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Home / All / High-Temperature Resistant Coating / GM-176521 High-Temperature Nano Ceramic Coating | GOMIN

GM-176521 High-Temperature Nano Ceramic Coating | GOMIN

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Categories	High-Temperature Resistant Coating
Brand	Gomin Industry Coating Wholesale Manufacturer
Model	GM-176521
Brand	GOMIN
Model	GM-176521
Resin system	Polysilazane (room-temp cure)
Mix ratio (A:B)	2.5 : 1
Colour	Black-grey
Continuous service	1000 °C
Peak temperature	1200 °C
Pencil hardness	≥ 7H
Cure schedule	RT flash-off + 250 °C × 1 h
Coverage	10–15 m²/kg

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Detail Information

GOMIN GM-176521 — High-Temperature Nano Ceramic Coating

A polysilazane-based ceramic coating engineered for continuous service at 1000°C and peak exposure up to 1200°C on carbon steel, stainless steel, cast iron, aluminum and high-temperature alloy components.

Molten metal pouring from a furnace into a steel ladle — typical high-temperature environment for GM-176521 nano ceramic coating.

What is GM-176521?

GM-176521 is a two-component inorganic–organic hybrid high-temperature coating built on room-temperature-curable polysilazane resin, filled with copper-chrome black pigment, phosphate binders and inorganic silicon powder. After cure, the resin and filler pack into a dense, ceramic-like film that forms covalent bonds with the substrate rather than a simple mechanical key. The result is a hard, glossy black-grey finish that resists flame, hot gas erosion, thermal shock, salt spray and acidic atmospheres.

Unlike conventional silicone or epoxy heat-resistant paints, GM-176521 uses ionic compound raw materials that chemically bond to the base metal during cure, raising the mechanical strength of the film far above that of standard high-temperature enamels.

Why Choose GM-176521?

1000°C continuous service, 1200°C peak rating — verified by GB/T 30873-2014 thermal-shock testing (600°C × 1 h → water quench, 4+ cycles, no visible cracking).
7H pencil hardness (GB/T 6739-2006) with adhesion grade 0 (GB/T 9286-1998) on properly prepared steel substrates.
30-day neutral salt spray with no blistering, cracking or rust points (GB/T 10125-2021).
30-day artificial weathering with no rusting, chalking or cracking; only slight colour shift (GB/T 1865-2009).
Broad substrate range — carbon steel, stainless steel, cast iron, aluminium, titanium, high-temperature alloy, glass-ceramic, ceramic, concrete.
Room-temperature cure with a 250°C / 1 h post-bake option for production-line speed.

Refractory-lined industrial kilns with surrounding pipework — boiler and heat-exchanger coating application.

Technical Data

Base Coating Properties

Item	Indicator	Test / Standard
Coating appearance	Black-grey	Visual
Component system	Two-component (A : B = 2.5 : 1)	—
Mixed density	1.61 – 1.72 g/cm³	Measured

Cured Film Performance

Item	Test Standard	Result
Container condition	Visual	Uniform, no lumps or settling
Mixed colour	Visual	Black-grey
Mixed viscosity	GB/T 1723-1993	21 – 26 s
Adhesion	GB/T 9286-1998	Grade 0
Pencil hardness	GB/T 6739-2006	≥ 7H
Neutral salt spray	GB/T 10125-2021	30 d — no blister, crack or rust spot
Artificial weathering	GB/T 1865-2009	30 d — no rust, chalking or cracking; slight colour change
Thermal shock	GB/T 30873-2014	600°C × 1 h → water quench, ≥ 4 cycles, no visible cracking

Application Parameters

Item	Value	Item	Value
Solids content	70 – 85 %	Volatility	Low
Theoretical coverage	10 – 15 m²/kg	Cure temperature	180 – 250 °C
Dry film thickness	30 ± 5 µm	Cure time	> 1 h
Pot life	6 h	Instant peak resistance	1000 °C
Thinner	Alkane / ester / ether	Recommended service	−30 to 1000 °C
Flash point	< 22 °C (solvent)	Storage temperature	0 – 30 °C

