EK-D04
Room-temperature curing anti-corrosion coating
Room-temperature curing, heat-resistant anti-corrosion coating; ready-to-apply member of the EK-D04/D05 series.
FORM
One-component coating
APPEARANCE
Black
CURING
Ambient / 180 · >24 (ambient) / <0.5 (180 °C)
Documents
TDS · SDS
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
This product uses room-temperature-curing polysilazane as the film-forming binder, with copper chromite black powder, phosphates, inorganic silicon powder and other fillers. The coating withstands temperatures above 600 °C, offers high hardness, a dense waterproof film, resistance to acid and salt-spray corrosion, and resistance to aging. As a high-temperature coating based on a novel organic–inorganic hybrid system, the product combines multiple composite materials, including high-temperature molecular materials, anti-rust fillers, ultrafine powders and an organic polymer dispersion. After curing, the particles and resin pack densely and the finish shows a moderate gloss. The raw materials are mainly ionic compounds; on curing they form covalent bonds with the substrate, and this chemical bonding greatly increases the mechanical strength of the coating.
Typical applications: (1) electric heaters, boiler components, piping, valves, heat exchangers, radiators; (2) high-temperature devices and high-temperature sensor components; (3) metallurgical equipment surfaces, mold surfaces, casting equipment surfaces; (4) electric heating elements, tanks, enclosures; (5) small household appliances and kitchenware (burner caps, rice cookers), etc.; (6) high-temperature components in the chemical and metallurgical industries.
Choose this grade when parts cannot be oven-cured: room-temperature-curing black nano-ceramic with -30…600 °C service (800 °C peaks); heat-accelerated cure (180 °C) optional.
Final fit is confirmed during technical review — send your substrate, operating environment and application process, and the team will confirm this grade or point you to a closer one.
Suitable for
Industrial applications within the TDS parameters
Metal, glass, ceramic and stone substrates — per grade
Professional application and curing processes
Not intended for
Consumer or DIY use — industrial B2B supply only
Conditions outside the parameters defined in the TDS
Food-contact or medical use unless explicitly confirmed
Applications
Recommended application areas for this grade, based on its TDS. Application fit is confirmed during technical review.
Recommended applications for this grade:
Technical data
Key values from this grade's TDS. The complete measured data set follows below; the official document is available on request.
PROPERTY
TYPICAL VALUE
NOTES
Solid content
70-85 %
—
Viscosity
21–26 s
—
Max service temperature
-30 to 600 °C service · 800 °C peak
Depends on cure & film build
Curing conditions
Ambient / 180 · >24 (ambient) / <0.5 (180 °C)
Per application process
Recommended film thickness
30±5 µm
—
Shelf life
6 months (storage at 5–30 °C)
Storage conditions apply
Service temperature. Maximum withstand temperature 800 °C; suitable for long-term service at 600 °C, resistant to flame and high-temperature gas-flow scouring. Depending on the temperature resistance of the substrate, the temperature resistance of the coating will vary accordingly; resistant to cold–heat cycling and thermal shock (note: the product supplied for different substrates will differ).
Basic Coating Data
Coating appearance: Black — Visual inspection
Coating components: Two-component (A:B = 2:1)
Mixed density: 1.63–1.72 g/cm³ — Measured
Coating Film Properties
Condition in container: Uniform, no caking or sediment — Visual inspection
Mixed color: Black — Visual inspection
Mixed viscosity: 21–26 s — GB-T 1723-1993
Adhesion: Grade 0 (cross-cut) — GB-T 9286-1998
Film hardness: ≥5H — GB-T 6739-2006
Neutral salt spray resistance: 30 d: no blistering, no cracking, no rust spots — GB-T 10125-2021
Artificial weathering resistance: 30 d: no rusting, no chalking, no cracking, slight discoloration — GB-T 1865-2009
Thermal shock test: 600 °C for 1 h, water-quench method, more than four cycles: no visible cracking — GB/T 30873-2014
Basic Application Parameters
Coating solids content (%): 70-85
Volatility: Low volatility
Theoretical coverage (m²/kg): 10–15
Curing temperature (°C): Ambient / 180
Dry film thickness (µm): 30±5
Curing time (h): >24 (ambient) / <0.5 (180 °C)
Working time (pot life) (h): 6
Maximum transient temperature resistance (°C): 800
Thinner: Alkanes, esters, ethers, etc.
