Stick Electrodes Lincoln Electric KRYO 1

Lincoln Electric Kryo® 1 Covered Electrode – Low-Alloy Basic Electrode for Low-Temperature Applications

The Kryo® 1 from Lincoln Electric is a low-alloy, basic covered electrode for demanding welding tasks on steel structures where high mechanical properties and very good impact toughness are required, even at low temperatures. It is particularly suitable for applications where the weld metal must remain reliably load-bearing even under cold stress.

Due to its excellent mechanical properties, very low hydrogen content, and suitability for both AC and DC current, the Kryo® 1 is a high-performance electrode for professional use in steel construction, plant engineering, tank construction, offshore applications, and other safety-critical uses.

Properties

The Kryo® 1 impresses with very good mechanical properties and high toughness down to -60 °C. In addition, it offers good CTOD properties down to -10 °C and extremely low hydrogen content. The deposition efficiency is approximately 110–120 %, enabling economical processing.

The electrode can be welded with both AC and DC current and is suitable for all welding positions, except vertical down.

Technical Advantages

• Very good impact toughness down to -60 °C

• Good CTOD properties down to -10 °C

• Extremely low diffusible hydrogen content

• Deposition efficiency approx. 110–120 %

• Weldable with AC and DC

• Suitable for all positions, except vertical down

• Suitable for high-quality welded joints on low-alloy steels

• Approvals by ABS, LR, BV, DNV, TÜV, and DB, among others

Classification

The Kryo® 1 is classified according to the following standards:

AWS A5.5: E7018-G-H4R
EN ISO 2560-A: E 50 6 Mn1Ni B 32 H5

Current Type and Polarity

The electrode can be welded with the following current types:

AC / DC (+/-)

This makes the Kryo® 1 flexible and usable with both AC and DC welding machines.

Welding Positions

The Kryo® 1 is suitable for all welding positions, with the exception of vertical down.

Typical Chemical Analysis of Undiluted Weld Metal

Mechanical Properties of Undiluted Weld Metal

Typical values in the as-welded condition:

Typical values after stress relieving at 580 °C / 15 h:

Current Ranges

Available Versions

Typical Areas of Application

The Kryo® 1 is particularly suitable for welding tasks where high demands are placed on strength, toughness, and cold resistance. Typical areas of application include:

• Steel construction and heavy steel construction

• Plant engineering

• Pressure vessel and pipeline construction

• Offshore and shipbuilding applications

• Structures subjected to low temperatures

• Components with high demands on impact toughness

• Welded joints on low-alloy steels

Application Note

The mechanical values specified are based on weld samples produced and tested according to standards. Actual results in practice may vary depending on the base material, joint preparation, welding parameters, heat input, and manufacturing conditions. For safety-critical applications, the suitability of the filler material should be confirmed by appropriate procedure tests.

Conclusion

The Lincoln Electric Kryo® 1 is a high-quality basic covered electrode for low-alloy steels with excellent low-temperature properties. Thanks to its very low hydrogen content, high impact toughness down to -60 °C, good CTOD values, and flexible usability with AC/DC, it is ideal for demanding welding tasks in professional steel, plant, and tank construction.