ISO 180:2019
Thermal insulating products for building equipment and industrial installations — Determination of maximum service temperature for preformed pipe insulation

Standard No.

ISO 180:2019

Release Date

2019

Published By

International Organization for Standardization (ISO)

Status

Be replaced 2023-06

Replace By

ISO 180:2023

Latest

ISO 180:2023

Introduction

Analysis of the core content of the standard

Version comparison dimensions	ISO 180:2000	ISO 180:2019
Normative references	Not updated	Five new standards including ISO 10724-1 were added
Specimen preparation requirements	Long fiber materials are not specified	6.1.3 Long fiber reinforced materials chapter is added
Test parameter accuracy	Measuring tool accuracy is not specified	Clause 5.2 specifies that the measurement accuracy must reach 0.02mm

---

Detailed explanation of key test parameters

The standard defines two notch types: Type A (r_N=0.25±0.05mm) and Type B (r_N=1±0.05mm). Type A notch is preferred. When it is necessary to evaluate the notch sensitivity of the material, both notch specimens should be tested at the same time.

The test equipment must meet the requirements of ISO 13802, with key verification:

• Pendulum impact velocity: 3.5m/s±10%
• Energy absorption range: 10%-80% available energy
• Fixture radius: should meet the requirements of the standard diagram

---

Specimen preparation specifications

Preparation requirements for different types of materials:

1. Thermoplastic molding compounds: Injection molding according to ISO 294-1 or compression molding according to ISO 293
2. Plate: Machining according to ISO 2818, preferably type A notch
3. Long fiber composite materials: Test plates must be prepared according to ISO 1268

The standard particularly emphasizes that the specimen should be free of distortion, scratches, dents and other defects on the surface, and the dimensional tolerance should be controlled within ±0.2mm.

---

Test implementation recommendations

Environmental control

Unless otherwise specified, the specimen should be conditioned at 23±2℃, 50±5%RH for ≥16 hours (notched specimens are timed after the notch is opened)

Data validity judgment

When the coefficient of variation is <5%, the number of specimens can be reduced to 5, otherwise 10 specimens are required. The test results should be grouped and counted:

• C-type fracture (complete fracture)
• H-type fracture (hinge fracture)
• P-type fracture (partial fracture)
• N-type (unbroken)

---

Technology evolution analysis

Main updates of the 2019 version:

• Introduction of Thermotropic liquid crystal polymer test requirements (Clause 1.3)
• Reinforcement of test specifications for long fiber reinforced materials
• Added reference ASTM E691-11 as the basis for accuracy verification
• Updated test report element requirements (Chapter 10)

The standard clearly states that it is not applicable to foamed materials and sandwich structures, and notched specimens are not recommended for long fiber reinforced composites.

ISO 180:2019 Referenced Document

• ISO 10724-1 Plastics - Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) - Part 1: General principles and moulding of multipurpose test specimens
• ISO 13802 Plastics — Verification of pendulum impact-testing machines — Charpy, Izod and tensile impact-testing
• ISO 20753 Plastics*， 2023-11-01 Update
• ISO 2602 Statistical interpretation of test results; estimation of the mean; confidence interval
• ISO 2818 Plastics — Preparation of test specimens by machining
• ISO 291 Plastics - Standard atmospheres for conditioning and testing
• ISO 293 Plastics — Compression moulding of test specimens of thermoplastic materials*， 2023-02-21 Update
• ISO 294-1 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens
• ISO 295 Plastics - Compression moulding of test specimens of thermosetting materials

ISO 180:2019 history

• 2023 ISO 180:2023 Plastics. Determination of Izod impact strength
• 2019 ISO 180:2019 Thermal insulating products for building equipment and industrial installations — Determination of maximum service temperature for preformed pipe insulation
• 2013 ISO 180:2000/Amd 2:2013 Plastics - Determination of Izod impact strength - Amendment 2: Precision data
• 2006 ISO 180:2000/Amd 1:2006 Plastics - Determination of Izod impact strength; Amendment 1
• 2000 ISO 180:2000 Plastics - Determination of Izod impact strength
• 1995 ISO 180:1993/Cor 1:1995 Plastics - Determination of Izod impact strength; Technical Corrigendum 1
• 1993 ISO 180:1993 Plastics; determination of Izod impact strength
• 1982 ISO 180:1982 Plastics — Determination of Izod impact strength of rigid materials

Standard and Specification