Markal Heat Stik High Temperature Paint Stick – King Size White | Marks 400°F–1800°F | Hot Surface Marker for Steel, Billets & Slabs | Made in USA
The Markal® Heat Stik® High Temperature Paint Stick (King Size, SKU 84710) is engineered for marking extremely hot metal surfaces, delivering clear, permanent identification where ordinary chalk and markers fail. Designed to write directly on red-hot steel from 400°F to 1800°F (204°C to 982°C), this professional-grade paint stick produces bright white, highly visible marks that remain readable throughout steel production and handling.
Unlike competitive hot chalks, Heat Stik uses real paint technology that will not run, char, peel, crack, or discolor, even under extreme heat or when submerged in cold water baths. Its fast-drying formula ensures marks stay intact during handling, transport, and processing.
The king size format (3/4" diameter) provides extended writing life, making it ideal for steel mills, foundries, aluminum processing, forging, and heat-treat operations. Built for durability, reliability, and visibility, Markal Heat Stik is trusted worldwide for high-temperature industrial marking—and is proudly made in the USA.
Extreme Heat Marking: Writes directly on red-hot metal surfaces from 400°F to 1800°F (204°C to 982°C).
Bright White Visibility: Produces bold, high-contrast marks for easy identification in steel production.
Real Paint Formula: Will not run, char, flow, discolor, peel, or crack under extreme heat.
Outlasts Hot Chalk: Longer marking life than competitive hot chalks, reducing downtime and replacements.
Fast-Drying & Durable: Marks remain intact during handling and when immersed in cold water baths.
King Size Stick: Oversized 3/4" (19 mm) diameter x 4-5/8" length for extended use in demanding environments.
Industrial Grade Performance: Designed for continuous use in harsh production conditions.
Wide Hot Metal Applications: Ideal for billets, coils, slabs, bars, ingots, plates, rails, and beams.
Trusted Across Industries: Commonly used in steel mills, foundries, aluminum mills, forging, and heat treating.
Made in the USA: Manufactured to professional industrial standards for consistent quality.