Name: ISO 10502:2012 — Aerospace — Hose assemblies in polytetrafluoroethylene (PTFE) for use up to 232 °C and 10 500 kPa — Technical specifications and requirements
SKU: ISO 10502:2012
Price: 25 EUR
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Abstract

Overview

ISO 10502:2012 defines technical specifications and requirements for aerospace hose assemblies made with polytetrafluoroethylene (PTFE) liners. The standard applies to PTFE hose assemblies used in aircraft hydraulic, fuel and lubricating-oil systems and compatible aerospace pneumatic systems (where gaseous diffusion through the PTFE liner is acceptable). It covers assemblies rated for nominal pressures up to 10 500 kPa (105 bar / 1 523 psi) and temperatures for Class I up to 232 °C (450 °F) and Class II up to 135 °C (275 °F).

Key topics and technical requirements

Scope & classes: Distinguishes Class I (fittings of corrosion‑resistant steel or titanium - up to 232 °C) and Class II (steel and aluminium fittings - up to 135 °C; DN12 and larger).
Materials: Specifies use of virgin PTFE inner tubes and corrosion‑resistant metals (stainless steels, titanium, specified aluminium alloys). Metals may be substituted only with equivalent, approved materials.
Construction: Hose assemblies comprise a seamless PTFE inner tube, corrosion‑resistant steel‑wire reinforcement, and aluminium/steel/titanium end fittings. Default end‑fitting geometry is a 24° cone unless purchaser requests otherwise.
Inner tube properties:
- Relative density limits: ≤ 2,210 g/cm3 (method A/B) or ≤ 2,155 g/cm3 (method C per ISO 7258).
- Longitudinal tensile strength ≥ 15.1 N/mm2.
- Elongation ≥ 200%.
- Electrical conductivity requirements: ≥ 10 µA for DN05–DN12; ≥ 20 µA for DN16+ (ISO 8829-1 test).
Dimensional & performance checks: Defines dimensional limits, minimum bend radii, bore passage (90% sphere check), linear density (weight) and effusion/negative pressure behaviour.
Testing & inspection: Requires qualification and quality‑conformance testing (tube roll, proof pressure, burst/operational pressures, impulse testing per ISO 6772), sampling procedures, and permanent marking (including fire‑resistance type per ISO 2685).
Limitations: Not intended for pneumatic storage systems; special media (e.g., oxygen) or usage beyond the listed limits require purchaser approval.

Applications and users

Practical uses: aircraft hydraulic lines, fuel lines, and lubricating‑oil plumbing where high temperature, chemical resistance and compact routing are needed.
Key users: aerospace OEMs, hose and fitting manufacturers, maintenance/repair organizations (MRO), procurement and quality assurance engineers, and certification authorities specifying component acceptance criteria.

Related standards

ISO 8829-1 (PTFE inner-tube test methods)
ISO 7258 (PTFE density methods)
ISO 6772 (impulse testing)
ISO 2685 (aircraft fire resistance)
ISO 5855-3 (threads for fittings)
ISO 2859-1 (sampling procedures)

Keywords: ISO 10502:2012, PTFE hose assemblies, aerospace hose, aircraft hydraulic hose, 10 500 kPa, 232 °C, Class I Class II, hose qualification, PTFE inner tube.

ISO 10502:2012

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 7258:1984

Polytetrafluoroethylene (PTFE) tubing for aerospace applications — Methods for the determination of the densi…

ISO 8829-1:2009

Aerospace — Test methods for polytetrafluoroethylene (PTFE) inner-tube hose assemblies — Part 1: Metallic (st…

ISO 6772:2012

Aerospace — Fluid systems — Impulse testing of hydraulic hose, tubing and fitting assemblies

BS ISO 2685:1998

Aircraft. Environmental test procedure for airborne equipment. Resistance to fire in designated fire zones.

ISO 5855-3:1999

Aerospace — MJ threads — Part 3: Limit dimensions for fittings for fluid systems

BS ISO 28591:2017

Sequential sampling plans for inspection by attributes.