IEC 60811-1-2 describes thermal ageing methods used to evaluate how non-metallic insulating and sheathing compounds for electric cables hold up after exposure to elevated temperature.
Labs and cable manufacturers use this document to run controlled ageing in an oven (and, where specified, an air bomb) so they can compare material properties before and after ageing as part of qualification, type testing, and ongoing material verification. If you need help matching ageing conditions and follow-on measurements to your cited cable or compound requirement, talk with our team.
IEC 60811-1-2: Common test methods for insulating and sheathing materials of electric cables — Thermal ageing methods
This standard is a test-method document focused on thermal ageing procedures for non-metallic cable insulation and sheath materials. It is part of the IEC 60811 test-method series used across cable and cable-material evaluation.
It is commonly referenced when a product, material specification, or cable construction standard requires ageing at defined conditions prior to checking performance (often by comparing selected properties before and after ageing).
Quick Definition
What it is: A set of thermal ageing methods (including ageing in an air oven and ageing in an air bomb) for insulating and sheathing compounds used in electric cables.
What it helps you do: Expose specimens to controlled heat ageing so post-ageing results can be compared to pre-ageing values using the applicable measurement methods required by the cited cable/material requirement.
What it is not: A complete cable product specification or a single pass/fail requirement by itself; acceptance criteria are typically defined in the product or material specification that references this ageing method.
What This Standard Covers
IEC 60811-1-2 covers practical ageing procedures for cable insulating and sheathing materials, including general rules that support repeatable ageing exposure and consistent reporting.
Thermal ageing methods included: Ageing in an air oven and ageing in an air bomb.
General testing elements addressed: Items such as applicability, pre-conditioning, test temperature, and how results are handled (for example, using a median value concept) to support consistent evaluation.
Why This Standard Matters in Testing
Thermal ageing is frequently used to screen material stability and help demonstrate that an insulating or sheathing compound can maintain required performance after heat exposure expected in service, storage, or processing.
Because ageing conditions (method, temperature, duration, and specimen handling) can significantly influence outcomes, aligning your chamber/oven capability and ageing setup to the cited edition is important for comparable, defensible results.
Common Materials, Product Types, or Applications Covered
This standard is used for non-metallic insulating and sheathing materials applied to electric cables. In practice it is often applied in cable-material labs and manufacturing QA for polymeric compounds used as insulation and/or jacket/sheath layers.
Common use cases: Material qualification, type testing programs, change control (compound or supplier changes), and periodic verification testing where a referenced cable or material requirement calls up IEC 60811 thermal ageing.
Common Test or Verification Workflow
IEC 60811-1-2 is typically one step in a larger verification plan. The plan is usually driven by the cable standard, customer specification, or compound requirement that cites this method and defines what property must be checked and what constitutes a passing result.
Common workflow: Prepare specimens → pre-condition as required → run thermal ageing exposure (air oven or air bomb, as specified) → condition specimens after ageing as required → perform the required before/after comparisons using the applicable measurement method(s) referenced by the controlling specification → report ageing conditions and results.
Equipment Commonly Used for This Standard
The primary equipment need is controlled thermal ageing hardware capable of maintaining stable, uniform conditions appropriate to the chosen method.
Common equipment for ageing: Temperature-controlled air-circulating ageing ovens with appropriate ventilation/airflow management, specimen racks/fixtures suitable for the material form, and calibrated temperature measurement.
When air-bomb ageing is specified: An air bomb (pressure vessel) system designed for elevated-temperature ageing with appropriate controls and safety features.
Common follow-on test equipment (driven by the referencing requirement): Mechanical test systems (often a universal testing machine with appropriate grips/extensometry) or other property-measurement equipment used to compare pre- and post-ageing results, as required by the cited product/material specification.
If you are selecting an oven size, temperature range, control features, or an air-bomb ageing setup for a cable-material workflow, you can request a detailed quote with the key performance requirements and chamber configuration matched to your lab throughput.
How to Read This Designation or Revision
Designation: “IEC 60811-1-2” identifies Part 1-2 of the IEC 60811 test-method series and corresponds to the thermal ageing methods section.
Revision sensitivity: Always match the exact edition/year (and any amendments/corrigenda) cited in your procurement document or cable/material requirement, because method details and referenced companion methods can vary by edition.
Document lifecycle note: This part has been superseded in the IEC catalog by later IEC 60811 series parts (for example, the IEC 60811-400 series). When a contract or product standard still calls out IEC 60811-1-2, testing should follow the cited edition unless your controlling document allows substitution.
Related Standards, Methods, or Frameworks
IEC 60811-1-2 is commonly used alongside other IEC 60811 methods that define how properties are measured before and after ageing. The controlling cable or compound specification typically determines which additional IEC 60811 method(s) apply and what acceptance criteria must be met.
Practical tip: When reviewing a requirement, confirm whether it calls for oven ageing, air-bomb ageing, or both, and which post-ageing property checks are required, since those drive both the ageing equipment and the follow-on measurement setup.
Talk with us about IEC 60811 thermal ageing setups
For help aligning your ageing method (oven vs. air bomb), temperature capability, specimen handling, and follow-on measurements to the exact IEC 60811 edition cited in your cable or material requirement, contact our team to review your workflow and equipment needs.