Typical Applications

Electric heaters, boiler parts, pipes, valves, heat exchangers and radiators
High-temperature devices and high-temperature sensor housings
Surfaces of metallurgical equipment, moulds and casting machinery
Electric heating elements, tanks and enclosures
Small appliances and cookware (gas-burner caps, rice-cooker shells)
Chemical and metallurgical components exposed to high-temperature service

Pouring molten metal in a foundry — application scene for cast-iron mould surface protection with GM-176521.

Application Procedure

Surface cleaning — remove oil, dust and contaminants with a dedicated cleaner or degreaser.
Profile blasting / grinding — abrasive blast to Sa 2.5 (best) or mechanical grind to St 3 minimum, with all mill scale and rust removed (per GB/T 30790.4-2014).
Rinse & dry — ensure the substrate is completely dry and clean before coating.
Mix — combine A and B at 2.5 : 1 by mass, stir to a uniform blend, filter through 300 mesh.
Spray — apply with a 1.0 mm-nozzle spray gun for the best finish and uniformity.
Cure — room-temperature flash-off, then bake at 250 °C for 1 h to full cure.

Apply a single pass; dry film thickness should not exceed 50 µm — thicker films reduce performance. Mixed coating must be used within 6 hours.

Steelmaking plant with overhead ladle crane — heavy industrial environment protected by high-temperature ceramic coating.

Storage & Handling

Store in a dry, shaded, well-ventilated area away from heat and ignition sources, 5 – 30 °C, sealed.
Shelf life is 6 months from manufacture in unopened original packaging.
Re-seal partially used containers immediately; do not return mixed material to the original drum.
Dispose of expired or waste material in accordance with local environmental regulations.

Frequently Asked Questions

Q1: What is the maximum continuous service temperature of GM-176521?

GM-176521 is rated for continuous service at 1000 °C and instantaneous peaks up to 1200 °C. Actual endurance depends on substrate type — always request the formulation matched to your base material.

Q2: Can it be applied to stainless steel or aluminium?

Yes. GM-176521 is formulated for carbon steel, stainless steel, cast iron, aluminium alloy, titanium alloy, high-temperature alloy steel, glass-ceramic, ceramic and concrete. For best results, the formulation is adjusted to the substrate — contact GOMIN for the matching grade.

Q3: What surface preparation is required?

Abrasive blast to Sa 2.5 is recommended; mechanical preparation to St 3 (no mill scale) is the minimum. Surface must be dry and free of oil before coating. Surface preparation quality directly determines coating performance.

Q4: How thick should one coat be?

Recommended dry film thickness is 30 ± 5 µm per pass. Do not exceed 50 µm in a single pass — thicker films reduce hardness and corrosion resistance.

Q5: How long is the pot life after mixing?

Once A and B are mixed, the coating must be used within 6 hours. Clean spray equipment between long stops to prevent curing inside the gun.

Q6: Is GM-176521 suitable for outdoor or salt-spray environments?

Yes. GM-176521 passes 30-day neutral salt spray (GB/T 10125-2021) with no blistering, cracking or rust spots, and 30-day artificial weathering (GB/T 1865-2009) with only slight colour change.

Order & Technical Support

GM-176521 is supplied by Dalian Gomin Special Coating Co., Ltd. — ISO-certified manufacturer of UV coatings, high-temperature coatings, ultra-low-temperature coatings, thermal-radiation coatings, peelable coatings, ceramic coatings and abrasion-resistant coatings since 2007. Tell us your substrate, service temperature and part geometry — we will match the formulation, supply samples and support OEM / ODM orders.

Tel: 86-411-87317868 · www.mescocoating.com · No.1 Liaohe Middle Rd. 2, Dalian Economic & Technological Development Zone, Liaoning, China