ASTM E389

ASTM E389 is a test method focused on particle size or screen analysis at the 4.75 mm (No. 4) sieve and coarser for metal-bearing ores and related materials. It provides a standardized way to evaluate coarse material by screening, helping laboratories and operations compare results consistently. This matters in quality control, material characterization, and product evaluation where coarse size distribution can affect handling, processing, and downstream performance.

Overview of ASTM E389

ASTM E389 addresses the measurement of particle size by screen analysis for metal-bearing ores and related materials at the No. 4 sieve and larger sizes. As an ASTM standard, it supports a common technical approach for coarse material testing, which helps reduce variation between laboratories and users. The standard is especially relevant when screen-based grading is needed to describe material condition, verify consistency, or support specification-based decisions in mineral and ore handling workflows.

Common use cases of ASTM E389

This standard is commonly used in laboratories and plant environments that evaluate metal-bearing ores and similar coarse materials. It may be applied during incoming material checks, process control, and routine quality verification where screen analysis at and above 4.75 mm is required. ASTM E389 is also useful when comparing lots, documenting particle-size distribution, or supporting procurement and acceptance decisions for materials that are screened rather than finely analyzed.

Benefits of using ASTM E389

Using ASTM E389 helps bring consistency to coarse particle-size testing by giving buyers, producers, and laboratories a shared method for screen analysis. That can improve reproducibility, support compliance with technical requirements, and reduce uncertainty in material evaluation. For metal-bearing ores and related materials, a standard method also helps make results easier to compare across batches, facilities, and testing programs, which supports better quality control and lower risk in decision-making.

• Screen analysis at 4.75 mm (No. 4) and coarser
• Designed for metal-bearing ores and related materials
• Supports consistent coarse particle-size evaluation
• Useful for quality control and acceptance checks
• Helps standardize laboratory and plant reporting