321 Stainless Steel Technical Data Sheet


material aisi 321

We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, 254, gh3030, 625, 253MA, S30815, 317L, Type 317, 316lN, 8020, 800, 800H, C276, S32304 and others special requirement stainless steel grade.

These grades are used as a result of they don’t seem to be sensitive to intergranular corrosion after heating throughout the carbide precipitation range of °C. Grade 321 is the grade of alternative for purposes within the temperature range of up to about 900 °C, combining excessive power, resistance to scaling and section stability with resistance to subsequent aqueous corrosion. The annealing temperature range for Type 321 is 1800 to 2000° F (928 to 1093° C). As emphasized, however, annealing in the 800 to 1500° F (427 to 816° C) temperature range doesn’t end in a susceptibility to intergranular attack.

Annealing colors, scales, slag residues, tramp iron, spatters and such like need to be eliminated, so as to not destroy the passive layer. For cleansing the floor the processes brushing, grinding, pickling or blasting (iron-free silica sand or glass spheres) can be applied. Pickling of the previously brushed seam area is carried out by dipping and spraying, nonetheless, typically pickling pastes or solutions are used. Alloy 321 is titanium stabilized austenitic stainless-steel plate with good general corrosion resistance. It has excellent resistance to intergranular corrosion after publicity to temperatures within the chromium carbide precipitation vary of °F ( °C).

A sizzling crack hazard for the welding seam does not exist, when choosing an relevant process. 1.4541 can be suitable for laser beam fusion chopping with nitrogen or flame slicing with oxygen. The reduce edges only have small heat affected zones and are generally freed from micro cracks and thus are properly formable. While selecting an relevant process the fusion reduce edges may be converted immediately.

The alloy resists oxidation to 1500°F (816°C) and has greater creep and stress rupture properties than alloys 304 and 304L. Type 321 is particularly useful under conditions which trigger polythionic acid stress corrosion of non-stabilized austenitic stainless steels similar to Type 304. Exposure of non-stabilized austenitic chrome steel to temperatures in the sensitizing vary will cause the precipitation of chromium carbides at grain boundaries. On cooling to room temperature in a sulfide-containing environment, the sulfide reacts with moisture and oxygen to form polythionic acids which connect the sensitized grain boundaries. Polythionic acid SCC has occurred n oil refinery environments the place sulfides are common.

  • The use of a higher alloyed filler metallic can be essential as a result of solid structure of the weld metal.
  • Their fusion level is decrease than that of non-alloyed steel therefore austenitic steels need to be welded with decrease heat input than non-alloyed steels.
  • When selecting the filler metallic, the corrosion stress must be regarded, as well.
  • To avoid overheating or burn-via of thinner sheets, larger welding speed needs to be utilized.
  • Austenitic steels only have 30% of the thermal conductivity of non-alloyed steels.

We have thousands tons stock of stainless steel sheet and coil with various size and grade,mainly include austenitic stainless steel, martens stainless steel (including precipitation hardened stainless steel sheet & coil), ferritic stainless steel, and duplex stainless steel.

Characteristics of Stainless Steel Sheet and Plate:
High corrosion resistance
High strength
High toughness and impact resistance
Temperature resistance
High workability, including machining, stamping, fabricating and welding
Smooth surface finish that can be easily clean

Our stainless production range

brushed stainless steel sheet

Austenitic stainless steels throughout annealing are heated to pretty high temperatures, typically 1050oC oC to ensure that all chromium carbides present are dissolved and the entire chromium is taken into solution within the austenite. If subsequently used in service at room temperature while some slight precipitation of chromium carbide can occur over an prolonged period this can usually have little have an effect on on corrosion resistance. Alloy 321 is stabilized stainless steel plate which offers as its major advantage a superb resistance to intergranular corrosion following publicity to temperatures in the chromium carbide precipitation vary from 800 to 1500°F (427 to 816°C). Alloy 321 stainless-steel plate is stabilized in opposition to chromium carbide formation by the addition of titanium.

Length: 2000mm, 2438mm,2500mm,3000mm,6000mm,or required

Contents of ferrite up to 10% have a favourable impact and don’t affect the corrosion resistance usually. The thinnest layer as attainable have to be welded becaues a higher cooling pace decreases the addiction to hot cracks.

It is most important that oxygen is at all times allowed to circulate freely on all stainless steel surfaces to make sure that a chrome oxide movie is at all times present to protect it. If this is not the case, rusting will happen as with other forms of non stainless steels. Weld metal with a completely austenitic structure is more susceptible to cracking during the welding operation.

aisi 321
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