ISO 148-3 — Charpy V-notch reference test pieces for pendulum impact machine verification
ISO 148-3 covers the certified reference test pieces used to indirectly verify Charpy pendulum impact machines. These reference specimens carry a certified absorbed-energy value that a machine must reproduce within tolerance. To source reference pieces or plan indirect verification, talk with our team.
Why It Matters
Reference pieces are the practical, repeatable check that keeps a Charpy machine in tolerance between full verifications, which protects the comparability of impact results across labs and over time.
Reading the Designation
Cited as ISO 148-3:YYYY. Confirm the edition, since certification and handling requirements can change.
What ISO 148-3 Defines
The standard sets out how Charpy reference test pieces are prepared, certified, and used. Each set is certified at a defined energy level, and a machine is checked by breaking the pieces and comparing measured energy against the certified value.
How Reference Pieces Are Used
Indirect verification with reference pieces complements the direct measurement of machine geometry:
- Select reference pieces at an energy level near where the machine is used.
- Break the pieces under normal test conditions and record absorbed energy.
- Compare the mean and scatter against the certified value and permitted tolerance.
TensileMill CNC products for ISO 148-3
Our specimen-preparation systems and testing equipment compatible with ISO 148-3.
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 ISO 148-3 testing with TensileMill CNC
Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.