Specialty Metals by Industry

At Niagara Specialty Metals, we pride ourselves on delivering top-quality steel, melted and manufactured in the USA to meet the highest standards. Our inventory includes air-melted and powder-metal tool steels, high-speed steels, and martensitic stainless steels. We also carry hard-to-find aerospace alloys like 15-5PH, 300M, 4340 VAR, N155, and Greek Ascoloy. All our steel is DFARS-compliant and domestically melted, ensuring a secure supply chain.

We offer hot rolled sheets and plates ranging from .030” to 4” thick and up to 48” wide. Our services cater to aerospace & defense, medical, food processing, hand cutlery, and industrial knife industries. Additionally, we provide hot rolling, machining, precision flattening, and cutting with our laser, waterjets, bandsaws, or shears. All our services can be used to toll process your alloys and steel too.

Aerospace & Defense Metals:

Niagara Specialty Metals is a trusted supplier of high-performance metals tailored for the aerospace and defense industries. Our extensive range of specialty metals, including high-strength low alloy steels, vacuum melted steels, and maraging steels, are engineered to meet the stringent demands of aerospace applications. These materials are crucial in manufacturing critical components such as rotor hubs, gearboxes, missile parts, and structural frames, ensuring reliability and superior performance in the most challenging environments. Adhering to rigorous industry specifications, our metals provide unmatched strength, toughness, and fatigue resistance, making them the preferred choice for aerospace and defense manufacturers.

4340VARHigh strength low alloy steel.Rotor hubs, gearboxesHMS 6-1174, AMS 6359
15-5PHUsed where structural components where corrosion resistance is importantMissile parts, fasteners, fuselage frames, and engine componentsAMS 5862, BMS 7-240
300MVacuum melted steel for high strength applications.Missile parts, fasteners and structural components for airframes and motorsportsMIL-S-8844D, Amendment 1, Class 3 (starting billet)
Maraging C250 & C300VIM/VAR melted and poses superior strength and resistance to cracking.Gearboxes, couplings, driveshafts, missile casings, landing gear componentsAMS 6520, AMS 6521, MIL-S-46850

Industrial Metal Grades:

At Niagara Specialty Metals, we provide top-quality metals engineered to withstand the rigorous demands of industrial applications. Our product range includes stainless, tool, and high-speed steels, which are crucial for producing components that require excellent strength, durability, and resistance to harsh operating conditions.

Greek AscoloyHigh Temp Stainless SteelSteam turbine buckets, high temp boltsAMS 5508
Super InvarLow Expansion AlloyLow expansion alloy used for structural supports for high precision optical and laser systems.
N155High Strength & TempHigh temp exhaust manifolds, turbine buckets, turbine bladesAMS 5532
440C ESRMedium wear stainlessFood processing blades, Bearings and knife blades. High wear resistance and good corrosion resistance.ASTM A276
420SSMedium wear stainlessSurgical instruments, scissors and various cutting tools. Good toughness and moderate corrosion resistanceASTM A276
416SSFirearmsSlides for firearms, valves, shafts. Very machinable and good corrosion resistance.ASTM A276
A7 Modified & D7High wear tool steelBrickmold liners, extrusion tools for ceramics, descale equipment liners.ASTM A681
A2, H13, L6, O1, S1, & S7Air melted tough tool steelsBlanking dies, punches, shear blades, thread roll dies, chucks, pelletizer blades, plastic mold insertsASTM A681
M1, M2, M4, M42High Speed Tool SteelPunches, end mills, reamers, taps, tool bits, gear hobs, broachesASTM A600
CPM S30V, CPM S35VN, CPM S45VN, CPM S90V, CPM MagnaCutStainless Food ProcessingCPM alloys that have high wear and corrosion resistance well suited for industrial food processing.
CPM 1V, CPM 3V, CPM 4V and CPM CruwearCPM alloys that exhibit high toughness and heat resistance.Stamping & forming tools, dies, scrap choppers, fine blanking tools, planer blades coining diesASTM A681
CPM 9V, CPM 10V, CPM 15VCPM Alloys that exhibit very high wear resistancePelletizer blades, barrel liners, punches, dies, granulator blades, slitter knives, screw tips, wear insertsASTM A681
CPM M4, CPM T15, CPM Rex76CPM high speed steels designed to cut other materials efficiently at high speeds despite the extreme heat generated at the tool's cutting edge.Broaches, end mill, gear hobs, spade drills, taps, form toolsASTM A600

Stainless Steel:

Many tooling applications require not only typical tool steel properties but also a degree of corrosion resistance. Our 400 series stainless steels meet these needs as they are martensitic and can be hardened through heat treatment. While they do not offer the same level of corrosion resistance as the 300 series stainless steels, they are much harder and more wear-resistant.

Key Applications:

  • Knife blades
  • Firearms
  • Molds and mold inserts
  • Certain plastic injection molding applications

Tool Steel:

The performance of a metal forming tool relies on optimizing various factors. Typically, operating conditions such as applied loads, abrasive environments, and impact determine the tool’s durability. However, with numerous traditional and CPM tool steels available, it is possible to select one with the right combination of properties for specific applications. Tool steels are categorized and compared based on properties that directly influence performance: hardness, toughness (impact resistance), and wear resistance.

