Water Heater RTU Enamel Powder

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General Usage:
It is a high quality RTU enamel powder, especially for electric/solar/air energy water heaters, and water storage boilers.

Product Description:

NAME: Water Heater RTU Enamel Powder 1982

RTU-1982 is pre-grinding enamel powder which fineness is 30 mesh.

The coating made of such product has smooth surface, fine adherence, good stability and appropriate glossy could be obtained when firing temperature & time is controlled well.

MATERIALS RATIO:
RTU-1982 Powder	100
Water	38-40ml

APPROVABLE STANDARD:
a. Fineness of the powder: 28～32g/100g/200 mesh b. Pulp density: 175～185g/100ml c. Thickness of enamel coating: between 0.15 and 0.50mm d. Firing temperature: 840-860°C. Keep firing for 8-12 minutes above 800°C, and keep firing for 4-6 minutes above 840°C

TEST METHOD:
Adhesion: Grade 2 or higher Resistant to 10% citric acid (room temperature): Grade A or above Hydrochloric 10% hydrochloric acid(1 hour at room temperature): Grade A Corrosion resistance to boiling water: ≤ 6.0g/m2 Temperature change resistance: 200 ℃/20min/5 times, visually undamaged Lead migration: ≤0.1mg/dm2 Cadmium migration: ≤0.05mg/dm2

NOTE:
The thickness of glaze slip, fineness of powder, firing temperature & time should be adjusted and controlled very well to get a good coating gloss.

Health Information

This water heater RTU enamel powder does not contain Pb, Hg, Cd, Cr+6

Noli Frit Enamel Powder Quality Test Report

Test Item	Test Protocol	Status	Compliance Standard
Flowability Test	Granular flow characteristics analysis	Pass	ISO/DIS 8130-5
Adhesion Test	Substrate bonding performance	Pass	European Enamel Association Sec.8.4.3
Resistivity Test	Electrical resistance measurement	Pass	European Enamel Association Sec.8.4.4
Coating Thickness	Layer depth verification	Pass	IS 13273:1991 (5.3.3)
Impact Resistance	Mechanical stress simulation	Pass	IS 13273:1991 (5.3.2.5)
Citric Acid Test	Chemical corrosion resistance	Pass	IS 13273:1991 (5.3.2.2)
Thermal Shock	Rapid temperature cycling	Pass	IS 13273:1991 (5.3.2.4)
Visual Inspection	Surface defect identification	Pass	Internal QS-045

Through rigorous IQC (Incoming Quality Control) and IPQC (In-Process Quality Control) procedures, Noli frit enamel powder has demonstrated exceptional performance characteristics across all test parameters when applied to flat surfaces, door components, and tank assemblies.

Noli Frit Enamel Quality Certification

Physical Properties

Flowability Test

Pass

Test Method Hall Flowmeter

Flow Time 48.6 sec/50g

Angle of Repose 32° ±1.5°

ISO/DIS 8130-5 (Flow rate ≤50s/50g)

Chemical Resistance

Citric Acid Test

Pass

Concentration 10% w/v

Exposure Time 24hr @25°C

ΔE Value < 0.8

IS 13273:1991 (5.3.2.2)

Through IQC and IPQC procedures, Noli frit enamel powder demonstrates exceptional performance on flat surfaces, door components, and tank assemblies across all test parameters including:

Flowability: 48.6s/50g
Peel Strength: ≥12.5MPa
Thermal Cycles: 15 passes
ΔE Value: <0.8

Certification Date: 2023-09-15 | Lab ID: NE2023-087

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