ISO 1005-1:1994

Overview - ISO 1005-1:1994 (Railway rolling stock material)

ISO 1005-1:1994 specifies the technical delivery conditions for rough-rolled tyres for tractive and trailing railway stock made from unalloyed steels. It defines requirements for chemical composition, physical and mechanical properties, dimensional characteristics, marking, inspection, manufacture, delivery and guarantee. The part is linked to the general delivery requirements of ISO 404 and is part of the broader ISO 1005 series for railway rolling stock material.

Key topics and technical requirements

• Scope and applicability: Requirements apply to rough-rolled tyres produced from killed, bottom-poured or continuously cast unalloyed steels (open hearth, electric arc or basic oxygen processes unless otherwise agreed).
• Steel grades and heat treatment: Designated grades include C46 GT‑N, C55 GT‑N, C57 GT‑N/E, C67 GT‑N/E and C77 GT‑E with specified delivery heat-treatment conditions (normalized, normalized + tempered, or immersion quenched + tempered).
• Chemical composition and analysis: Chemical composition limits are given per grade; cast analysis is acceptable unless otherwise agreed.
• Mechanical and physical properties: Mechanical properties (tensile, hardness - Brinell testing referenced) are specified per grade; uniformity of hardness and microstructure requirements may be ordered.
• Dimensions and finish: Degree of finish on delivery is rough-rolled; dimensional tolerances, shape and machining allowances are referenced to ISO 1005‑2.
• Soundness and defect control: Microstructure, macroscopic and macrographic examinations, sulfur prints and ultrasonic flaw detection (ISO 5948) can be required. Restrictions on authorized repairs and prohibited remedial processes (e.g., welding or metallization) are specified.
• Marking and traceability: Mandatory stamping of manufacturer, cast number, grade, heat treatment, manufacture date and inspector’s mark; identification through manufacture stages is required.
• Inspection, delivery and guarantee: Defines delegated inspection options, test units, submission procedures, certification (ISO 10474), and purchaser-specified information and acceptance criteria.

Applications and users

This standard is intended for:

• Railway wheel and tyre manufacturers and rolling-mill producers
• Rolling stock OEMs and maintenance workshops performing tyre replacement or repair
• Procurement teams specifying material and delivery conditions for tyres
• Quality, inspection and certification bodies performing acceptance testing
• Rail authorities and engineering departments ensuring compliance with material and safety requirements

Practical benefits include clearer procurement specifications, consistent material quality, traceable manufacturing and inspection protocols, and improved operational safety for wheel reprofiling and tyre replacement.

Related standards

• ISO 404 (General technical delivery requirements)
• ISO 1005 series (Parts 2, 3, 4, 6, 7, 8, 9)
• ISO 5948 (Ultrasonic testing), ISO 6506 (Brinell hardness), ISO 6892 (Tensile testing), ISO 83 (Charpy test), ISO 10474 (Inspection documents), ISO 377 (Sampling)

Keywords: ISO 1005-1:1994, rough-rolled tyres, railway rolling stock, tyre technical delivery conditions, wheel tyre standards, unalloyed steel tyres, tyre inspection.