| Project Overview

Hardness testing is one of the important indicators for inspecting the properties of materials. It is also one of the fastest and most economical methods. Hardness testing can reflect the differences in chemical composition, organizational structure, and processing technology of materials. It is often used as a monitoring means in various industries.

Classification:

Rockwell hardness, Vickers hardness, micro-Vickers hardness, Brinell hardness, Shore hardness, nano-indentation hardness, Shao's hardness, etc.

· Rockwell hardness

Introduction:

Rockwell hardness has no unit and is a dimensionless mechanical property index. Its most commonly used hardness scales are A, B, C, R, M, L, etc., usually denoted as HRA, HRB, HRC, etc. Its expression method is hardness data + hardness symbol, such as 50HRC.

Test standards:

ASTM E18, GB/T 230.1, ASTM D785, ISO 2039-2, GB/T 3398.2, etc.

· Vickers hardness

Introduction:

Vickers hardness is usually expressed as follows: 600HV30/20. The value before V is the hardness value, and the value after it is the test force. If the holding time of the test force is not the usual 10-15 seconds, the holding time also needs to be marked after the test force value. For example: 600HV30/20 - A test force of 30 kilogram-force is applied and held for 20 seconds, and the hardness value obtained is 600.

Test standards:

GB/T 4340.1, ISO 6507, ASTM E384, etc.

· Brinell hardness

Introduction:

The symbol of Brinell hardness is represented by HBS or HBW. It is applicable to cast iron, non-ferrous alloys, various annealed and quenched and tempered steels. It is not suitable for testing specimens or workpieces that are too hard, too small, too thin, or whose surfaces do not allow large indentations.

Test standards:

GB/T 231.1, ASTM E10

| MTT Advantages

1. Professional Team: A team of highly experienced testing engineers and technical experts.

2. Advanced Equipment: Equipped with internationally leading testing instruments to ensure accuracy and reliability of results.

3. Efficient Service: Rapidly respond to customer needs and provide one-stop, high-efficiency inspection services.

4. Authoritative Certification: The laboratory is certified by ISO/IEC 17025, ensuring that test reports have international credibility.