K80020 Constant Temperature Ductility Machine


Test Method
Measures the distance of elongation of a bitumen sample when a briquet specimen is pulled apart at a specified speed and temperature.

Features and Benefits
• Conforms to ASTM D113 and related specifications

• Constant temperature model with circulator

• Available force measuring adapter with digital indication


K80020 Constant Temperature Ductility Machine
Standard Ductility Testing Machine – Three-speed apparatus pulls briquets of bituminous materials apart at a uniform speed while immersing them in water. As many as three specimens at a time can be tested at speeds of 0.25, 1 or 5cm per minute. A synchronous direct motor drive unit maintains constant speed without vibration. Drive unit rides on a bronze lead screw mounted above the water level to prevent agitation of water and premature rupture of specimens. A traveling pointer indicates the position of the carriage against a linear centimeter scale on the trough. Elongation capacity is 150cm, with automatic carriage stop. Polished stainless steel trough has overflow connection. Equipped with bronze gears and solid brass components to prevent rusting.

Constant Temperature Model –
Similar to the standard Ductility Machine, but equipped with a solid state, thermostatically controlled bath and circulator to control temperature within 0.9F (0.5C) in the range of 35-90F (1.7-32.2C). Circulant water is directed through stainless steel tubes beneath a false bottom in the trough to provide efficient heat transfer. Supplied with three standard brass briquet molds and brass base plate. See K80040 for information on force measuring adapters and molds.

Conforms to: ASTM D113; D-4 Proposal P226; AASHTO T51; ANS A37.11; Federal Specification SS-R-406C; USDA Method 5 (BUL 12-16); DIN 52013

Testing Capacity
Standard ductility measurement: 3 samples
Force ductility measurement: 2 samples

Included Accessories
Standard Mold (3)
Base Plate

Dimensions lxwxh,in.(cm)
Test unit (trough): 74x11.75x6.5 (188x30x17)
Circulator unit*: 10x9x12.5 (25x23x32)
*Constant Temperature Model only

Shipping Information
Shipping Weight:
K80010/K80015: 200 lbs (907kg)
K80020/K80025: 430 lbs (195kg)

Ordering Information



Product Description

Electrical Requirements


Standard Ductility Testing Machine

115V 60Hz


Standard Ductility Testing Machine

220-240V 50Hz


Constant Temperature Ductility Machine

115V 60Hz


Constant Temperature Ductility Machine

220-240V 50Hz




Catalog Number

Product Description


Acrylic Cover
For trough of Constant Temperature Model


Standard Mold
Includes interlocking brass clips and sides, per ASTM D113 and related specifications


Base Plate (Holds 3 Ductility Molds)
Brass construction. Accomodates three standard or force measurement molds


ASTM 63F Thermometer
Range: 18 to 89F


ASTM 63C Thermometer
Range: -8 to +32C



When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.