1. Material Standards & Designation

Primary Standards:

• JIS G 3313 - Electrolytic zinc coated steel sheets and coils

• JIS G 3141 - Cold-rolled carbon steel sheets and strips

Designation Explanation:

• SECC: Steel Electrolytic Chromate Coated

• Equivalent to: ECCT (Electrolytic Chromate Coated Steel)

2. Chemical Composition (% by weight, Base Steel SPCC)

3. Mechanical Properties

4. Coating System Specifications

Electro-galvanized Coating (Substrate):

Organic Coating System:

5. Physical Properties

6. Product Specifications

7. Surface Characteristics

Coating Performance:

Surface Treatment Options:

• Chromate: Regular, Non-chromium environmental type

• Phosphate: For improved paint adhesion

• Special: Conductive, Anti-fingerprint, Self-healing

8. Testing & Inspection

Mandatory Tests:

• Tensile test (JIS Z 2241)

• Bend test (JIS Z 2248)

• Salt spray test (JIS Z 2371)

• Adhesion test (Cross-cut method)

• Color difference measurement (ΔE ≤ 1.0)

• Gloss measurement (±5%)

• Film thickness measurement

• Surface resistance test

Optional Tests:

• Pencil hardness test

• Impact resistance test

• Chemical resistance test

• Humidity resistance test

• Third-party certification

9. Applications

Electronics Applications:

• Computer chassis and components

• Server cabinets

• Electronic enclosures

• Office equipment housings

• Communication devices

Appliance Applications:

• Home appliance cabinets

• Refrigerator interiors

• Washing machine panels

• Air conditioner parts

• Microwave oven cavities

Other Applications:

• Automotive interiors

• Furniture components

• Display fixtures

• Lighting equipment

• Precision instruments