Alloy Steel

  • D6AC High Strength Alloy Steel


    D6AC is a medium carbon, low alloy, vacuum melted ultra high-strength steel primarily used for high strength structural applications requiring strength levels up to 280,000 PSI.



    Its hardenability of this alloy is better than of AISI 4340. D6AC is able to reach strengths ranging from 180 to 260 KSI through heat treatment.


    D6AC VAC-ARC Steel is produced by the consumable electrode vacuum arc remelting process to provide optimum cleanliness and preferred ingot structure.



    • AMS 6431
    • AMS 6438
    • AMS 6432
    • AMS 6439
    • ASTM A579
    • UNS K24728
    • MIL-S-8949


    Aircraft landing gear, axles, shafts.


  • 9310 Alloy Steel


    9310 is a low alloy steel containing chromium, nickel and molybdenum with high hardenability, strength and fatigue resistance. 9310 is a deep hardening steel. It has excellent ductility and toughness make it optimal choice for components with heavy sections.

    VIM-VAR 9310 is for parts requiring maximum strength, wear resistance and toughness.

    9310 Aircraft Quality is vacuum arc remelted, resulting in the highest quality, cleanliness and reliability.



    • AISI 9310
    • UNS G93100
    • AMS 6260
    • AMS 6265
    • AMS 6267
    • ASTM A322
    • ASTM A519
    • ASTM A711


    Heavy duty gears, shafts, machined components, clutch parts, piston pins, chain roller and bushings, wrist pins, boring bars, cutting shanks, ratchets, power tools, aircraft engine gears, aircraft engine bearings, pinions.

  • 300M Alloy Steel


    300M VAC-ARC Steel is a modified 4340 alloy steel with high hardenability and very high strength. This is achieved with the inclusion of vanadium and a higher silicon composition. 300M is a great choice where fracture toughness and impact strength are crucial. It is used mostly in the 270/300 KSI tensile strength range for aircraft gears, flap tracks and other structural applications.

    Vacuum Arc Remelting (VAR) improved the cleanliness and preferred ingot structure.



    • UNS K44220
    • AMS 6417
    • AMS 6419
    • ASTM A646
    • ASTM A579
    • MIL-S-8844


    Aircraft gears, flap tracks, high strength bolts, airframe parts, driveshafts, missile components,

  • Alloy 6150


    Alloy 6150 is a chromium vanadium alloy with good ductility. This alloy is used in products when hardening is needed. This alloy has good resistance to shock and abrasion in heat treated condition.

    The machinability rating of 6150 steel is 59.


    • UNS G61500
    • AISI 6150
    • ASTM A231
    • ASTM A505
    • ASTM A29
    • ASTM A322
    • ASTM A331
    • ASTM A519
    • ASTM A752
    • MIL SPEC MIL-S-8503
    • SAE J1397
    • SAE J404
    • SAE J412


    Shafts, gears, pinions, hand tool components, aircraft parts, automotive leaf springs, piston rods, pump parts.


    Speak to Next Generation Metals about alloy steel.

  • 4140 Gun Barrel Steel


    4140 Gun Barrel Steel is a chromium molybdenum alloy steel with good hardness penetration. This material was designed with consistent hardness and high strength.


    AISI 4140,


    Gun Barrels

    Speak to Next Generation Metals about 4140 Chrome Moly Gun Barrel Steel.

  • 4340 Alloy Steel


    4340 alloy steel is a heat treatable and low alloy steel that contains chromium, nickel and molybdenum. It has good shock and impact resistance with good wear and abrasion resistance when hardened. Its toughness and strength improved in the heat treated condition.

    This alloy can be quenched and tempered to achieve a wide range of hardness, ductility and strength levels while still being able to resist stress.

    In the AMS 6415 cold finished or hot rolled condition, it has hardenability with high strength characteristics. This condition is an optimal choice for highly stressed parts that will be used in severe conditions.

    4340 alloy is available in both vacuum milt (VM) and air melt variations.


    • AISI 4340
    • AMS 6409
    • AMS 6415
    • AMS 6359
    • AMS 6414
    • AMS 6454
    • ASTM A829
    • UNS G43400
    • ASTM A29
    • ASTM A320
    • ASTM A322
    • ASTM A331
    • ASTM A506
    • ASTM A646
    • MIL-S-5000


    Transmission gears and shafts, aircraft landing gear, structural parts such as gears, sprockets, chucks, molds. Crank shafts, valves, crank shafts, mine-drilling parts, gun bodies, connecting rods, axle shafts, impeller shafts, die holders, bolts, flanges, collets, spindles, machine tool arbors.

  • 4150CMV Gun Barrel Quality Steel


    Next Generation Metals is able to be your main supplier on 4150 Chrome Moly Vanadium, also known as 4150Mod.

    This material is chromemoly steel, double stress relieved during production and cryogenically treated. Easily understood, it is a CrMoV steel with the composition of 4150 and an additive of Vanadium. This drastically increases its impact strength.




    gun barrels, rifle barrels. Military, AR15 and M16 rifles. M4 carbine barrels.