SC46-5 - Smith SC46 Size 5 Heavy Duty Propane Cutting Tip

Miller Smith SC46-5 Rugged Duty Cutting Tip Overview

The Miller Smith SC46-5 is a specialized industrial cutting tip belonging to the SC46 Rugged Duty series. Engineered for high-performance cutting operations, this Size 5 tip is calibrated specifically for alternative fuel gases, including Propane and Natural Gas. It offers a substantial cutting capacity, capable of severing steel sections up to 8 inches (203mm) thick. This makes it an essential consumable for heavy industrial sectors such as demolition, scrap processing, and structural steel fabrication where deep cutting capabilities are required.

Unlike standard general-purpose tips, the SC46 series is manufactured with a one-piece construction designed to endure abusive environments. The internal geometry is optimized to maintain a stable preheat flame even when subjected to the turbulence and contaminants often found when cutting dirty, rusted, or heavily painted metals. The tip's exterior and face are built to resist the adhesion of molten slag and spatter, a critical feature when working in close proximity to the workpiece or in confined spaces where reflected heat can rapidly degrade standard copper tips.

Compatibility is a key strength of the SC46-5. It is designed to fit a broad range of Smith Equipment torches, including the DG200 and SC200 series cutting attachments, as well as all Smith SC and DG series hand torches. It is also compatible with Smith machine cutting torches, providing versatility for both manual and mechanized cutting operations. The tip utilizes Smith's renowned seating technology to ensure a leak-proof seal and optimal gas mixing for safety and performance.

Technically, the use of Propane or Natural Gas with this tip requires specific preheat port designs to compensate for the lower flame temperature compared to acetylene. The SC46-5 features heavy preheat splines that deliver the necessary BTU output to rapidly bring 8-inch thick steel to kindling temperature, ensuring cut initiation is fast and the cut progression remains stable throughout the operation. This tip represents the intersection of durability and power for the professional fabricator.