Hastelloy C-276 (Alloy C-276, UNS N10276) is a nickel-molybdenum-chromium-tungsten alloy containing 15-17% molybdenum, 14.5-16.5% chromium and 3-4.5% tungsten, and is one of the most widely used alloys for severe corrosive environments. Its high molybdenum content gives outstanding resistance to reducing acids such as hydrochloric and sulfuric acid, as well as to pitting, crevice corrosion and chloride stress-corrosion cracking, and it is one of the few materials that withstand wet chlorine gas, hypochlorite and chlorine dioxide. Its very low carbon content preserves corrosion resistance in the as-welded condition, so post-weld heat treatment is not required. Compared with Hastelloy C-22, it has lower chromium and higher molybdenum, favoring reducing rather than strongly oxidizing media. Typical applications include chemical process reactors, heat exchangers and evaporators, flue gas desulfurization and other pollution-control systems, oil and gas production equipment, pulp and paper bleaching tanks, and pharmaceutical vessels. DASM supplies Hastelloy C-276 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Hastelloy C-22 (Alloy 22, UNS N06022) is a nickel-chromium-molybdenum-tungsten alloy containing 20-22.5% chromium, 12.5-14.5% molybdenum and 2.5-3.5% tungsten, designed for corrosion resistance in both oxidizing and reducing media. Compared with Hastelloy C-276, its higher chromium content improves resistance to oxidizing environments such as nitric acid, wet chlorine and oxidizing chloride solutions, while molybdenum and tungsten give outstanding resistance to pitting, crevice corrosion and chloride stress-corrosion cracking. Its thermal stability allows welded structures to be used in the as-welded condition without post-weld heat treatment. Typical applications include chemical process equipment handling mixed acids, pharmaceutical and acetic acid reactors, pumps and valves, pulp and paper bleaching vessels, flue gas desulfurization and other pollution-control systems, and diaphragms for ultra-high-purity gas valves. DASM supplies Hastelloy C-22 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Inconel 939 (IN-939) is a cast nickel-chromium-cobalt superalloy strengthened by gamma-prime precipitates of titanium and aluminum and by additions of tungsten, tantalum and niobium. Its high chromium content (about 22.5%) gives excellent resistance to hot corrosion and oxidation, and it combines good creep-rupture strength for long-term service up to approximately 850°C with better weldability than most gamma-prime strengthened cast alloys. It is used for investment-cast vanes and other hot-section components in land-based and marine gas turbines, and increasingly as a powder for additive manufacturing. DASM supplies IN-939 revert as sorted, analyzed, cut and shot-blasted melting feedstock, allowing melters to recover its nickel, cobalt, chromium, tungsten and tantalum content.

Incoloy 907 and 909 (UNS N19907 / N19909) are precipitation-hardenable iron-nickel-cobalt alloys containing 35-40% nickel and 12-16% cobalt with a balance of iron, strengthened by niobium and titanium and designed to combine high strength with a low, nearly constant coefficient of thermal expansion. The cobalt addition raises the Curie temperature, extending the low-expansion range to considerably higher temperatures than Invar, and the alloys retain high strength up to approximately 650°C (1,200°F). Because they contain no chromium, their oxidation resistance at high temperature is limited. Alloy 909 adds silicon (0.25-0.50%) to improve notch-rupture strength over alloy 907. They are used where tight clearances must be held through temperature changes, including gas turbine casings, seals and shafts, rocket-engine thrust chambers and steam-turbine bolts. DASM supplies Incoloy 907 / 909 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed, cut to size and shot-blasted on all surfaces for direct furnace charging.

