Browse Topic: Alloys
This specification covers a blend of chromium carbide and a nickel-chromium alloy in the form of powder.
This specification covers an aluminum alloy in the form of rolled or cold-finished bars, rods, wire, and flash-welded rings and of stock for flash-welded rings.
This specification covers a titanium alloy in the form of sheet, strip, and plate on product 0.008 to 3.000 inches (0.20 to 76.20 mm), inclusive, in thickness (see 8.6).
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing up to 5.000 inches (127.00 mm), inclusive, in nominal diameter or least thickness between parallel sides (bars, rods, wire, profiles) or nominal wall thickness (tubing) (see 8.5).
This specification covers a titanium alloy in the form of pre-alloyed powder.
This specification covers an aluminum alloy in the form of honeycomb core in a non-hexagonal, flexible cell configuration with the core being treated for increased corrosion resistance and furnished only in the expanded form (see 8.5).
This specification covers an aluminum alloy in the form of plate 0.250 to 4.000 inches (6.35 to 102.0 mm), inclusive, in nominal thickness (see 8.5).
This specification covers a cobalt alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder.
The specification covers a titanium alloy in the form of wire (see 8.5).
This specification covers one grade of commercially pure titanium in the form of wire for welding filler metal (see 8.5).
This specification covers a titanium alloy in the form of wire for welding filler metal (see 8.5).
This specification covers a palladium-silver alloy in the form of round wire 0.004 to 0.080 inch (0.10 to 2.03 mm), inclusive, in nominal diameter (see 8.5).
This specification covers a titanium alloy in the form of welding wire (see 8.5).
This specification covers a titanium alloy in the form of bars, wire, forgings, and flash-welded rings up through 3.999 inches (101.57 mm), inclusive, and stock for forging, flash-welded rings, or heading (see 8.6).
This practice provides a method for evaluating microhardness and microstructure very close (0.002 inch (0.051 mm) or less) to the surface of a disk specimen. Specific accept/reject criteria for partial decarburization (3.7.1), inadvertent carburization/nitriding (3.7.3), total decarburization/intergranular oxidation (3.8), and other characteristics evaluated are to be found in the applicable specification where this ARP is referenced.
This specification covers an aluminum alloy in the form of plate 0.500 to 4.500 inches (12.7 to 114.3 mm), inclusive, in nominal thickness (see 8.5).
This specification covers an aluminum alloy in the form of castings (see 8.10).
This specification defines limits of variation for determining acceptability of composition of cast and wrought corrosion and heat-resistant steels and alloys, maraging and other highly alloyed steels, and iron alloy parts and materials acquired from a producer.
This specification covers a corrosion-resistant nickel-copper alloy in the form of seamless tubing.
This specification covers a copper alloy (phosphor bronze) in the form of sheet, strip, and plate (see 8.6).
This specification covers a copper alloy in the form of strip (see 8.6).
This specification establishes the engineering requirements for the uphill quenching process of aluminum alloy product. Uphill quenching immerses product in liquid nitrogen followed by exposure to a high-pressure/high-velocity steam blast or boiling water.
This specification covers a corrosion- and heat-resistant nickel alloy in the form of sheet, strip, and foil 0.100 inch (2.54 mm) and under in nominal thickness.
This specification covers a corrosion-resistant steel in the form of wire.
For brake and clutch components of aircraft vehicles which require higher mechanical strength and wear resilient, light-weight aluminium composites were developed infusing solid lubricant. In this study, hybrid composites were developed using powder metallurgy route with aluminum alloy AA356 and various amounts of zirconium oxide (ZrO2) (0, 5, 10, 15, and 20 wt.%) as reinforcements. A solid lubricant hexagonal boron nitride (hBN) at a fixed 5 wt.% is considered. Following the appropriate ASTM guidelines, the specimens were mechanically characterized by measuring their density, porosity, micro-hardness, compression strength, impact strength, and flexural strength, among other properties. The findings showed that the composites' mechanical and physical behaviour were greatly affected by the inclusion of ZrO2. Porosity increased as a result of particle clustering and interfacial voids, while density increased gradually as ceramic content increased. Consistently increasing ZrO2 addition
Qualification of new aerospace alloys requires extensive mechanical testing to capture anisotropy and ensure reliable performance under complex loading conditions. This process is costly and time-consuming, particularly with emerging manufacturing routes such as additive manufacturing. Advanced yield surface prediction offers a route to reduce test campaigns by linking microstructural features to macroscopic constitutive models. In this work, Digimat is employed as a multi-scale material modeling platform to generate yield surfaces of polycrystalline metals using computational homogenization. Representative volume elements (RVEs) are constructed from experimental texture and grain morphology data, and their response under multiaxial loading is simulated using a crystal plasticity framework. The computed yield loci are then fitted with phenomenological functions (e.g. Yld2000-2D), enabling calibration of anisotropic yield models from virtual testing. As a case study, an AA6016-T4 sheet
This specification covers an aluminum alloy in the form of sheet 0.040 to 0.249 inch (1.02 to 6.32 mm) in nominal thickness (see 8.7).
This specification covers the requirements for the acquisition of two alloys of copper-beryllium alloy strip, having higher electrical conductivity than copper-beryllium alloy strip normally used (see 6.1). All sizes of strip are covered by this specification.
This specification covers a titanium alloy in the form of wire for welding filler metal (see 8.5).
This specification covers an aluminum alloy in the form of castings.
This specification covers an aluminum-lithium alloy in the form of extruded profiles 0.040 to 1.000 inch (1.00 to 25.40 mm), inclusive, in nominal thickness (see 8.5).
This specification covers a corrosion- and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash-welded rings, and stock for forging, flash-welded rings, or heading.
This specification establishes hardness and electrical conductivity acceptance criteria for finished or semifinished parts made from wrought aluminum alloys after heat treatment (see 8.6).
QuesTek is advancing a suite of emerging alloy technologies to address modern rotorcraft engineering challenges. Current initiatives prioritize the optimization of "print-to-use" materials, such as 17-4PH and other specialized steels designed to minimize or eliminate post-processing requirements in additive manufacturing. These innovations represent a strategic shift toward materials that are not only high-performing but are also specifically tailored for next-generation manufacturing workflows. The catalyst for these advancements is QuesTek’s mastery of Integrated Computational Materials Engineering (ICME). These core capabilities are now deployed through QuesTek's ICMD® software platform, which empowers engineering teams with predictive simulation tools that eliminate the bottlenecks of traditional trial-and-error methodologies. By integrating these physics-based models into a centralized digital environment, QuesTek enables the rotorcraft industry to design, test, and implement
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