 grade steels serve good in mild environments.
Grade 430 is resistant to stress corrosion cracking and may be used where grade 304 might fail in this mode.- Mechanical properties:
Compared to 201, 304 and 316 grades 430 has a lower toughness and hardness, it has lower work hardening which enables easy bending and forming. - Fabrication:
430 is readily workable by the standard methods of sheet metal working, with the exception that it cannot be oxygen cut. Plasma cutting is normal.
Grade 430 is slightly easier than the austenitic grade 304 to machine, but in contrast to 304 and 316 it has limitations in welding.
- Application:
430 is often used in interior appliances, including washing machine drums, kitchen sinks, and indoor panels such as refrigerator doors but also used in automotive.
As it is liable to brittle fracture at sub-zero temperatures it is not suitable in cryogenic applications.
b) Chemical composition data
Table 1: Chemical Composition of some standard alloys
Generally a higher chromium (Cr) content and addition of molybdenum (Mo) and nitrogen (N) will lead to a higher resistance against general corrosion and pitting corrosion.
PREN = %Cr + 3.3 x %Mo + 16 x %N
The PREN number gives the tendency for resistance against pitting corrosion. A higher PREN number means higher resistance to pitting corrosion.
c) Mechanical property data
304 and 316 sheets have comparable mechanical properties, while 316 tends to be harder. 201 sheets can have similar properties to 304 and 316 but are also available with higher toughness and hardness.
430 sheets feature a lower toughness and lower hardness compared to 201, 304 and 316.
