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Series 635 Extensometers

The Series 635 Extensometers are ideal for measuring strain in tension applications. They are optimized for monotonic testing with reliability, durability, and affordability in mind.

  • Tension
  • Metals
  • Plastics
  • Polymers
  • Rubber
  • Composites
  • ASTM A48-A48M
  • ASTM E517
  • ASTM E646
  • ASTM E8-E8M
  • ISO 10113
  • ISO 10275
  • ISO 6892-1
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TECHNICAL OVERVIEW

Monotonic Metric Gage Length Extensometers for Tensile Testing

MTS Fundamental Series 635 Extensometers are ideal for measuring strain in tension applications. The design is optimized for monotonic testing with reliability, durability an affordability in mind.

Like all MTS extensometers, the 635 series feature our unique design of proprietary strain gaged elements using a special heat treated alloy. They are designed with a ground profile, dual-member flexure that provides for very low activation force with excellent strength. The design assures true center-point bending resulting in low hysteresis and exceptionally accurate strain readings.

Mechanical stops on these extensometers make it possible to leave them attached through specimen failure without damaging the unit. They also feature a zero-set pin for accurate and consistent determination of the initial gage length.

MTS Fundamental Series 635 Extensometers come standard with hardened, replaceable knife edges for flat and round specimens. These units come standard with patented MTS Quick-attach springs which make attachment to specimens fast and easy. Each extensometer is packed in a storage case containing the instrument and attached cable.

  • Ideal for measuring strain in tension applications
  • Optimized for monotonic testing with reliability, durability, and affordability in mind
  • May be left in place through specimen failure
  • All part numbers include hardened knife edges and quick attachment kits for flat and round specimens
  • Only available in metric gage lengths
  • Designed to meet requirements for calibration according to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

MODEL

NUMBER

GAGE

LENGTH

MAXIMUM TRAVEL

MAXIMUM STRAIN

 

HEIGHT

(from bottom to top)

LENGTH

(from knife edge to back of housing)

TEMPERATURE

MIN/MAX

PART NUMBER

635.25F-05

25 mm

+ 5 mm

+20%

39.6 mm (1.1 in)

77.5 mm (3.1 in)

4°C / 50°C

057-863-506

635.50F-05

50 mm

+ 5 mm

+10%

59.2 mm (2.3 in)

77.5 mm (3.1 in)

4°C / 50°C

057-863-505

635.50F-10

50 mm

+10 mm

+20%

61.5 mm (2.4 in)

77.5 mm (3.1 in)

4°C / 50°C

057-863-504

635.50F-25

50 mm

+25 mm

+50%

69.1 mm (2.7 in)

153.7 mm (6.1 in)

4°C / 50°C

057-863-503

635.100F-10

100 mm

+10 mm

+10%

111.8 mm (4.4 in)

77.5 mm (3.1 in)

4°C / 50°C

057-863-502

635.100F-25

100 mm

+25 mm

+25%

111.8 mm (4.7 in)

153.7 mm (6.1 in)

4°C / 50°C

057-863-501