Key Applications:

  • Slitters
  • Shear Blades
  • Molds and mold inserts
  • Blanking Tools

    High-Speed Steel:

    High-speed steels (HSS) are high-alloy steels containing elements like tungsten (W), molybdenum (Mo), vanadium (V), and cobalt (Co). They are designed to cut other materials efficiently at high speeds, even when the tool’s cutting edge generates extreme heat, often exceeding 1000°F depending on cutting conditions, coolants used, and other operational factors.

    For good cutting tool performance, High-Speed Steel must possess three key characteristics:

    1. High Hardness After Heat Treatment: HSS must be capable of being heat-treated to achieve high hardness at room temperature, typically ranging from a nominal hardness of 63 HRC to 68 HRC. This high hardness is necessary for excellent wear resistance.
    2. Red Hardness: HSS must maintain high hardness at elevated temperatures, a property known as red hardness. Since High-Speed Steels are exposed to significant heat at the cutting edge during operation, red hardness is essential for sustaining performance.
    3. Impact Toughness: HSS must have sufficient impact toughness to handle interrupted cutting applications. They are notably tougher than carbide or ceramic materials, which is crucial for withstanding the stresses of cutting.

    Key Applications:

    • Broach Inserts
    • Spade Drills
    • Taps
    • Dies

    CPM Process:

    Conventional high-alloy steels tend to experience alloy segregation during solidification. Despite extensive mill processing, non-uniform clusters of carbides remain as remnants of the as-cast microstructure. This alloy segregation can negatively impact tool fabrication and performance. CPM®* (Crucible Particle Metallurgy) steels are HIP (Hot Isostatic Pressing) consolidated from tiny powder particles, each with a uniform composition and evenly distributed fine carbides. Because there is no alloy segregation in the powder particles, there is no alloy segregation in the final compact. The uniform distribution of fine carbides also prevents grain growth, resulting in a fine-grained microstructure.


    Advantages of CPM:

    For the End User:

    • Availability of higher alloy grades
    • Improved wear resistance
    • Enhanced toughness (reduced chipping)
    • Consistent tool performance
    • Good grindability for resharpening

    For the Tool Manufacturer:

    • Consistent heat treatment response
    • Predictable size changes during heat treatment
    • Excellent and stable substrate for coatings
    • Excellent grindability
    • Improved machinability (with sulfur enhancement)
    • Efficient wire EDM cutting

    Hand Cutlery Metal Grades:

    Niagara Specialty Metals provides premium metals specifically formulated for the hand cutlery industry. Our materials are chosen for their superior edge retention, hardness, and corrosion resistance, making them ideal for crafting high-quality knives and cutting tools. From stainless steels to specialty alloys, our range of metals supports the production of durable and sharp blades that meet the needs of professional chefs, outdoor enthusiasts, and craftsmen. By adhering to the highest industry standards, we ensure that our metals enhance the performance, longevity, and aesthetic appeal of hand cutlery products.

    CPM 154, CPM D2, CPM S30V, CPM S35VN, CPM S45VN, CPM S90V, CPM MagnaCut, CPM 3V, CPM 4V, CPM Cruwear, CPM M4CPM alloys for hand cutlery.Our CPM cutlery alloys have various combinations of toughness, wear, and corrosion resistance. CPM 3V is our toughest grade, CPM S90V has the highest wear resistance. CPM MagnaCut has the highest corrosion resistance. Refer to our cutlery chart to see the combinations available to you.
    154CM, 440C ESR, D2Air melt, lower cost alloys for hand cutlery.Our airmelt cutlery grade have a long history or high performance in the knife industry. They are more affordable for the everyday knife enthusiast.

    We sell three grades of wrought martensitic stainless steel and eight CPM stainless grades for the cutlery industry. All of our steel is melted and manufactured in the USA.

    Wrought Stainless Steels are used for blades and components in knives. 416 is used primarily in the specialty knife industry for bolsters and pins. 440-C ESR and 154-CM are used extensively for blade material. Our 440-C is Electroslag Remelted (ESR) to create a higher quality ingot. The ESR process removes impurities and inclusions though an additional melting step. 154-CM is a slight upgrade to 440-C with better wear and corrosion properties.

    Knife Steel Chart

    CPM® (Crucible Powder Metallurgy) steels offer superior performance over wrought products. Alloy segregation is minimized, and the process produces a very fine microstructure. Cutting applications where edge toughness is required is improved greatly by the CPM process because of the elimination of large carbides. You can also use a much higher alloy content in CPM steels which improves the toughness and/or wear resistance of the alloy. You can also use the CPM process to upgrade existing alloys as was done when CPM-154 was created. Our two newest CPM alloys are S45VN and MagnaCut. S45VN was designed by Frank Cox at Niagara Specialty Metals as a more corrosion and wear-resistant version of S30V and S35VN. Several production knife companies have added this grade to their blade offerings. CPM MagnaCut was designed by Larrin Thomas as a unique powder metallurgy stainless tool steel with a design that eliminates chromium carbide in the heat-treated microstructure. An excellent combination of toughness and wear resistance is achieved by having only small, high-hardness vanadium and niobium carbides, giving CPM MagnaCut properties similar to non-stainless steel CPM 4V.

    * CPM®, 3V, 4V, S30-V, CPM 154, 154-CM, 15V, S90V and S110-V are registered trademarks of Crucible Industries LLC.

    CPM® is a registered trademark of Crucible Industries


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