IMPACT TESTER (WITH REFRIGERATING MACHINE)

No.258-L
IMPACT TESTER (WITH REFRIGERATING MACHINE)

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Overview of IMPACT TESTER(WITH REFRIGERATING MACHINE)

This is a pendulum impact tester designed to evaluate the impact resistance and toughness of plastics. Equipped with a low-temperature chamber, this model enables Charpy and Izod impact testings under controlled temperature environments ranging from -35°C to 60°C. The chamber features a unique double-layer door structure, which allows the operator to mount test samples from the outside while keeping the inner door closed. This minimizes temperature fluctuations inside the chamber to the absolute limit, ensuring high-precision environmental testing.

Charpy and Izod Impact Tests

Features

Low-Temperature Testing

Low-Temperature Testing

Two Types of Low-Temperature Impact Testers

Impact testing can also be performed in low-temperature environments. The No.258-L allows testing between -35℃ to 60℃, while the No.258-UTL supports testing as low as-50℃ to 60℃. Please select the model that suits your desired testing temperature.

Touchscreen Operation

Basic Operation and Result Registration Available

Basic operations are performed using the touchscreen. After the test, the impact value is automatically calculated based on the hammer lift-up angle.
The test results can also be checked in the test results screen.

Touchscreen Operation
Screenshot

Accurate Testing

Testing Inside the Low-Temperature Chamber

Impact testing is performed inside the low-temperature chamber, ensuring accurate testing conditions without any change in the test environment. Testing inside the chamber also prevents sample scatter, making sample collection easier.

Input Tools for Increased Efficiency

Input Tools for Increased Efficiency

We offer three types of input tools that simplify sample dimension measurement. These tools significantly reduce measurement time and improve testing efficiency.

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Specification

Temperature-35℃–60℃ (refrigeration control)
Main Unit Specifications・Touchscreen operation
・Analog Scale included
・Electric hammer release
・Safety cover with interlock
Safety DevicesSafety cover with interlock switches
Other specsRefer to the specifications of No.258-D/PC
Power SourceAC 200 V 3-phase 40 A 50/60 Hz
Dimensions and Weight(Approx.)W1,100×D1,160×H1,760 mm, 450 kg

Common specifications

StandardsJIS/ISOASTM
Reference StandardsJIS K 7111-1,ISO 179-1JIS K 7110,ISO 180ASTM D6110-10ASTM D256
Test MethodCharpy Impact TestIzod Impact TestCharpy Impact TestIzod Impact Test
Hammer Energy Capacity (J)*10.5, 1, 2, 4, 57.5, 15, 25*21, 2.75, 5.5, 11, 222.7 and above (past results: 0.5, 1, 2, 4, 5, 7.5, 15, 25)2.7 to 21.7 (past results: 1, 2.75, 5.5, 11, 22)
Anvil Lift for CharpyRequired––––
Impact Velocity2.9m/s3.8m/s3.5m/s3.46m/s3.5m/s
Hammer Release Angle150°
HammerRefer to the respective sections below for details.
AnvilRefer to the respective sections below for details.
*1 Hammer capacities other than the standard options can also be manufactured. Please inquire if hammers in kgf·cm units are required.
*2 Hammers with a capacity of 50 J are not available.

Hammer

Charpy Hammers

Charpy Hammers
StandardPotential EnergyImpact VelocityAngle of Striking EdgeRadius of Striking Edge
ISO/JIS0.5J2.9m/s30±1°R2±0.5mm
1J
2J
4J
5J
7.5J3.8m/s
15J
25J
ASTM2.7 and above (past results: 0.5, 1, 2, 4, 5, 7.5, 15, 25)3.46m/sR3.17±0.12mm

The characteristics of the Charpy hammers differ between the test standards as shown in the table above. In ISO and JIS standards, the hammer length changes according to the impact velocity. Therefore, the same hammer cannot be used to create, for example, a 4 J impact and 7.5 J impact. Two different hammers must be prepared.

Izod Hammers

Izod Hammers
StandardPotential EnergyImpact VelocityRadius of Striking Edge
ISO/
JIS		1J3.5m/sR0.8±0.2mm
2.75J
5.5J
11J
22J
ASTM2.7-21.7J3.5m/sR0.8±0.2mm

The same hammer is sometimes used between ISO (or JIS) and ASTM impact tests as the details of the hammers specified in the two standards are similar. However, to be precise, the shape of the striking edge differs between the standards as shown in the above image. Therefore, to conform to the test standards, hammers that match the test standard shall be used.

Anvil

Charpy Anvil

Charpy Anvil
SymbolParameterISO/JISASTM
ーParallelism between long axis of test sample and reference plane±4/1000ー
R2Radius of curvature of anvils1±0.1 mm3.17±0.12 mm
θ2Angle of taper of anvils10±1 °0
θ3Angle of slope of anvils5±1 °0
ーAngle of supports and anvils90±0.1 °90°
LSpan between sample supports62±(0.5/0) mm101.6±0.5 mm

The shape of the anvil differs between ISO (or JIS) and ASTM standards. Therefore, to perform both ISO and ASTM standardized tests, two different anvils shall be prepared.

Izod Anvil

Izod Anvil
SymbolParameterJIS/ISOASTM
ーSample angle90±2 °ー
ーParallelism with face of reference sample±0.025 mmー
P2Horizontality of top surface of vise±3/1000ー
θ2Angle between support block and top surface of vise90±0.5 °ー
P3Parallelism in horizontal and vertical direction±0.05 mmー
R2Top edge radius of support0.2±0.1 mm0.25±0.12 mm

In strict terms the anvil shapes differ between ISO (JIS) and ASTM standards, but are sometimes used mutually as the differences are minor.

Options of IMPACT TESTER (WITH REFRIGERATING MACHINE)

Input Tools (Micrometer/Digital Gauge Type)

Send measured dimensions to the main unit at the press of a button, reducing the time and effort required to input dimensions manually.
*Compatible with No.258-D and No.258-L.

Hammer Weight Set

Add weights to the hammer to support two capacities.

Hammer Brake

By pressing a button, the hammer can be stopped with the brake engaged. This ensures safe hammer stoppage after impact without the risk of hand contact.

CSV File Output

Motorized Sample Clamping

* Available for Izod only.

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