Markal 81921 Solid Paint Marker Yellow Heat Treating

Product Description

The MARKAL 81921 is a solid oil-base paint marker designed for marking steel, iron, and aluminum during high-temperature processes such as annealing and heat treating. The round tip delivers a consistent mark on metal surfaces, even in shop environments where liquid markers fail or smear. The solid paint formula bonds to bare metal and leaves a visible yellow line that survives handling prior to heat processing. This marker is a single-piece consumable used by heat-treat technicians, weld inspectors, and fabrication shop personnel who need a reliable, heat-process-compatible marking solution.

This marker is suited for ferrous and non-ferrous metal fabrication environments, including job shops, heat-treat facilities, forge operations, and structural steel fabrication floors. It applies directly to steel, iron, and aluminum workpieces before they enter furnaces, induction coils, or other heat-treating equipment. The compact solid-stick format makes it easy to store and carry on the shop floor.

Key Features

• Solid oil-base paint formula designed for pre-heat-treat and annealing marking applications
• Round tip for consistent line deposit on flat and curved metal surfaces
• Yellow color provides high contrast against bare steel, iron, and aluminum
• Compatible with steel, iron, and aluminum substrates
• Compact single-stick format for easy handling and storage

Compatibility

Designed for use on steel, iron, and aluminum surfaces in annealing and heat-treating applications.

Installation Notes

No installation is required for this consumable marking product. Apply the marker directly to the workpiece surface before heat processing. Ensure the surface is reasonably free of heavy grease or scale for best mark adhesion. Follow all applicable shop safety procedures when working near furnaces or high-temperature equipment.