DIN 51524-2 2017-06 PDF

Full title and description

STB DIN 51524-2 2017-06 — National publication/adoption of DIN 51524-2:2017, "Pressure fluids — Hydraulic oils — Part 2: HLP hydraulic oils, Minimum requirements". The document defines minimum performance and compositional requirements for HLP-type hydraulic oils used in hydraulic systems subject to high thermal and/or corrosive stress and where anti-wear additives are required.

Abstract

This standard specifies minimum requirements (physical, chemical and performance) for mineral‑oil based HLP hydraulic oils intended for hydraulic systems (predominantly hydrostatic drive) where high thermal stress, possible water ingress and mixed‑friction pump/motor conditions require anti‑wear and corrosion protection. It lists required test properties, performance classes and acceptance criteria used for specification and procurement of HLP hydraulic fluids.

General information

• Status: Active / Valid (current edition published and in force).
• Publication date: 1 June 2017 (edition labeled 2017-06).
• Publisher: Deutsches Institut für Normung (DIN).
• ICS / categories: 75.120 — Hydraulic fluids.
• Edition / version: 2017 (edition published June 2017; replaces the 2006 edition).
• Number of pages: 11 pages (typical published PDF length).

Scope

The standard applies to HLP hydraulic oils for hydraulic systems, especially hydrostatic drives, where elevated thermal loading occurs, where water ingress may cause corrosion, or where pump and motor designs or operating conditions require anti‑wear additives for mixed friction. HLP oils covered by this document may also be used in hydrodynamic drive systems if they meet those systems' requirements. The standard defines the minimum property levels and test procedures required for classification and acceptance.

Key topics and requirements

• Definition and classification of HLP hydraulic oils (performance categories and viscosity grades).
• Minimum physical and chemical property limits: viscosity at reference temperatures, viscosity index, flash point, pour point, density.
• Oxidation/ageing stability requirements and recommended testing methods.
• Corrosion protection criteria (water tolerance and corrosion testing).
• Anti‑wear performance and additives for mixed‑friction pump/motor applications.
• Contamination and filtration guidance; typical inspection and acceptance tests.
• Reference test methods and sampling/inspection procedures for conformity checks.

Typical use and users

Used by specifiers and purchasers of hydraulic fluids, lubricant manufacturers, hydraulic-system designers and OEMs, maintenance and reliability engineers, testing laboratories and certification bodies. Typical applications include mobile and industrial hydraulic machinery with hydrostatic drives, construction and agricultural equipment, and any systems where thermal stress, water ingress or mixed‑friction components demand reliable anti‑wear and corrosion protection.

Related standards

Other parts of the DIN 51524 series (Part 1 — HL hydraulic oils; Part 3 — HVLP hydraulic oils), ISO/DIN standards on hydraulic fluids and related test methods (for example ISO 12922 and ISO test procedures referenced within DIN 51524‑2). National adoptions and corrigenda related to DIN 51524 family may also apply.

Keywords

Hydraulic oils, HLP, hydraulic fluids, anti‑wear, viscosity, corrosion protection, oxidation stability, minimum requirements, DIN 51524‑2, pressure fluids.

FAQ

Q: What is this standard?

A: DIN 51524‑2 (published June 1, 2017) is the part of the DIN 51524 series that sets minimum requirements for HLP‑type hydraulic oils — mineral‑based anti‑wear hydraulic fluids used in many hydraulic systems. The reference in the title "STB DIN 51524‑2 2017‑06" indicates a national document package/adoption referencing the DIN edition dated June 2017.

Q: What does it cover?

A: It covers performance criteria, required physical/chemical limits, anti‑wear and corrosion protection characteristics, and the test methods used to verify those minimum requirements for HLP hydraulic oils. It is intended for specification, procurement and evaluation of hydraulic oils.

Q: Who typically uses it?

A: Lubricant formulators and suppliers, hydraulic equipment manufacturers and OEMs, maintenance engineers, procurement specialists, and testing laboratories use the standard to specify and verify hydraulic oil suitability and conformity.

Q: Is it current or superseded?

A: The 2017 edition (2017‑06) supersedes earlier editions (for example the 2006 edition) and is listed as the valid/current DIN edition published in June 2017. Users should confirm for their jurisdiction whether any later revisions, national amendments or replacements exist.

Q: Is it part of a series?

A: Yes — it is Part 2 of the DIN 51524 series (Part 1: HL hydraulic oils; Part 3: HVLP hydraulic oils). The series collectively addresses minimum requirements for different hydraulic oil types.

Q: What are the key keywords?

A: HLP, hydraulic oil, anti‑wear, viscosity, corrosion protection, oxidation stability, minimum requirements, hydraulic fluids, DIN 51524‑2.