metal book ends

IS 7076: Scope - Key Points and Specifications

• Scope: Covers specifications for mild steel sheets used for phosphating and painting treatments.
• Material Grade: Mild steel sheets must conform to Grade 0 of IS 513:1973 or IS 1079:1973.
• Shape & Dimensions: Refer to Clause 3 (details not provided here) for exact sheet sizes and thickness.
• Testing Requirements:
  • Flexibility & Adhesion Test (Clause 6.3):
    • Sample size: 150 mm x 50 mm, thickness 0.315 mm.
    • Test per IS 101:1964, Clause 17.
    • Paint film must show no damage, cracking, or detachment under 10x magnification.
• Rounding Off Values:
  • Follow IS 2:1960 for rounding test/analysis results.
  • Retain significant figures as per specified values.

Summary Table: Mild Steel Sheets (IS 7076)

flowchart TD
    A[Order Placement] --> B[Purchaser supplies technical info (Clause 7)]
    B --> C[Mild Steel Sheet per Grade 0 (IS 513/1079)]
    C --> D[Phosphate Treatment]
    D --> E[Painting & Enamel Application]
    E --> F[Flexibility & Adhesion Test (IS 101:1964)]
    F --> G[Pass: No damage/cracking]

This summarizes the scope and key specifications of IS 7076 related to mild steel sheets and their treatment.

IS 7076: Key Materials Specifications & Tests

Mild Steel Sheets (Clause 2.2)

• Conform to:
  • Grade 0 of IS 513-1973 (Cold Rolled Carbon Steel Sheets)
  • Grade 0 of IS 1079-1973 (Hot Rolled Carbon Steel Sheet and Strip)
• Thickness for book ends (Clause 4.1):
  • Steel sheet: ≥ 1.6 mm
  • Aluminium sheet: ≥ 2.0 mm
• Surface: No burrs or dents

Aluminium Sheets (Clause 2.1)

• Conform to Grades 31000 or 52000 of IS 737-1974
• Condition: H condition (strain hardened or strain hardened and stabilized)

Paint & Coating Tests (Clause 6.3)

• Sample size: 150 x 50 mm, thickness 0.315 mm
• Test: Flexibility and adhesion per IS 101-1964, Clause 17
• Acceptance: No damage, detachment, or cracking under 10x magnification

Summary Table

flowchart LR
    A[Material Selection] --> B{Type}
    B -->|Mild Steel| C[IS 513 / IS 1079 Grade 0]
    B -->|Aluminium| D[IS 737 Grade 31000/52000]
    C --> E[Thickness ≥ 1.6 mm for book ends]
    D --> F[Thickness ≥ 2.0 mm for book ends]
    E & F --> G[Surface: No burrs or dents]
    G --> H[Paint & Adhesion Test

IS 7076: Shape and Dimensions of Metal Book Ends

• Material Thickness:

  • Steel sheet: Minimum 1.6 mm thick (mild steel as per IS 513:1973 Grade 0 or IS 1079:1973 Grade 0)
  • Aluminium sheet: Minimum 2.0 mm thick

• Shape & Dimensions:

  • As per Fig. 1 in Clause 3.1 (typical metal book end sketch)
  • Dimensions are in millimetres
  • Manufacturer and purchaser may agree on other shapes/dimensions (Clause 3.1.1)

• Quality:

  • Sheets must be free from burrs or dents (Clause 4.1)

Typical Dimensions (from Fig. 1, IS 7076)

(Exact dimensions must be referred from Fig. 1 in IS 7076)

Summary Diagram (Conceptual)

graph TD
A[Vertical Plate] --> B[Base Plate]
A -- Thickness 1.6 mm (Steel) or 2.0 mm (Aluminium) --> B
B --> C[Flat Base for Support]

For precise dimensions, always refer to Fig. 1 of IS 7076.

IS 7076: Manufacture - Key Specifications

• Material Thickness:

  • Steel Sheet: Minimum 1.6 mm thick (cold/hot rolled carbon steel).
  • Aluminium Sheet: Minimum 2.0 mm thick.

• Material Standards:

  • Steel sheets must conform to:
    • IS 513-1973 (Grade 0, Mild Steel Sheets)
    • IS 1079-1973 (Grade 0, Mild Steel Sheets)
  • Steel sheet specifications:
    • Cold Rolled Carbon Steel Sheets (2nd revision)
    • Hot Rolled Carbon Steel Sheet and Strip (3rd revision)

• Manufacturing Quality:

  • Book ends must be free from burrs and dents.
  • Surface finish and dimensional accuracy per relevant IS standards.

• Rounding Off Test Results:

  • Follow IS 2-1960 for rounding off test values.
  • Maintain significant digits as per specified values.

Summary Table: Material Thickness

This ensures durability and compliance with IS 7076 manufacturing requirements.

IS 7076: Surface Preparation & Treatment Key Points

1. Surface Preparation (Clause 5.1 & 5.2)

• Remove dents, burrs, sharp edges.
• Components must be pickled, scrubbed, rinsed to remove grease, rust, scale.
• Immediately after pickling, apply phosphating treatment per Class C of IS 3618-1966.
• Phosphate coating process per IS 6005-1970.
• Use putty (IS 110-1968) for filling surfaces.
• Aluminium primer must conform to IS 5660-1970.

2. Flexibility and Adhesion Test (Clause 6.3)

• Sample size: 150 x 50 mm, thickness 0.315 mm.
• Test per IS 101-1964, Clause 17.
• Paint film must show no damage, detachment, or cracking under 10x magnification.

