S541044-033 - Hobart Hardalloy 148 Hardfacing Stick Electrode 1/8in 10lb Can

Hobart Hardalloy 148 Technical Overview

The Hobart Hardalloy 148 is a specialized Shielded Metal Arc Welding (SMAW) electrode designed for hardfacing applications where components are subjected to a combination of light abrasion and significant impact. The electrode deposits a high carbon-chromium austenitic plus carbide alloy steel. This specific metallurgical structure provides a robust overlay that is exceptionally capable of withstanding metal-to-metal frictional wear, making it a critical consumable for the maintenance and repair of heavy industrial machinery.

One of the defining technical characteristics of the Hardalloy 148 is its thermal stability. The deposited weld metal retains its hardness and wear-resistant properties at elevated temperatures up to 1200 degrees Fahrenheit (649 degrees Celsius). This high-temperature performance makes it suitable for equipment operating in high-heat environments where standard hardfacing alloys might soften and fail. The electrode is engineered for use in the Flat and Horizontal welding positions, ensuring optimal bead profile and deposit quality.

Operational versatility is a key feature of this product, as it functions effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC). This flexibility allows for deployment across various power sources found in field and shop environments. The deposition characteristics are controlled to allow for a maximum buildup of three layers; exceeding this limit is not recommended due to the specific stress characteristics of the austenitic-carbide matrix. The product is supplied in a 10-pound hermetically sealed can, ensuring the flux coating remains dry and free from hydrogen-inducing moisture, which is critical for maintaining the integrity of the hardfacing deposit.

The alloy composition is specifically formulated to address wear modes found in the construction and mining industries. By balancing the toughness of the austenitic matrix with the hardness of the chromium carbides, Hobart has created an electrode that resists the spalling and cracking often associated with pure abrasion-resistant alloys when they are subjected to impact loading.