440A pach asye pwopriyete ak aplikasyon pou

440A stainless steel properties and applications

440A pach asye

UNS nimewo: S44002

�% 97�440A karakteristik ak aplikasyon pou:

Itilize kòm koupe zouti zouti% 2c mezire zouti, zansèt.

●440A chemical composition ① :

Carbon C: {{0}}.60~0.75

Mn: Mwens Less oswa egal 1.{00

Si: Mwens Less egal 1.{00

Chromium: 16.0}0}

Nickel Ni② : -

P: Mwens Less egal 0.04

Sulfur S: Mwens Less oswa egal %0.03

Molybdenum Mo: Mwens Less oswa egal 0.75

Remake byen 3a yon sèl yon sèl valè valè sof si otreman indicated; Lè itilize pipe fè pwosesis, nickel kontni nan kèk types types austenitic asye dwe yon ti kras valè nan nan tablo a ③ pral; ④ ta kontni 7b{0}}.7b0}%; �%.pi wo kontni se 0.75%; ⑥ Pi wo a kontni se 0.70%

carbon kontni ak dite nan 440A{{1}B}B{2{2}C yo pwogresif ogmante soti nan A-B-C (A-0.75%, B{{7}.9%, C{{{-1.2%). 440C se yon trè high-wo fen asye asye dite anjeneral rive jwenn {{{13}RC. rust rezistans twa twa kalite asye se bon, 440A pi bon, ak 440C se pi ba a. 440C se trè komen.

The chemical composition of Martensitic stainless steel is characterized by the addition of molybdenum, tungsten, vanadium, niobium and other elements on the basis of different composition combinations of {{0}}.1%-1.0%C and 12%-27%Cr. Because the structure is body-centered cubic structure, the strength decreases sharply at high temperature. Below 600 degree , the high temperature strength is the highest in all kinds of stainless steel, and the creep strength is also the highest. 440A has excellent hardening performance, high hardness, and higher toughness than 440B steel and 440C steel. 440B is used for cutting tools, measuring tools, bearings and valves, and has higher hardness than 440A steel and higher toughness than 440C steel. 440C has the highest hardness of all stainless steel and heat-resistant steel for nozzles and bearings. 440F is a steel grade that improves the cutting performance of 440C steel and is used in automatic lathes.