Alloys We Recycle
Inconel 625 and Inconel 718 are important recyclable materials for us at Greystone Alloys. We purchase scrap to process and supply secondary processors as well as mills with revert material.
- Turnings or Borings
- Sawing waste
- Grindings: Wet and Dry
Inconel is an important high temp material in the oil and gas, petrochemical and aerospace industries. With its resistance to harsh environments such as corrosion, oxidation; Inconel is a critical component to structural integrity and safety.
|Inconel 718 Alloy|
|Cb + Ta||5.25|
|Inconel 625 Alloy|
|Cb + Ta||3.65|
Hastelloy C276 and Hastelloy X are important recyclable materials for us at Greystone Alloys. We purchase scrap from industrial accounts as well as other scrap companies to process and supply secondary processors as well as mills with revert material.
Hastelloy scrap recycling is an important part of our business at Greystone alloys. We purchase Hastelloy in most forms such as:
- Turnings or Borings
- Sawing waste
- Grindings: Wet and Dry
Hastelloy finds application in:
- Pollution control
- Chemical processing
- Waste treatment
- Marine engineering
- Pulp and Paper Production
Since Hastelloy has excellent corrosion resistance in a wide range of corrosive media and is especially resistant to pitting and crevice corrosion, these alloys might be used in any environment that requires resistance to heat and corrosion but where the mechanical properties of the metal must be retained.
|Hastelloy C276 Alloy|
|Hastelloy X Alloy|
Haynes® Family of Heat-Resistant Alloys
Molybdenum does not occur as a free metal in nature, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high pressure and high temperature applications, as pigments and catalysts.
The ability of molybdenum to withstand extreme temperatures without significantly expanding or softening makes it useful in applications that involve intense heat, including the manufacture of aircraft parts, electrical contacts, industrial motors and filaments. Molybdenum is also used in alloys for its high corrosion resistance and weldability.Molybdenum contributes corrosion resistance to type 316 stainless steel by ‘gettering’ residual carbon, preventing the formation of chromium carbide at grain boundaries.Most high-strength steel alloys contain 0.25% to 8% molybdenum. Despite such small portions, more than 43,000 tons of molybdenum are used as an alloying agent each year in stainless steels, tool steels, cast irons and high-temperature superalloys.
Monel is a trademark of Special Metals Corporation for a series of nickel alloys, primarily composed of nickel and copper, with some iron and other trace elements.
Greystone Alloys accumulates smaller quantities of Monel and other nickel alloys combining them into larger orders for processors and mills.
Monel finds application in:
- Oilfield Industry – Oilfield applications include using Monel in both flex and slick collars.
- Chemical Industry – The good resistance against corrosion by acids and oxygen makes monel a good material for the chemical industry.
- Marine Industry – Monel’s corrosion resistance makes it ideal for marine applications such as piping systems, pump shafts, seawater valves, trolling wire, and strainer baskets.
- Musical Industry – Monel is used as the material for valve pistons in some higher quality musical instruments such as trumpets, tubas and french horn rotors.
- Monel 400
- Monel 401
- Monel 404
- Monel K-500
- Monel R-405
As a high melting point metal, Tantalum possesses a low vapor pressure and good electrical and thermal conductivity up to very high temperature. The advantages of Tantalum are excellent corrosion resistance, high high-temperature strength, good machinability and good biocompatibility.
Tantalum and Ta-Alloy are mainly used for Heat Exchangers, Shell and Tube Heaters, Bayonet Heaters, Condensers, vessel liners, Sputtering Targets, Cathode Protection Systems for steel structures such as bridges, water tanks, Corrosion Resistant Fasteners, High Temperature Furnace Parts, Nuclear Reactors, Aircraft and Missile Parts.
Greystone Alloys accumulates smaller quantities of Tantalum and other nickel alloys combining them into larger orders for processors and mills.
Tantalum finds application in:
- Nuclear Sector
- Steel Construction
- Heating/Cooling Industry
- Aircraft/Missile Industry
Greystone Alloys accumulates smaller quantities of tool steel scrap and other nickel alloys combining them into larger orders for processors and mills.
Common Tool Steel Scrap Grades:
- T~1 Tool Steel Scrap – consists of common T=1 Tool Steel (also known as 18-4-1 alloy). This material has a chemical composition of 0.70% Carbon, 4.0% Chromium, 12.0% Tungsten, 5.0% Vanadium, balance iron. Typical items made of T=1 include drills, taps, reamers, milling cutters.
- T~15 Tool Steel Scrap – T-15 is a tungsten based high-speed steel designed for use in heavy machining. This material has a chemical composition of 5.0% Cobalt, 4.0% Chromium, 5.0% Tungsten, 5.0% Vanadium, balance iron. Primary use for T-15 is machining high hardness and heat treated materials such as 17-4 PH stainless steel.
- M~1 Tool Steel Scrap – consists of common M=1 Tool Steel and has a chemical composition of 0.80% Carbon, 4.0% Chromium, 8.5% Molybdenum, 1.0% Vanadium and the balance Iron. Common items made of M=1 include woodworking tools, drills, taps, reamers, milling cutters, lathe tools, saws, routers.
- M~2 Tool Steel Scrap – consists of common M=2 Tool Steel (also known as 6-6-2 alloy) and has a chemical composition of 0.85% Carbon, 4.0% Chromium, 5.0% Molybdenum, 6.25% Tungsten, 2.0% Vanadium and the balance Iron. Common items made of M=2 include boring tools, broaches, milling cutters, taps, drills, saws & lathe tools.
- M~42 Tool Steel Scrap – M42 is a Cobalt Molybdenum based high-speed steel designed for use in precision machining. M42 has high wear resistance and cutting ability. It has a chemical composition of 8% Cobalt, 3.75% Chromium, 9.5% Molybdenum, 1.5% Tungsten, 1.15% Vanadium and the balance Iron. Primarily used in making twist drills, taps and punches.
Zirconium is resistant to corrosion in most organic acids. Its corrosion resistance comes from a chemically inert oxide that forms to protect the metal. This makes zirconium especially important to the chemical processing industry.
Greystone Alloys accumulates smaller quantities of Zirconium and other nickel alloys combining them into larger orders for processors and mills.
Zirconium finds application in:
- Nuclear Industry – 90% of all Zirconium produced is used in nuclear reactors because of its low neutron-capture cross-section and resistance to corrosion.
- Aerospace Industry – Zirconium is used in space vehicle parts for their resistance to heat, an important quality given the extreme heat associated with atmospheric reentry.
- Turbine Industry – High temperature parts such as combustors, blades and vanes in most modern gas turbines which are driven to ever higher firing temperatures to produce more electricity at less CO2.
- Dental Industry – the oxidized form of Zirconium is also used in dentistry for crowning of the teeth because of its biocompatibility, strength and appearance.