Defense Grade Metals
Discover the top metals for defense applications. Learn about key properties like hardness, toughness, and strength. See how alloys, heat treatments, and ceramics are used in armor. OnlineMetals.com offers a wide selection of defense materials.
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Defense grade metals like 4140 steel, 17-4 stainless, and 7075 aluminum are precision materials for fabricating safe, reliable gun parts. OnlineMetals.com stocks these alloys in a variety of shapes and sizes, ready for your next build or repair project.
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Key properties include strength, durability, high temperature resistance, corrosion resistance, dimensional stability, low friction, high hardness, and resistance to fatigue. These are achieved through high-strength steels, alloys, and specialized polymers.
Common alloys include 4140/4150 for toughness and hardness, 8620/9310 case hardening steels for tough parts, S7 for high strength, O1 for toughness, 440C/17-4 stainless for corrosion resistance, and 4340 for high strength. Each offers specific benefits for various defense applications.
Processes include annealing to relieve stress, tempering for toughness and wear-resistance, quenching to lock in qualities, nitriding for hardness and corrosion resistance, high-pressure gas quenching for strength, and precipitation hardening for strength and durability.
High-stress parts require stronger materials, specialized manufacturing, and rigorous quality control for reliability. Less demanding components have lower material requirements and simpler manufacturing processes.
Methods include gas nitriding, hot isostatic pressing, black oxide coating, high pressure gas quenching, magnetic particle inspection, test firing, drop testing, shock testing, physical examination, function testing, trigger pull weight testing, and barrel/overall length measurements.
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