Overview
EN ISO 6501:2020 - Ferronickel: Specification and delivery requirements (ISO 6501:2020) sets the technical delivery, chemical and sampling requirements for ferronickel products commonly used in steelmaking and foundry operations. The standard covers ferronickel supplied as ingots, pieces and shot, defines nickel-grade designations (FE Ni 20, 30, 40, 50, 70) and classifies impurity levels. EN ISO 6501:2020 replaces the earlier edition and aligns compositional, packing and lot-formation practices across suppliers and purchasers.
Key topics and technical requirements
- Chemical composition and grades
- Nickel content categories: FE Ni 20, FE Ni 30, FE Ni 40, FE Ni 50, FE Ni 70 (specified Ni % ranges in Table 1).
- Impurity classification: Table 2 defines low / medium / high ranges for main constituents and usual impurities (elements such as C, Si, P, S, Cr, Co, Cu). Purchasers can request tighter limits or limits for additional elements (e.g., As, Pb) by agreement.
- Forms of delivery and dimensional limits
- Ingots: max mass 100 kg; thickness 30–150 mm; length ≤ 1 100 mm; may be notched or unnotched.
- Pieces: cast or cut, maximum dimension 25–100 mm; sizes within a lot must be uniform.
- Shot: particle size 2–50 mm; shot must be delivered dry.
- Lot formation and minimum tonnage
- Default minimum lot size: 5 t (unless otherwise agreed).
- Lots may be formed from single taps or blended heats; blending rules limit the allowable Ni spread (e.g., K to K+1 % for ingots/pieces; broader ranges possible for shot when reclaimed from blended storage).
- Contamination
- Material must be as free as possible from surface contaminants (slag, sand, etc.).
- Control, sampling and dispute procedures
- Sampling and analysis provisions and procedures for supplier certificate, exchange analysis and dispute resolution (contradictory and arbitration procedures).
Applications and who uses this standard
- Intended for steelmakers, foundries, ferroalloy producers, metal traders and quality laboratories that specify, supply or accept ferronickel.
- Practical use cases:
- Specifying purchase orders and delivery requirements.
- Defining lot-making, sampling and analytical acceptance criteria.
- Setting contractual limits on impurities and physical form for downstream steel and alloy production.
Related standards
Normative references used for sampling and analysis include:
- ISO 6352 - nickel determination
- ISO 8049 - ferronickel shot sampling
- ISO 8050 - ferronickel ingots/pieces sampling
- ISO 14284 - sampling and sample preparation for chemical analysis
Keywords: EN ISO 6501:2020, ferronickel specification, ferronickel delivery requirements, FE Ni grades, ferronickel ingots pieces shot, ferronickel chemical composition.