Material compatibility test

Test Background

Coolant is in long-term contact with metals, seals, and non-metallic materials. Insufficient chemical compatibility may lead to corrosion, swelling, hardening, or precipitation, which is one of the most common failure causes for liquid cooling systems.

Test Introduction

The material compatibility test evaluates the long-term chemical stability of the coolant and the materials in contact with the system through metal compatibility testing, seal compatibility testing, and non-metallic compatibility testing.

Testing Objectives

Verify the corrosion rate of the coolant on metals such as copper, aluminum, and stainless steel

Evaluate the swelling and hardness changes of sealing materials (such as EPDM and fluororubber)

Detect the compatibility of non-metallic materials (such as nylon and PEEK)

Ensure that there are no corrosion products blocking the flow channels during long-term operation

Test Standards

ASTM D1384 Glassware Corrosion Test

ASTM D471 Rubber Swelling Test

ASTM D2570 Fluid compatibility test

YD/T 3982-2021 Requirements for material compatibility

Applicable Products/Fields

Suitable for coolant selection, material verification, and failure analysis of liquid cooling systems.

Test Content

Metal corrosion test: Immerse multiple metal test pieces to measure the corrosion rate

Seal swelling test: Changes in volume, hardness, and tensile strength

Non-metallic material test: Immersion test of nylon, PTFE, PEEK, etc.

Microscopic analysis: SEM observation of corrosion morphology

Project Advantages

Capable of testing multiple material combinations simultaneously

Analysis of corrosion products via ion chromatography

Provides material selection recommendations and compatibility rating

Laboratory Configuration

Constant-temperature immersion test chamber (multi-station)

Analytical balance (accuracy: 0.1mg)

Hardness tester/Universal material testing machine

Ion chromatograph/ICP-OES

Scanning Electron Microscope (SEM)

FAQ
Q: Why does the ethylene glycol solution corrode aluminum alloy? A: Ethylene glycol will oxidize to form acidic substances at high temperatures. Corrosion inhibitors need to be added to inhibit corrosion. The formulations of corrosion inhibitors from different brands vary greatly, and their compatibility needs to be verified.