ISO 10387:1994 PDF

Overview

ISO 10387:1994 - Metal chrome: Specification and conditions of delivery - defines the requirements, delivery conditions and testing procedures for metal chrome supplied for alloying special steels and other alloys. The standard covers chemical composition, particle size ranges, consignment constitution, sampling and testing, packaging, storage and transport. It is intended for suppliers, purchasers and quality laboratories dealing with chromium metal for metallurgical use.

Key topics and requirements

• Chemical composition and grades
  • Defines metal-chrome grades with high chromium content (typically 98.0% to 99.6% Cr minimum by mass).
  • Grade designations reflect production method: E = electrolytic, A = aluminothermic, R = refined.
  • Limits for common impurities and an option for degassed electrolytic grade with gas limits (example: N2, O2, H2 maximums specified).
• Particle size and form
  • Material may be supplied as lumps or crushed/screened particles.
  • Particle-size classes and tolerances are specified (examples include ranges such as 10–100 mm, 2–50 mm, 2–20 mm, and