321/321H Stainless Steel Sheet/Plate

Grade: 201/304/316L/310S/ 2205 and so on
Surface:  No.4
Standard: ASTM A240
Thickness: 0.076mm-28mm
Origin: POSCO, TISCO,BAOSTEEL

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321 Stainless Steel Sheet/Plate:

Alloy 321 (UNS S32100) is a titanium stabilized austenitic stainless steel with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also possesses good low temperature toughness.

321H Stainless Steel Sheet/Plate:

Alloy 321H (UNS S 32109) is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537°C). In most instances, the carbon content of the plate enables dual certification.

Alloy 321 cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.

Applications

  1. Aerospace – piston engine manifolds
  2.  Chemical Processing
  3. Expansion Joints
  4. Food Processing – equipment and storage
  5. Petroleum Refining – polythionic acid service
  6. Waste Treatment – thermal oxidizers
  7. Pharmaceutical Production

Standards

  1. ASTM……..A 240
  2. ASME……..SA 240
  3. AMS………..5510

Chemical Properties:

Weight % (all values are maximum unless a range is otherwise indicated)

Element 321 321H
Chromium 17.00 min.-19.00 max 17.00 min.-19.00 max.
Nickel 9.00 min.-12.00 max 9.00 min.-12.00 max.
Carbon 0.08 0.04 min.-0.14 max.
Manganese 2.00  2.00
Phosphorus 0.045 0.045
Sulfur 0.03  0.03
Silicon 0.75 0.75
Titanium 5 x (C + N) min.-0.70 max. 4 x (C + N) min.-0.70 max.
Nitrogen 0.10  0.10
Iron Balance  Balance

Physical Properties:

Denstiy
lb m /in3
Coefficient of
Thermal Expansion (min/in)-°F
hermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lb m -°F Modules of Elasticity (annealed) 2 -psi
at 68 °F at 68 – 212°F

at 68 – 1832°F

at 200°F at 32 – 212°F in tension (E)
0.286 9.2

20.5

9.3 0.12 28 x 10 6

Corrosion Resistance

  • exhibits good general corrosion resistance that is comparable to 304.
  • developed for use in the chromium carbide precipitation range of 1800 – 1500°F (427 – 816°C) .
  • can be used in most diluted organic acids at moderate temperatures .
  • can be used in pure phosphoric acid at lower temperatures.
  • can be used in up to 10% diluted solutions at elevated temperatures.
  • resists polythionic acid stress corrosion cracking in hydrocarbon service.
  • utilized in chloride or fluoride free caustic solutions at moderate temperatures.
  • does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid service.

Value-added Service

Every industry has its unique set of stainless steel coil specifications and needs. We offer many Value Added Services to meet your needs from cut-to-length to hard-to-find materials and special requirements. With over 13 years in the business, our team is professional at finding out solutions to fit your needs.

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Stainless Steel Coil/Sheet Beveling We can cut and bevel the edges of stainless steel coil/sheet to prepare forwelding or other processing.
Stainless SteelCoil/Sheet Grinding We can provide grinding service of stainless steel steel coil/sheetin order to satisfy customers’ flatness requests.
Stainless SteelCoil/Sheet Polishing Our stainless steel steel coil/sheetcan be polished to a #4 polish, #6 polish,#7polish, or a #8 mirror finish. It can also be polished on one side or two sides.
Stainless SteelCoil/Sheet Perforating Our perforated stainless steel steel coil/sheetcomes in a selection of holeshapes, pattern sizes, gauges and grades. It has endless applications such asenclosures,partitions, sign panels, guards, screens, and more.
Stainless SteelCoil/Sheet Laser Cutting Our technologically advanced laser machines provide us with an efficient, high speed and cost effective form of profiling steel coil/sheetwhich ensures a superior clean cut and oxide free finish.
Stainless SteelCoil/Sheet Water Jet Cutting We offer stainless steel steel coil/sheetdynamic Waterjet cutting in order to process complex part geometry.
Stainless SteelCoil/Sheet Embossing Our stainless steel embossed patterns including basket embossed pattern,diamond pattern or square pattern.
Stainless Steel Coil/Sheetdecorating We offer various decorative stainless steel steel coil/sheet, such as stainless steel mirror steel coil/sheet, stainless steel hairline steel coil/sheet,color coated stainless steel coil/sheet, etched stainless steel steel coil/sheet, vibration finish stainless steel steel coil/sheet, bead blast finish stainless steel steel coil/sheet, stain brush finish stainless steel steel coil/sheet, and more.
Stainless SteelCoil/Sheet Heatreating & Annealing We can heatreat 410 and 17-4PH stainless steel plate to change mechanical properties. In some cases, secondary annealing 300 series might be required depending on the application.

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Our stainless steel products are packed and labeled according to the regulations and customers requests.

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