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ISO 2062 Textiles — Yarns from packages — Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester

How strong a single end of yarn is, and how far it stretches before it breaks, measured on a machine that pulls at a constant rate.

Number
ISO 2062
Committee
ISO/TC 38
Status
active

Equivalents

Body Number Equivalence Deviation
ASTM ASTM D2256 NEQ Parallel standard, not an adoption of the ISO text under ISO/IEC Guide 21. Measures the same property by a comparable method; results should not be assumed interchangeable. Confirm which standard the buyer specifies.

Verification coverage

Checked against ASTM. Not yet checked: AATCC, BIS, SAC, JIS, EN, DIN — an absent row here does not mean no equivalent exists.

What this standard is for

Where it is used

Yarn purchase specifications, and troubleshooting when a yarn is breaking in weaving or knitting rather than on the test bench.

Why it matters

Yarn that fails in the machine costs far more than yarn that fails a test: stoppages, seconds, and lost machine hours. Strength on the certificate is what a spinner is paid for, so the method behind the number is contractual.

What to watch for

Gauge length and extension rate change the result, so two certificates are only comparable if both were run to the same parameters. A CRE result is not interchangeable with an older CRT or CRL one.

Calculators that implement this

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Last verified
Verified by
Textile School
Next review
2026-11-20 (active)

Metadata only — purchase the standard from the issuing body.

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