3. Corrosion Protection Test (Clause 6.5)

• Sample size: 150 x 100 mm, thickness 1.25 mm.
• Test per IS 101-1964, Clause 18.
• No corrosion should appear after condensation test.

Summary Table:

flowchart TD
    A[Surface Preparation] --> B[Pickling & Cleaning]
    B --> C[Phosphating Treatment (Class C)]
    C --> D[Putty Application]
    D --> E[

IS 7076: Performance Requirements of Finish

Key Specifications (Clauses 5.4, 6.3, 7.1)

• Anodizing: Aluminium book ends anodized to Grade AC 15 per IS 1868-1968 (Clause 5.4).
• Paint Coating: Enamel finish coats conform to IS 151-1950, IS 2932-1974, or IS 2933-1975 (Clause 5.3).
• Phosphate Treatment: For corrosion protection, follow relevant IS codes for phosphating iron and steel.
• Flexibility & Adhesion Test (Clause 6.3):
  • Test sample: Mild steel plate 150 x 50 mm, thickness 0.315 mm.
  • Test as per IS 101-1964 Clause 17.
  • Acceptance: No damage, detachment, or cracking under x10 magnification.

Order Information (Clause 7.1)

• Purchaser must specify:
  • Colour and finish
  • Alternative shapes and finishes, if any.

Summary Table: Finish Tests

flowchart TD
    A[Order Placement] --> B{Specify Finish}
    B -->|Colour & Finish| C[Supplier Applies Finish]
    B -->|Alternative Shapes| C
    C --> D[Apply Anodizing or Enamel]
    D --> E[Conduct Flexibility & Adhesion Test]
    E --> F{Passes Test?}
    F -->|Yes| G[Accept Finish]
    F -->|No| H[Reject / Rework Finish]

This ensures durable, corrosion-resistant, and visually acceptable finishes per IS 7076.

IS 7076: Information to be Supplied by the Purchaser (Clause 7.1)

When placing an order, the purchaser must provide:

• Colour and finish: Specify exact colour shade and surface finish.
• Alternative shapes and finishes: Clearly state if alternatives are acceptable.

Additional Relevant Specifications

• Material Grade: Mild steel sheets must conform to Grade 0 of IS 513:1973 or IS 1079:1973.
• Corrosion Test (Clause 6.5):
  • Test panel size: 150 mm x 100 mm, thickness 1.25 mm.
  • Finish as per Clause 5.
  • Test as per IS 101:1964 (Condensation corrosion test).
  • Result: No corrosion after test.

Summary Table for Purchaser Information

This ensures clarity in orders and conformity to IS 7076 standards.

IS 7076 - Marking Requirements for Metal Book Ends

Key Specifications (Clause 8.1 & 8.1.1)

• Manufacturer's Mark: All metal book ends must bear a suitable mark identifying the manufacturer.
• ISI Certification Mark: May be applied as per the Indian Standards Institution (Certification Marks) Act and related rules. It ensures:
  • Compliance with IS standards.
  • Production under a defined quality control system.
  • Continuous conformity checks by ISI.

Important Notes:

• The ISI mark is a quality assurance symbol, not mandatory but regulated strictly.
• Marking should be clear, durable, and legible on the metal surface.

Related Testing (Clause 6.3)

• Flexibility and Adhesion Test on mild steel samples (150 x 50 mm, thickness 0.315 mm) per IS:101-1964.
• Paint film must show no damage or cracking under 10x magnification.

Summary Table for Marking & Testing

flowchart LR
    A[Metal Book End] --> B[Mark Manufacturer's ID]
    B --> C{Use ISI Mark?}
    C -- Yes --> D[Apply ISI Certification Mark]
    C -- No --> E[No ISI Mark]
    D & E --> F[Quality Control & Testing]
    F --> G[Flexibility & Adhesion Test per IS:101-1964]
    G --> H[Pass: No damage/cracking under 10x magnification]

For detailed licensing and marking conditions, manufacturers should consult the Indian Standards Institution directly.

IS 7076: Quality Control and Testing Methods - Key Points

Flexibility and Adhesion Test (Clause 6.3):

• Test Sample: Mild steel plate, 150 x 50 mm, thickness 0.315 mm.
• Test Standard: As per IS 101:1964, Clause 17.
• Acceptance Criteria: Paint film must show no damage, detachment, or cracking under x10 magnification after bending.

Additional Specifications Referenced:

• Phosphate treatment for corrosion protection.
• Ready mixed paints (grey filler, aluminium red oxide primer).
• Enamels (undercoating, finishing).
• Anodic coatings on aluminium.
• Methods for testing paints and enamels (second revision).

General Quality Control Notes:

• Rounding Off Results: Follow IS 2:1960 for rounding test results to the same significant figures as the specified values.
• ISI Certification Mark: Indicates compliance with IS standards, verified by continuous inspection and testing.

Summary Table: Flexibility and Adhesion Test Sample Dimensions

flowchart LR
    A[Prepare Mild Steel Plate] --> B[Apply Paint Film]
    B --> C[Perform Flexibility Test as per IS 101:1964]
    C --> D[Inspect under x10 Magnification]
    D -->|No Damage| E[Pass]
    D -->|Damage/Cracking| F[Fail]

For detailed test procedures, refer to IS 101:1964 Clause 17 and Methods of test for ready mixed paints and enamels (second revision).