GB/T 231.2 — Brinell hardness testing machine verification & calibration
GB/T 231.2 is the Chinese national standard for verifying and calibrating Brinell hardness testing machines used to determine Brinell hardness. It confirms machine performance so that Brinell results stay traceable and comparable. To verify a Brinell tester or specify one, talk with our team.
What GB/T 231.2 Covers
The standard checks the test forces, the ball indenter, and the optical measuring system used to read the indentation diameter, along with the overall machine performance confirmed against certified reference blocks.
Why It Matters
Brinell testing is common on castings, forgings, and larger sections, where a reliable machine is essential for correct acceptance. A current GB/T 231.2 verification is the record that keeps Brinell data defensible.
Reading the Designation
Cited as GB/T 231.2-YYYY. Confirm the edition before setting verification intervals.
Direct and Indirect Checks
Machine verification uses two methods together:
- Direct: checks of applied forces, indenter condition, and the measuring system.
- Indirect: testing certified Brinell reference blocks and comparing readings against their certified values.
TensileMill CNC products for GB/T 231.2
Our specimen-preparation systems and testing equipment compatible with GB/T 231.2.
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Electro Mechanical Universal Testing System 50kN / 1000kN with Precision Load Cell
Electro-Mechanical UTM · 50 kN / 1000 kN with Precision Load Cell
Servo-Hydraulic Universal Testing Machine (300 kN – 3000 kN)
Servo-Hydraulic UTM · 300 kN – 3000 kN
Precision Alignment Device (NADCAP-Ready Precision Fixture)
NADCAP-Ready Precision Alignment Fixture
Set up GB/T 231.2 testing with TensileMill CNC
Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.