Machinery's Handbook, 31st Edition
414 Alloy Steels 317 (S31700): Higher corrosion and creep resistance than type 316. Dyeing and ink manufacturing equipment. 317L (S31703): Extra-low-carbon modification of type 317 for restriction of carbide pre- cipitation during welding. Welded assemblies. 321 (S32100): Stabilized for weldments under severe corrosive conditions and service from 800–1650 ° F (425–900 ° C). Aircraft exhaust manifolds; boiler shells; process equip ment; expansion joints; cabin heaters; fire walls; flexible couplings; pressure vessels. 329 (S32900): Austenitic-ferritic type with general corrosion resistance similar to type 316 but with better resistance to stress-corrosion cracking; capable of age hardening. Valves; valve fittings; piping; pump parts. 330 (N08330): Good resistance to carburization and oxidation and to thermal shock. Heat-treating fixtures. 347 (S34700): Similar to type 321 with higher creep strength. Airplane exhaust stacks; welded tank cars for chemicals; jet engine parts. 348 (S34800): Similar to type 321; low retentivity. Tubes and pipes for radioactive sys tems; nuclear energy uses. 384 (S38400): Suitable for severe cold heading or cold forming; lower cold-work hard ening rate than type 305. Bolts; rivets; screws; instrument parts. 403 (S40300): “Turbine quality” grade. Steam turbine blading and other highly stressed parts including jet engine rings. 405 (S40500): Nonhardenable grade for assemblies where air-hardening types such as 410 or 403 are objectionable. Annealing boxes; quenching racks; oxidation-resistant partitions. 409 (S40900): General-purpose construction stainless. Automotive exhaust systems; transformer and capacitor cases; dry fertilizer spreaders; tanks for agricultural sprays. 410 (S41000): General-purpose heat-treatable type. Machine parts; pump shafts; bolts; bushings; coal chutes; cutlery; hardware; jet engine parts; mining machinery; rifle bar - rels; screws; valves. 414 (41400): High hardenability steel. Springs; tempered rules; machine parts, bolts; mining machinery; scissors; ships’ bells; spindles; valve seats. 416 (S41600): Free-machining modification of type 410, for heavier cuts. Aircraft fit tings; bolts; nuts; fire extinguisher inserts; rivets; screws. 416Se (S41623): Free-machining modification of type 410, for lighter cuts. Machined parts requiring hot-working or cold-heading. 420 (S42000): Higher carbon modification of type 410. Cutlery; surgical instruments; valves; wear-resisting parts; glass molds; hand tools; vegetable choppers. 420F (S42020): Free-machining modification of type 420. Applications similar to those for type 420 requiring better machinability. 422 (S42200): High strength and toughness at service temperatures up to 1200 ° F (650 ° C). Steam turbine blades; fasteners. 429 (S42900): Improved weldability as compared to type 430. Nitric acid and nitro- gen-fixation equipment. 430 (S43000): General-purpose nonhardenable chromium type. Decorative trim; ni - tric acid tanks; annealing baskets; combustion chambers; dishwashers; heaters; mufflers; range hoods; recuperators; restaurant equipment. 430F (S43020): Free-machining modification of type 430, for heavier cuts. Screw ma - chine parts. 430FSe (S43023): Free-machining modification of type 430, for lighter cuts. Machined parts requiring light cold heading or forming. 431 (S43100): Special-purpose hardenable steel used where particularly high mechani cal properties are required. Aircraft fittings; beater bars; paper machinery; bolts. 434 (S43400): Modification of type 430 designed to resist atmospheric corrosion in the presence of winter road conditioning and dust-laying compounds. Automotive trim and fasteners.
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