Incoloy 825 (Alloy 825, UNS N08825) is a nickel-iron-chromium alloy containing 38-46% nickel and 19.5-23.5% chromium, with additions of molybdenum, copper and titanium, designed for corrosion resistance in both oxidizing and reducing environments. Molybdenum and copper give it outstanding resistance to sulfuric and phosphoric acids and good resistance to pitting and crevice corrosion, its high nickel content provides resistance to chloride stress-corrosion cracking, and titanium stabilizes it against sensitization and intergranular corrosion. It is primarily a corrosion-resistant alloy and is generally used at service temperatures up to approximately 540°C (1,000°F). Typical applications include sulfuric acid piping, vessels and pickling equipment, phosphoric acid evaporators, oil and gas well tubing and process piping, and chemical process equipment. DASM supplies Incoloy 825 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Incoloy 800 (Alloy 800, UNS N08800) is an iron-nickel-chromium alloy containing 30-35% nickel and 19-23% chromium with a balance of iron, designed for strength and resistance to oxidation and carburization at high temperatures. Its high nickel content also provides resistance to chloride stress-corrosion cracking. It is used for service up to approximately 816°C (1,500°F); above this temperature, where creep and rupture strength govern, the higher-carbon, coarse-grained Incoloy 800H and 800HT are used. Typical applications include chemical and petrochemical heat exchangers and piping, nuclear steam-generator tubing, furnace components and heat-treating fixtures, and sheathing for electric heating elements. DASM supplies Incoloy 800 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Monel K-500 (Alloy K-500, UNS N05500) is a precipitation-hardenable nickel-copper alloy that combines the corrosion resistance of Monel 400 with substantially higher strength and hardness. Additions of aluminum (2.30-3.15%) and titanium (0.35-0.85%) form fine strengthening precipitates during age hardening, and cold working before aging raises strength further. The alloy retains good toughness at sub-zero temperatures, has low magnetic permeability, and resists seawater and many chemical and oil-field environments. Typical applications include pump and propeller shafts, oil-well tools, valve trim, fasteners, springs and doctor blades for paper production. DASM supplies Monel K-500 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Monel 400 (Alloy 400, UNS N04400) is a nickel-copper alloy containing at least 63% nickel and 28-34% copper, valued for its resistance to seawater, hydrofluoric and sulfuric acids, and alkalis. As a single-phase solid-solution alloy it can be strengthened only by cold working, and it retains high strength and toughness from sub-zero temperatures upward; it is useful up to approximately 540°C (1,000°F) in oxidizing atmospheres and is qualified for ASME pressure-vessel service up to approximately 480°C (900°F). Typical applications include marine valves, pump and propeller shafts, hydrofluoric acid alkylation units and process piping in refineries, chemical process equipment and boiler feedwater heaters. DASM supplies Monel 400 as vacuum-melt quality (VQ) feedstock: every piece is sorted and analyzed to ASTM chemistry, cut to size and shot-blasted on all surfaces for direct furnace charging.

Mar-M 247 is a cast nickel-base superalloy strengthened by a high volume fraction of gamma-prime precipitates and by solid-solution additions of tungsten, tantalum and cobalt, with hafnium added to improve grain-boundary ductility and castability. It is produced as equiaxed and directionally solidified investment castings for service at metal temperatures up to approximately 1,000°C (1,830°F), combining high creep-rupture strength with good oxidation resistance. Typical applications are gas turbine blades, vanes and integrally cast turbine wheels, as well as turbocharger turbine wheels. DASM supplies Mar-M 247 revert as sorted, analyzed, cut and shot-blasted melting feedstock, allowing melters to recover its nickel, cobalt, tungsten, tantalum and hafnium content.

Maraging 250 (18Ni 250, UNS K92890) is a low-carbon, iron-based ultra-high-strength steel alloyed with approximately 18% nickel, 8% cobalt and 5% molybdenum. After solution annealing it forms a soft, machinable low-carbon martensite, and a single aging treatment at approximately 480°C (900°F) precipitates intermetallic compounds to reach a minimum yield strength of 1,724 MPa (250 ksi) with good toughness and weldability. Its corrosion resistance is limited, so parts are normally protected by coating or plating, and prolonged exposure near the aging temperature causes over-aging and loss of strength. It is used for rocket motor cases, aircraft slat tracks, drive shafts and other highly stressed aerospace components. DASM supplies Maraging 250 as sorted, analyzed, cut and shot-blasted melting feedstock, allowing melters to recover its nickel, cobalt and molybdenum content.

