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.
