258-L
258-L
  • 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

    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.

  • Low-Temperature Chamber

    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.

Sample Dimension Measuring Device

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.

View Details
Temperature -35℃ to 60℃ (Refrigeration System)
Main Unit Specifications ・Touchscreen operation
・Analog Scale included
・Electric hammer release
・Safety cover with interlock
Power Source AC 200V, 3-phase, 40A, 50/60Hz
Dimensions / Weight(Approx.) W1,100 × D1,160 × H1,760 mm/ 450 kg

Common Specifications

Standards JIS/ISO ASTM
Reference Standards JIS K 7111-1,ISO 179-1 JIS K 7110,ISO 180 ASTM D6110-10 ASTM D256-10
Testing Methods Charpy Impact Test Izod Impact Test Charpy Impact Test Izod Impact Test
Hammer Energy(J)*1 0.5, 1, 2, 4, 5 7.5, 15, 25*2 1, 2.75, 5.5, 11, 22 2.7-21.7
Anvil Spacer Required – – – –
Impact Velocity 2.9m/s(±10%) 3.8m/s(±10%) 3.5m/s(±10%) 3.46m/s 3.46m/s(3.5m/s)
Hammer Lift Angle 150°
Hammer Refer to the respective sections below for details.
Anvil Refer 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
Standard Potential Energy Impact Velocity Angle of Striking Edge Radius of Striking Edge
ISO/
JIS		 0.5J 2.9m/s(±10%) 30±1° 2.0±0.5mm
1J
2J
4J
5J
7.5J 3.8m/s(±10%)
15J
25J
ASTM 2.7-21.7J 3.46m/s 45±2° 3.17±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
Standard Potential Energy Impact Velocity Radius of Striking Edge
ISO/
JIS		 1J 3.5m/s(±10%) 0.8±0.2mm
2.75J
5.5J
11J
22J
ASTM 2.7-21.7J 3.46m/s(3.5m/s) 0.8±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
Symbol Parameter ISO/JIS ASTM
ー Parallelism between long axis of test sample and reference plane ±4/1000 ー
R2 Radius of curvature of anvils 1±0.1 mm 3.17±0.12 mm
θ2 Angle of taper of anvils 10±1 ° 0
θ3 Angle of slope of anvils 5±1 ° 0
ー Angle of supports and anvils 90±0.1 ° 90°
L Span between sample supports 62±(0.5/0) mm 101.6±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
Symbol Parameter ISO/JIS ASTM
ー Sample angle 90±2 ° ー
ー Parallelism with face of reference sample ±0.025 mm ー
P2 Horizontality of top surface of vise ±3/1000 ー
θ2 Angle between support block and top surface of vise 90±0.5 ° ー
P3 Parallelism in horizontal and vertical direction ±0.05 mm ー
R2 Top edge radius of support 0.2±0.1 mm 0.25±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.

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.

Additional Hammer Weights

Add weights to the hammer to support two capacities.

Hammer Braking

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.

Mini Printer

Print test results quickly and efficiently.

CSV Download Tool

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For over 70 years, Yasuda Seiki’s testing machines have supported quality control and research & development across various industries, meeting the diverse needs of our clients.

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