DIN 50138 is a legacy German ring tensile test for metallic tubes. It has been largely superseded by the current harmonized ring tensile methods, so new work references those instead. To match a setup to this test, talk with our team.
What DIN 50138 Covers
The method evaluates transverse tube properties by straining a ring cut from the tube until fracture, revealing wall defects and ductility. Its approach parallels the current harmonized ring tensile standards.
Current Replacement
For new work, use the current ring tensile methods ISO 8496 and EN 10237. Legacy references to DIN 50138 map onto these with documented equivalence.
Reading the Designation
Cited as DIN 50138 with its year. Confirm whether the controlling document expects a current ISO or EN ring method.
Related Standards
ISO 8496 and EN 10237 are the current tube ring tensile methods.
Request a Quote
Modernizing a DIN 50138 requirement? Request a quote and our team will help you build a system matched to your tube size and fixturing.
TensileMill CNC products for DIN 50138
Our specimen-preparation systems and testing equipment compatible with DIN 50138:
TensileMill CNC MICRO – Precision Flat Tensile & Impact Micro Machine
MICRO – Precision Flat Tensile & Impact Sample Preparation
TensileTurn CNC – Industrial Upgrade – Round Tensile Sample Preparation Machine
Industrial Upgrade – Round Tensile Sample Preparation
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Equip your lab for DIN 50138 with TensileMill CNC
From specimen preparation to the test itself, TensileMill CNC supports the full DIN 50138 testing chain. Our range includes universal testing machines, wedge or pneumatic grips, and flat and round specimen-preparation systems. Request a quote and our team will help you configure a system for DIN 50138.