SIST EN ISO 1141:2021 PDF

Overview - EN ISO 1141:2021 (ISO 1141:2021) - Polyester fibre ropes

EN ISO 1141:2021 specifies requirements and designation rules for polyester fibre ropes in common constructions: 3‑strand hawser‑laid, 4‑strand shroud‑laid, 8‑strand braided and 12‑strand braided ropes for general service. The standard defines construction types (A, B, L, T), linear density (ktex), minimum breaking strength (MBS) values and marking rules. It replaces EN ISO 1141:2012 and clarifies that not all performance variations are covered - the rope manufacturer should be consulted to ensure suitability for a specific application.

Example designation: Fibre rope ISO 1141 – A – 30 – PES – 1 (3‑strand hawser‑laid, reference number 30, polyester, type 1 heat‑set)

Key topics and technical requirements

• Constructions covered: Type A (3‑strand), Type B (4‑strand), Type L (8‑strand braided), Type T (12‑strand braided).
• Designation rules: Number of the document (ISO 1141), construction/type code, reference number, material (PES) and stabilization type (1 = heat‑set, 2 = not heat‑set).
• Linear density and MBS tables: Nominal linear densities (ktex) and corresponding minimum breaking strengths (kN) for new dry and wet ropes are provided in Tables 1–3. Linear density is measured under reference tension per ISO 2307.
• Tolerances: Specified tolerances on linear density are included; the 2021 edition modified some linear density tolerances versus the previous edition.
• Marking: Type 1 ropes with reference numbers