TAPPI T 231 (cm) — Zero-span breaking strength of pulp (dry zero-span tensile)
TAPPI T 231 is the test method for measuring the dry zero-span tensile strength of a randomly oriented pulp fiber specimen, an indicator of intrinsic fiber strength. To match a setup to this test, talk with our team.
What TAPPI T231 Covers
Zero-span tensile clamps a pulp specimen with effectively no distance between the jaws, so the result reflects the strength of the fibers themselves rather than fiber bonding. It is used to judge pulp quality and refining effects.
How the Test Is Run
A pulp handsheet or specimen is clamped at zero span and pulled to failure, and the breaking force gives the zero-span tensile strength. Consistent clamping pressure and specimen preparation control the result.
Reading the Designation
Cited as TAPPI T 231 with its revision year. Confirm the edition and conditioning requirements.
Preparing Specimens
Uniform specimens and controlled conditioning are essential for repeatable zero-span results. To set up zero-span tensile testing, request a quote.
TensileMill CNC products for TAPPI T231
Our specimen-preparation systems and testing equipment compatible with TAPPI T231.
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
TensileTurn CNC MINI – Compact Round Tensile Specimen Preparation Machine
MINI – Compact Round Tensile Specimen Preparation
Set up TAPPI T231 testing with TensileMill CNC
Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.