Reference profile
- Designation
- ISO 3448
- Title
- Industrial Liquid Lubricants — ISO Viscosity Classification
- Issuing body
- ISO
- Current edition
- [verify]
- Status
- Library record: reviewed; official standard status [verify].
- Category
- Material & Fabrication
1
Overview
Viscosity classification system (ISO VG grades) for industrial liquid lubricants.
2
Scope & Applicability
Covers
- ISO VG grades
- Kinematic viscosity at 40°C
- Grade selection
Does NOT cover (exclusions)
- Exclusions are not documented in this library record. Confirm the official publication, neighbouring codes, the adopted edition, and jurisdictional boundaries before application.
3
Key Requirements
Lifecycle requirements
- Lube oil grade selection
- Machinery lubricant specification
4
Technical Details
Viscosity classification system (ISO VG grades) for industrial liquid lubricants.
Components: ISO VG 32, ISO VG 46, ISO VG 68.
Where to find it in the codeRefer to the official table of contents and the sections cited by the project specification; section numbering can vary by edition.
5
Engineering Notes
- ISO VG numbers equal the nominal kinematic viscosity (cSt) at 40°C; VG 32/46/68 are common for turbines and gears.
6
Related Standards
- ASTM D445
Companion or referenced standard; verify its exact relationship in the adopted edition.
- ASTM D2270
Companion or referenced standard; verify its exact relationship in the adopted edition.
- API 614
Companion or referenced standard; verify its exact relationship in the adopted edition.
7
Source, Edition & Status
- Publisher
- ISO
- Edition Year
- N/A
- Industries
- Refinery, Petrochemical, Power, General Industry
- Content Status
- reviewed
- Last Reviewed
- 2026-07-01
- Last Updated
- 2026-07-01
- Verified By
- Engineering Reviewer
- Official Link
- N/A
This paraphrased summary is a discovery aid. Do not reproduce or substitute it for the copyrighted official publication or jurisdictional requirements.