Recommended service temperature (°C): -30 to 600
Flash point (°C): <22 (solvent flash point)
Warehouse storage (°C): 0–30
Data above is taken from the manufacturer’s TDS. Request the official document via the documents section below.
Substrates & storage
Compatibility and handling essentials — confirmed per grade in the TDS and SDS.
Suitable substrates
Steel and stainless steel
Aluminium and other metals
Glass and ceramics
Stone and mineral surfaces
Carbon steel, stainless steel, cast iron, aluminum alloy, titanium alloy, high-temperature alloy steel, glass-ceramic panels, ceramics, cement and similar materials are all suitable. Note: the coating formulation differs depending on the substrate; within a certain range, it can be adjusted to match the substrate and its service conditions.
Storage, packaging & transport
Store in accordance with national regulations. The storage environment should be dry, cool and well ventilated, away from heat and ignition sources. Containers must be kept tightly sealed and placed with care.
Storage temperature must be maintained between 5 °C and 30 °C; shelf life is 6 months.
Opened but unused coating must be resealed tightly in its container for storage.
Mixed coating that has not been used up cannot be reclaimed and must be disposed of in accordance with local regulations.
Product past its shelf life may be used only after testing confirms it still meets specification.
Packaging
1 kg / 5 kg / 25 kg (grade-dependent)
Transport classification
Per SDS
Application process
General guidance — exact parameters are provided in the TDS and Application Guide.
01
Surface preparation
Clean, degrease and prepare the substrate.
02
Application
Spray, dip or wipe depending on grade.
03
Curing
Cure per the TDS conditions.
04
Quality control
Verify film build and adhesion.
Standard process: Surface cleaning → Abrasive roughening → Cleaning and blow-off → EK-D04 treatment → Curing
Abrasive roughening. Before coating, sand or blast the substrate surface to remove rust, dust, dirt and other contamination adhering to the workpiece surface. Surface roughening has a significant effect on coating performance; Sa2.5 is optimal, and the minimum is St3 with no mill scale (GB/T 30790.4-2014), so pay close attention to this step.
Cleaning. Use a dedicated cleaner or degreaser to remove residual oil, dust and other contamination from the roughened surface.
Substrate drying. Before coating, ensure the substrate surface is dry and clean.
Coating mixing. This product is two-component; take the appropriate amounts of coating at the specified mixing ratio, stir until thoroughly and uniformly mixed, and filter through a 300-mesh screen before use.
Coating application. For laboratory spray application, a spray gun with a 1.0 mm nozzle gives better appearance and uniformity.
Curing. After spraying, for room-temperature curing: surface-dry in 1 hour, touch-dry in more than 2 hours, through-dry in more than 24 hours. Rapid heat curing is also possible (hold at 180 °C for 20 minutes).
Note: This product is a two-component room-temperature-curing product; mixed coating must be used within 6 hours. During longer interruptions in application, clean the application tools thoroughly to prevent them from setting solid. Application in a single spray pass is recommended, with a dry film thickness not exceeding 50 µm; otherwise coating film performance will be reduced.
More grades
Browse the full catalogue by category, or send your requirements — we will recommend a grade for your case.
Organic Polysilazane Resins
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Inorganic Polysilazane / Ceramic Precursors
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Modified Polysilazane Coatings
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Ready-to-use Ceramic Coatings
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High-temperature Ceramic Coatings
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Adhesives
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Ordering & logistics
Common questions from procurement and engineering teams.
What packaging formats are available?
Standard packaging is 1 kg, 5 kg and 25 kg containers, grade-dependent. Other formats, minimum order quantity, lead times, shipping terms and stock availability are confirmed on request.
What is the minimum order quantity for this product?
MOQ depends on the packaging format — confirmed by our team for your grade and volume.
What happens after I send an inquiry?
Our technical team reviews your requirement and responds with a recommendation, the relevant documents and next steps.
How do I get a quotation?
Include your estimated volume and application in the inquiry — a quotation follows the technical review.
How is the product shipped?
Packaging, transport classification and shipping details are provided per SDS — request packaging and shipping information with your inquiry.