Arro-Mark developed the Mighty Marker High-Temperature line for marking tasks that occur before, during, or after exposure to extreme heat. These markers are commonly used where parts move through furnaces, heat-treat ovens, paint booths, or welding operations and still require clear, permanent identification. The intent is straightforward—maintain legibility when standard paint markers burn off, discolor, or disappear.

High-temperature marking becomes critical once parts exceed the limits of conventional inks. At elevated temperatures, pigments can carbonize, carriers can evaporate, and marks can fade or flake. Arro-Mark addresses this by using temperature-stable pigments and binders that are designed to withstand sustained heat exposure while remaining readable on metal and other industrial substrates.

Role of High-Temperature Marking in Heat-Treat Operations
Heat-treat, stress-relief, and coating operations often occur mid-process, not at the end. Part numbers, heat numbers, work-order IDs, and inspection marks must remain intact through these steps to support traceability and quality control. Losing identification at this stage introduces rework risk, sorting errors, and documentation gaps. High-temperature markers provide continuity across those process transitions.

Mighty Marker High-Temperature Performance
Arro-Mark’s high-temperature formulations are engineered to tolerate temperatures that range from several hundred degrees Fahrenheit to well over 2,000°F, depending on the specific product. Marks are designed to resist smearing, excessive oxidation, and burn-off during prolonged exposure. The markers are compatible with common industrial surfaces such as steel, stainless steel, aluminum, and castings, even when surfaces are rough or scaled.

Technical data for the High-Temperature
Mighty Marker line details temperature ratings, color stability, and recommended use conditions. These markers are typically applied at ambient temperature and then exposed to heat, where the marking chemistry cures and stabilizes rather than degrading.

PM-19HT
PM-19HT is formulated for extreme heat applications where temperatures can approach approximately 2,000°F. It is commonly used in heat-treat facilities, foundries, and forging operations where marks must survive direct furnace exposure. The ink is designed to bond to metal surfaces and remain visible after cooling.

PM-92HT
PM-92HT supports high-temperature processes up to roughly 1,800°F. It is often selected for applications involving long dwell times at elevated temperature, such as stress relieving or high-temperature coating preparation. The marker provides strong contrast on darker metal surfaces.

MM-99HT
MM-99HT is used in applications requiring durable marking through moderate to high heat cycles, typically up to about 1,600°F. It is well suited for fabrication and welding environments where parts may see repeated thermal exposure.

PM-34
PM-34 addresses lower high-temperature ranges compared to the HT-specific models but remains appropriate for environments where standard paint markers fail. It is frequently used for parts entering ovens, paint lines, or pre-heat stages where consistent readability is still required.

Shop-Floor Applications
In production environments, these markers are typically used for lot identification, orientation marks, inspection sign-offs, and temporary routing information that must survive thermal processing. The ability to mark once and carry that information through heat-intensive steps reduces handling and minimizes the need for secondary labeling or re-marking.

High-temperature Mighty Markers fit cleanly into operations where traceability and process control depend on markings staying exactly where they were placed, even after the heat is on.

For help on selecting the appropriate Arro-Mark High-Temperature Mighty Marker for specific temperature ranges and applications, contact Leading Marks for product selection support and application recommendations.

The holiday season is here, and Santa Claus is busy checking his list.  Arro-Mark™ is  lending a hand to ensure that every gift and package is perfectly labeled with precision and style. Whether you’re marking gifts, labeling holiday decorations, or creating festive displays, they'’ve got the perfect marker for every need. 

When it comes to gift wrapping and personalization, the arroMARKER Permanent Ink Marker is a must-have. It’s perfect for adding those special touches to gift tags and wrapping paper, thanks to its quick-drying, waterproof, and highly visible ink. For a touch of metallic shimmer, the Mighty Marker Industrial Grade Permanent Paint Marker steps in, ensuring your gift packaging makes a lasting impression.

If you need something more robust for industrial-strength labeling, they’ve got you covered. The Mighty Marker Industrial Grade Permanent Paint Marker delivers bold, durable marks on metal, rubber, plastics, and more. It’s built to handle tough conditions with its waterproof and weatherproof formula. 

For labeling tools and machinery, the Arro-Mark Ball Point Paint Bottle Marker is a reliable option. It’s refillable, reusable, and recyclable, making it a practical choice that withstands extreme weather conditions.

For creative holiday decorations, unleash your artistic side with Flomaster Auto Body & Glass Markers. These are perfect for transforming windows into holiday canvases with snowflakes, ornaments, and festive messages on your CNC machinery. And don’t worry—they’re easy to remove with a little glass cleaner . If you’re crafting handmade ornaments or holiday cards, the Mighty Marker Water Removable is your go-to. With vibrant colors and precision, these markers make your designs stand out and are removable with just water, ideal for temporary holiday flair.

For outdoor marking needs, the Mighty Marker Degrease Resistant DG is your best bet. It’s built to endure the elements and provides ultra-permanent, ketone-based paint that’s perfect for outdoor equipment, holiday displays, or shipping packages.

For those looking for eco-friendly options, the Arro-Mark Ball Point Paint Bottle Marker is a standout choice. Refillable, reusable, and recyclable, it’s the environmentally conscious way to achieve high-performance marking.

