High Speed Steel


Since our founding in 1948, Griggs Steel has become the leading U.S.-based supplier of high-speed steel. We exclusively produce and ship high-speed steel stock in block sheets, plates, and hardened round bars in various sizes and grades. We only source high-speed steel from the world’s finest mills, so you can have peace of mind knowing you’re getting the quality you need for demanding applications. We provide certifications upon request.

Whether you need raw material for a limited run or want to set up a program for recurring orders, our goal is to ensure you get what you need when you need it.

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Available Grades

high speed steel

M2

This general-purpose molybdenum high-speed steel is tough and resistant to wear. It exhibits exceptional red hardness, making it equivalent to T1 for tooling applications, including broaches, knives, taps, rolls, and more.

high speed steel

M3

M3 excels in broach, blades, and form tooling applications, primarily due to its carbon and vanadium levels, which give it good wear and abrasion resistance and grindability. It’s also resistant to edge breakdown.

high speed steel

M4

M4, which contains high amounts of carbon and vanadium, is known for its versatility. It’s commonly used in applications that require machining abrasive alloys, castings, and heat-treated materials. It has high hardness, but is difficult to grind.

high speed steel

M7

M7 is critical for tooling applications requiring flexibility and extended drill life. Its carbon and vanadium content make it resistant to abrasion, but it also has a good balance of edge toughness, wear resistance, and red hardness, making it ideal for drills, end mills, pins, and reamers.

high speed steel

M42

This molybdenum series of high-speed steel contains up to 10% cobalt, giving it superior red hardness compared to other high-speed steel grades. It provides better cutting speeds and won’t chip as much.

high speed steel

PM M4

PM M4 is a powder metal version of M4, containing chromium and molybdenum. It offers a good combination of high impact toughness, wear resistance, bend strength, corrosion resistance, fatigue resistance, and high-temperature stability.

high speed steel

PM T15

PM T15 is a powder metal alloy containing tungsten and vanadium. It has exceptional red resistance and wear resistance, and because of its fine grain structure, it provides additional impact toughness and bend strength.

high speed steel

PM A11

PM A11, or CPM®, exhibits exceptional performance when used in cold work tooling applications due to its good grindability and predictable response to heat treatments. Its added vanadium and molybdenum, paired with its high chromium content, result in exceptional wear resistance, deep hardening, and hot hardness.

high speed steel

PM M48

This flexible powder metal alloy contains tungsten, molybdenum, and cobalt. Compared to conventional M2, it offers better cutting speeds, longer tool lifespans, and good machineability. Due to its fine grain structure and chemical composition, it also provides high wear resistance, impact toughness, and bend strength.

Partnering With Griggs Steel

Quality Guaranteed

Griggs Steel sources high-speed steel from trusted mills and provides a certificate of quality with every order, if needed. Should you find any defects, we will credit the cost of the steel purchased through us, plus any work you put into making your tools.

Reliable Shipping & Turnaround

We provide a 2-day maximum turnaround time on rod and bar products and a 4-day maximum on block and plate stock. However, if your order is urgent and we have the material available, we can provide same-day shipping.

Flexibility

At Griggs Steel, we only have one goal: getting you the high-speed steel you need. We can accept all types of orders, including one-time, blanket, rolling, and more. We can even create an ongoing program for recurring orders.

Value-Added Services

Griggs Steel can provide any shape and size needed of our available grades. If we don’t have the grade you’re looking for in stock, we will develop a custom solution based on your project and budget requirements.

Griggs Steel has been an industry-leading domestic supplier of high speed steel (HSS) stock since 1948. We produce and ship HSS stock in block sheets, plates, and hardened round bars of various sizes and grades. Additionally, we only source steel from the world’s finest mills, so you can rest assured you’re getting the quality you need for your demanding applications.

Available Grades

Benefits & Capabilities

  • high speed steelMill certificate of quality can be provided with every order.
  • Defect-free guarantee—should you find any defects, we will credit the cost of the steel purchased through us, plus any work you put into making your tools.
  • 1-2-day turnaround on all rod and bar products; 3-4 day turnaround for block and plate stock.
  • Same-day shipping available for urgent orders.
  • Ongoing programs for recurring orders are available.
  • We accept all types of orders, including blanket and rolling.
  • Should a specific steel grade be unavailable, we can develop a custom solution based on project and budget requirements.

Our Process for PM Stock

Griggs Steel manufactures PM stock using the proprietary Crucible Particle Metallurgy process, a form of powder metallurgy. This process involves pouring the molten alloy through a spray nozzle and atomizing it to produce tiny droplets of steel that quickly cool into a fine powder, stored in sealed and decontaminated capsules. The powder is then subjected to hot isostatic pressing (a combination of high pressure and near-melting point temperature) to compact it, producing a fine-grained, homogeneous bulk structure with a uniform distribution of carbides and little to no precipitation of alloying elements.

Get the Quality You Deserve Today