ISO 4782:1987

Overview

ISO 4782:1987 is an international standard developed by the International Organization for Standardization (ISO) that specifies the diameters, requirements, tolerances, and testing methods for metal wire used in industrial wire screens and woven wire cloth. Applicable to wire with a circular cross-section ranging from 0.02 mm to 25 mm in diameter, this second edition supersedes the first edition from 1981 and provides enhanced clarity on tolerances and testing procedures.

This standard aims to ensure uniform quality and performance of metal wire in industrial applications, facilitating compatibility and reliability in manufacturing processes that involve wire screens and woven wire materials.

Key Topics

• Diameter Specifications: Defines nominal wire diameters using preferred number series R10, R20, and includes the 0.03 mm value from R40 series to cover wire sizes comprehensively.
• Tolerance Limits: Specifies allowable deviations on nominal diameters to guarantee dimensional accuracy crucial for industrial sieves and wire cloth.
• Surface Quality: Details visual inspection criteria requiring wire surfaces to be smooth without burrs, corrosion, stains, or defects such as knots or welded spots, ensuring structural integrity and longevity.
• Testing Procedures: Includes sampling methods, measurement protocols (using micrometer calipers compliant with ISO 3611), and reporting requirements to assess conformity.
• Linear Density & Running Length: Provides formulas for calculating wire linear density (kg/km) and running length (m/kg), supporting material estimation and quality control.
• Marking and Delivery Requirements: Specifies essential information to be marked on coils, drums, or spools including standard number, manufacturer name, wire material, diameter, tensile strength, chemical analysis, and manufacture date.

Applications

ISO 4782:1987 is critical for manufacturers and suppliers of metal wire intended for:

• Industrial Wire Screens: Used in filtration, separation, and sizing processes across industries such as mining, agriculture, food processing, and chemical production.
• Woven Wire Cloth: Employed for protective covers, mesh filters, reinforcement material, and architectural applications.
• Sieving Equipment: Ensures wire quality meets stringent standards for effective particle size separation and durability.
• Quality Assurance: Serves as a benchmark for quality control labs, production engineers, and purchasing departments to validate wire specifications before use or procurement.

By adhering to this standard, organizations achieve enhanced operational efficiency, reduced rework, and consistent product performance critical in industrial wire cloth fabrication.

Related Standards

• ISO 3 – Preferred Numbers: Provides series of preferred numbers foundational to defining nominal diameters in ISO 4782.
• ISO 3611 – Micrometer Calipers: Establishes measurement tools and usage protocols for dimensional accuracy testing as referenced in ISO 4782.
• ISO/TC 24 – Sieves and Sieving Methods: Technical committee responsible for developing related international standards in the field of sizing and screening.

Integrating ISO 4782 with these complementary standards offers a comprehensive quality framework covering all aspects of wire dimensioning, testing, and industrial usage.

Keywords: ISO 4782, metal wire standard, industrial wire screens, woven wire cloth, wire diameter tolerance, wire testing methods, wire linear density, wire marking, wire manufacturing standards, industrial sieves, wire quality control.