ISO 1436:2020

Overview

ISO 1436:2020 - "Rubber hoses and hose assemblies - Wire-braid-reinforced hydraulic types for oil-based or water-based fluids - Specification" - defines requirements for wire-braid‑reinforced hydraulic rubber hoses and hose assemblies. It covers six hose types (1ST, 2ST, 1SN, R1AT, 2SN, R2AT) in nominal sizes 5 to 51, with additional sizes 63 (2SN, R2AT) and 76 (2SN) where specified. The standard applies to hoses for use with oil‑based hydraulic fluids (HH, HL, HM, HR, HV) at −40 °C to +100 °C, water‑based hydraulic fluids (HFC, HFAE, HFAS, HFB) and water at specified temperature ranges. ISO 1436:2020 is limited to hoses and hose assemblies and does not specify end fittings.

Key topics and requirements

• Classification and construction: Defines six wire‑braid‑reinforced hydraulic hose types and their intended cover thickness (thin vs. thick) and reinforcement layers.
• Dimensions and concentricity: Inside/outside diameters, cover thickness and concentricity tolerances (measured per ISO 4671).
• Performance testing: Mandatory performance checks including hydrostatic pressure tests, impulse (dynamic) tests for oil‑ and water‑based fluids, minimum bend radius, leakage tests for assemblies, low‑temperature flexibility, vacuum resistance, abrasion and ozone resistance, adhesion between components, and visual examination.
• Materials: Requirements for rubber lining compatible with oil‑ or water‑based fluids, steel wire reinforcement and weather/oil‑resistant covers.
• Marking and testing frequency: Rules for product marking and schedules for type and routine tests (with annexes covering production acceptance and recommended hose lengths).
• User responsibility: The standard notes it is the user’s responsibility, with the hose manufacturer, to confirm fluid compatibility.

Applications and who uses it

ISO 1436:2020 is essential for:

• Hose manufacturers and assemblers producing wire‑braid hydraulic hoses
• OEMs and designers specifying hydraulic hose assemblies for industrial, mobile, agricultural and construction equipment
• Procurement and quality assurance teams verifying supplier compliance
• Testing laboratories and certification bodies performing hydrostatic, impulse and durability tests Typical applications include fluid power systems conveying oil‑based or water‑based hydraulic fluids and general-purpose water handling where specified temperature and pressure limits apply.

Related standards

Commonly referenced standards and test methods include:

• ISO 6743‑4 (classification of hydraulic fluids)
• ISO 4671 (hose dimension measurement)
• ISO 1402 (hydrostatic testing)
• ISO 6803 / ISO 6605 (impulse and hose test methods)
• ISO 8330 (vocabulary), ISO 10619‑1/2 (flexibility tests)

Keywords: ISO 1436:2020, rubber hoses, wire‑braid‑reinforced, hydraulic hoses, hose assemblies, oil‑based fluids, water‑based fluids, hydraulic systems, hose testing.