Ti 6-2-4-2 (Ti-6Al-2Sn-4Zr-2Mo, UNS R54620) is a near-alpha titanium alloy developed for high-temperature service, combining high strength with excellent creep resistance and thermal stability. A small silicon addition (0.06-0.10%) further improves its creep strength. It retains its mechanical properties up to approximately 540°C (1000°F), well above the service range of Ti-6Al-4V, and is used for compressor blades, discs and cases in gas turbine engines, as well as afterburner and hot airframe sheet components. DASM supplies Ti 6-2-4-2 as sorted, analyzed, cut and shot-blasted melting feedstock.

Ti 6-2-4-2 (Ti-6Al-2Sn-4Zr-2Mo, UNS R54620) is a near-alpha titanium alloy developed for high-temperature service, combining high strength with excellent creep resistance and thermal stability up to approximately 540°C (1000°F). DASM produces Ti 6-2-4-2 ingots lot by lot through its PAM-ISM hybrid continuous melting process: plasma arc melting melts and alloys the charge, including the refractory molybdenum addition, and induction skull melting in a water-cooled copper crucible homogenizes the melt before continuous vertical withdrawal, with no crucible contamination. Standard ingots measure Ø230 mm × 700-2,800 mm, with chemistry verified by OES, O/N and C/S analysis and full traceability from raw material lot to heat and ingot number. The ingots are suited to R&D, trial melting and qualification programs, and as input stock for VAR remelting, forging and hot rolling; customer approval and downstream validation depend on the application.

Ti Gr.7 (Ti-0.15Pd, UNS R52400) is Grade 2 titanium with a small addition of palladium (0.12-0.25%), and is one of the most corrosion-resistant titanium grades. The palladium addition greatly improves resistance to crevice corrosion in hot chloride brines and to reducing acids such as dilute hydrochloric and sulfuric acid, where unalloyed titanium is limited. Its mechanical properties are equivalent to Grade 2 (minimum tensile strength 345 MPa), and like Grade 2 it is generally used at service temperatures below approximately 400°C (750°F). DASM supplies Grade 7 as sorted, analyzed, cut and shot-blasted melting feedstock.

Ti Gr.5 (Ti-6Al-4V, UNS R56400) is the most widely used titanium alloy, combining high strength, low density (4.43 g/cm³) and excellent corrosion resistance. As an alpha-beta alloy strengthened by aluminum and vanadium, it provides a minimum tensile strength of 895 MPa in the annealed condition, and can be further strengthened by solution treatment and aging. It retains useful strength up to approximately 400°C (750°F) and is the standard alloy for airframe structures, fasteners, and the fan and compressor sections of gas turbine engines. DASM supplies Ti-6Al-4V as sorted, analyzed, cut and shot-blasted melting feedstock for titanium ingot production.

Ti Gr.5 (Ti-6Al-4V, UNS R56400) is the most widely used titanium alloy, combining high strength, low density (4.43 g/cm³) and excellent corrosion resistance, with useful strength up to approximately 400°C (750°F). DASM produces Ti-6Al-4V ingots lot by lot through its PAM-ISM hybrid continuous melting process: plasma arc melting refines and alloys the charge, and induction skull melting in a water-cooled copper crucible homogenizes the melt before continuous vertical withdrawal, with no crucible contamination.

Standard ingots measure Ø230 mm × 700-2,800 mm, with chemistry verified by OES, O/N and C/S analysis and full traceability from raw material lot to heat and ingot number. The ingots are suited to R&D, trial melting and qualification programs, and as input stock for VAR remelting, forging and hot rolling; customer approval and downstream validation depend on the application.

Ti CP Grade 2 (UNS R50400) is the most widely used grade of commercially pure titanium, combining moderate strength with good ductility, cold formability and weldability. Its oxygen and iron limits are slightly higher than Grade 1, giving higher strength while retaining good formability. It offers excellent corrosion resistance in seawater, chloride and oxidizing environments, making it the standard grade for heat exchangers, condenser tubing and chemical process equipment. Its strength decreases as temperature rises, and it is generally used at service temperatures below approximately 400°C (750°F). DASM supplies Grade 2 as sorted, analyzed, cut and shot-blasted melting feedstock, and as Ti Cobble Gr.2, a recycled titanium charge for stainless steel, specialty steel and Ni-based alloy titanium additions.