ISO 8491 is the bend test method for evaluating the ability of full-section metallic tubes of circular cross-section to undergo bending. To match this to your program, talk with our team.
What ISO 8491 Covers
It bends a full-section tube around a former to assess ductility and reveal surface or weld defects, without cutting a flat specimen from the tube wall.
How the Test Is Run
A length of tube is bent around a former of specified radius to a set angle, then the outer surface, including any weld, is examined for cracks.
Why It Matters
Full-section tube bend testing checks the tube as it will be used; a fixture sized for the tube diameter and a correct former radius are needed.
Reading the Designation
Cited as ISO 8491 with its edition year. Confirm the edition and specimen or fixture requirements before finalizing setup. To configure a bend or flexural setup, request a quote.
Related Standards
EN 10232 is the European full-section tube bend method and ISO 7438 is the general metal bend method.
Request a Quote
Setting up full-section tube bend testing? Request a quote and our team will help you build a system matched to your tube diameter and former radius.
TensileMill CNC products for ISO 8491
Our specimen-preparation systems and testing equipment compatible with ISO 8491:
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Bending Fixtures for Standard 3-Point Flexural Testing
Bending fixtures for standard 3-point flexural testing
Build your ISO 8491 workflow with TensileMill CNC
From specimen preparation to the test itself, TensileMill CNC supports the full ISO 8491 testing chain. That typically means universal testing machines with three- and four-point bend fixtures. Share your material mix and throughput, and we will recommend a setup that fits ISO 8491.