One-Touch, Strain Gauge Extensometers
The SSG-H series of strain gauge extensometers are compliant with ISO, JIS, and ASTM tensile test standards for hard plastics and metal materials
Featuring a wide elongation measurement range with the ability to measure using small gauge lengths, these lightweight, clip-on strain gauge extensometers attach to both rod and flat plate specimens.
The extensometers consist of an elongation sensor and amplifier, and calibration using an extensometer calibrator enables the extensometer to be compliant with JIS and ISO Class 0.5 and ASTM Class B standards.
SSG-H series extensometers feature convenient one-step specimen attachment and removal.
1 µm Absolute Accuracy and 0.5% Relative Accuracy - Compliant with Plastic Tensile Test and Elastic Modulus Measurement Requirements of ISO 527, JIS K 7161, and ASTM D638
Plastic tensile test standards, represented by ISO 527, JIS K 7161, and ASTM D638, require highly accurate displacement measurements.
SSG-H series extensometers are compliant with the aforementioned plastic tensile testing standards and are used widely by plastics manufacturers, public testing institutions, and universities
ISO 527, JIS K 7161, and JIS K 7162 require:
- Extensometer elongation measurements with accuracy within ±1% of the measured value.
- Elastic modulus values based on a secant line or regression line between the two strain points of 0.0005 (0.05%) and 0.0025 (0.25%).
ASTM D638 requires:
- Tensile elasticity measurements with ASTM E83 Class B-2 accuracy (absolute accuracy of 10 m for a 50 mm gauge length and relative accuracy within 0.5%)
- Class C accuracy (absolute accuracy of 50 m for a 50 mm gauge length and relative accuracy within 1%) for elongation measurements after the yield point and less than 20% elongation
- Relative accuracy within 10% above 20% elongation
Satisfies Strain Control Requirements of ISO 6892 and JIS Z 2241
ISO 6892 and JIS Z 2241 detail test methods for determining the tensile strength of metallic materials. Included within these standards are two control methods for loading materials until they reach their yield point: a stress-rate controlled method and a constant strain-rate controlled method using an extensometer.
ISO 6891-1 defines the strain rate control method as Method A, where testing using this strain rate control method is expected to become increasingly common.
For strain-rate control testing according to ISO 6892 and JIS Z 2241, the SSG-H series extensometer is ideal.