No matter what you’re marking this holiday season, Arro-Mark™ has the tools to make it happen. Visit their website to browse their full range of markers and find the perfect fit for your festive needs. And don’t forget to order early—Santa’s busiest month is just around the corner!
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Happy Holidays from Leading Marks & Arro-Mark™!

Did you know that the National Safety Council's NSC Safety Congress & Expo is happening from October 20-25?  

We thought this would be appropriate to talk about some safety issues for using markers in the workplace.  Yes, you read that right. It's not generally a topic that is at the top of your mind so it's a great time to bring it to your attention so you and your team understand how all markers are not held to the same standards. 

Let's state some things that will make the lawyers happy first.  Under normal general use, marking pens are 100% safe to use.  Arro-Mark® manufactures and supplies markers to industrial clients. Most of our end-users are using the pens in the work place and are held to high standards in hazardous materials labeling, signage, and disclosure.

Arro-Mark® ships its products according to the highest standards of disclosure of the hazardous materials. When compared to the competition, Arro-Mark® goes the extra mile to disclose on their packaging and  labeling the information needed to keep their products usable in the workplace. 

Volatile Organic Compounds
Volatile Organic Compounds (or VOC's) are materials that need to be listed cumulatively in the Safety Data Sheet (SDS) under section 9. When these materials break down, they pose health and environmental risks to air quality.

Facilities that deal with large amounts of these chemicals dedicate a lot of resources to documenting and measuring VOC's in their environment. These places deal with enormous quantities of chemicals on a daily basis. Arro-Mark's facility and the marking pens they create pose minute, and in most cases, undetectable VOC concerns. Regardless of the danger or environmental impact these fumes impose, Arro-Mark  lists VOC contents of thier products.

Flammability
Xylene is a bi-product of petroleum fuel production and is flammable. Alcohol has an even lower flash-point. In section 9 of Arro-Mark's Safety Data Sheets, they list the flash-points pertaining to each product mixture. When encased in their industrial quality marking pens, the markers are thoroughly protected from outside dangers.

Only prolonged exposure to direct flame will have any hope of igniting an encased marking pen. Even though these great lengths are taken to protect the contents of thier pens, the flammability needs to be disclosed and is included in all of the SDS paperwork and on their labeling. 

Corrosiveness and Irritation
Xylene, MIBK, Alcohols, and some pigments and dyes are listed in thier SDS and on labelling as potential irritants to skin and corrosive to the eyes. Some dyes and pigments used in Arro-Mark's paints and inks also show an Irritant pictogram on their Safety Data Sheets. Although you may see a corrosive pictogram on some of the labeling or Safety Data Sheets, Arro-Mark guarantees that their products are not corrosive to metals.

Under general and proper use, a marking pen poses no danger in terms of corrosiveness to skin or eyes by way of splash-age or any other concern. Of course,  Arro-Mark cannot guarantee the safety of products used improperly or outside the manufacturers recommended use.

Concerns when transporting or keeping paint or inks in Drums, Bottle, or Cans
Encased in a protective marking pen and confined to proper usage only, all of the above mentioned safety concerns are minimized. On the other hand, the same concerns mentioned before become exacerbated when keeping loose ink or paint in cans, bottles, and especially drums. This is because the risk of mishandling or spillage is higher.

Arro-Mark always prefers to sell their products in the form of marking pens but occasionally have orders and a need to ship our paints and inks in loose containers. Arro-Mark goes to every length necessary and beyond to ensure the safe transport and full disclosure of all handling instructions and hazardous materials concerns pertaining to each shipment.

Competitors are not held to same standards
Uni-paint is a 100% xylene paint marker but they do not list the same concerns about Xylene that Arro-Mark does, and they are able to be marketed to a wider audience because of their less "alarming" labeling. Uni-paint also doesn't go to the hazardous materials documentation lengths that Arro-Mark does.

Uni-paint are sold around the world and people assume that their marker is completely safe because of the absence of warnings. Arro-Mark's xylene paint markers pose the same risks but since Arro-Mark sells to industrial clientelle, their disclosure and display of hazard warnings are more prominent since their pens are made to be used on job site and the work-place. 

Sharpie for instance, and many others contain alcohols and other chemicals that you wouldn't want to be on the skin or exposed to flame. Yet these particular markers have made it into every office, stationary store, and school in the country. They have also been AP or Art Product Certified which excuses these products from needing any hazardous warnings on the product or safety data sheets. 
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Pictograms and warning statements scare away customers
Arro-Mark's pens are no more dangerous or hazardous than the competition's but they remain dedicated to disclosing hazardous concerns to their full extent. It may hurt their sales by being so thorough, but they believe that the most important concern is for our customers who use their products in the workplace. 

​MSDS is Material Safety Data Sheets, while SDS is just Safety Data Sheets.

OSHA standardized the format, as well as simplifying the name, giving consistency with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). GHS specifies what information should be included on the Safety Data Sheets and it's the same standard used in the European Union.

SDS is a simpler and more effective way to communicate the hazards of the chemicals used.

Essentially, they just dropped the "M"

You can learn more about SDS standards in this user-friendly 16 section format document.