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Alloy 321 & 321H Stainless Steel Plate High Carbon Austenitic Stainless Steel Stabilized With Titanium

Categories Stainless Steel Plate
Brand Name: DELTA
Model Number: 321H
Certification: ISO
Place of Origin: China
MOQ: 400 kgs
Price: 3000 -3220 USD/Ton
Payment Terms: L/C, T/T, Western Union
Supply Ability: 10 Ton per week
Delivery Time: 5 - 12 days based on the quantity
Packaging Details: wooden pallets + waterproof paper
Products: stainless steel plates
Grade: 321H
Standard size: 1000*2000mm 1219*2438mm 1500*6000mm
Thickness: 0.6- 30.0mm
Brand: TISCO BAOSTEEL POSCO LISCO
Loading Port: Shanghai Port
MOQ: 200 kgs
Packing: wooden pallets + waterproof paper
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Alloy 321 & 321H Stainless Steel Plate High Carbon Austenitic Stainless Steel Stabilized With Titanium

Alloy 321 & 321H Stainless Steel Plate High Carbon Austenitic Stainless Steel Stabilized With Titanium


More Informations of our Products


Product
Stainless Steel Sheet/Plate
Standard
ASTM A240,GB/T3280-2007,JIS4304-2005,ASTM A167,EN10088-2-2005,etc
Material
310S,310,309,309S,316,316L,316Ti,317,317L,321,321H,347,347H,304,304L,302,301,
201,202,403,405,409,409L,410,410S,420,430,631,904L,Duplex,etc
Surface
2B,2D,BA,NO.1,NO.4,NO.8,8K,mirror,checkered,embossed,hair line,sand blast,Brush
Thickness
Cold Rolled:0.3-6mm
Hot Rolled: 3-20mm
Width
1000mm,1219mm,1500mm,1800mm,2000mm,2500mm,,etc
Length
2000mm,2440mm,3000mm,5800mm,6000mm,etc
Package
Covered with a layer of plastic film and cardboard,packed on the wooden pallets/ iron packing,bound with iron belt,loaded in the containers.
Price Terms
Ex-Work,FOB,CFR,CIF,FCA,etc
Payment Terms
TT,L/C at sight ,western Union,etc.

321/321H is a strong stainless steel alloy that can withstand high temperatures and is resistant to corrosion in hot environments. It is a variation of the standard 321 alloy, which is stabilised with titanium to improve its intergranular corrosion resistance. The H in 321H stands for "high carbon" which indicates that the alloy has a higher carbon content than standard 321 alloy.

The alloy is very resistant to rust, especially in hot places like the aerospace and petrochemical industries. It also has a good resistance to intergranular corrosion and is resistant to pitting and crevice corrosion in chloride-containing environments. The alloy is strong at high temperatures. It can be used for exhaust manifolds, furnace parts, and heat exchangers.

Chemical Composition of 321/321H

The chemical composition of 321 stainless steel, also known as UNS S32100 or 1.4541, is as follows:

  • Carbon (C): 0.08% max
  • Manganese (Mn): 2.00% max
  • Silicon (Si): 1.00% max
  • Phosphorus (P): 0.045% max
  • Sulfur (S): 0.03% max
  • Chromium (Cr): 17.0-19.0%
  • Nickel (Ni): 9.0-12.0%
  • Titanium (Ti): 5xC min
  • Iron (Fe): balance

The chemical composition of alloy 321H (UNS S32109) and 1.4878 is as follows:

Carbon: 0.04-0.10%
Manganese: 2.00% maximum
Phosphorus: 0.045% maximum
Sulfur: 0.030% maximum
Silicon: 0.75% maximum
Chromium: 17.00-19.00%
Nickel: 9.00-12.00%
Titanium: 5x(C+N) 0.70% maximum
Nitrogen: 0.10-0.25%
Iron: Balance


Alloy 321H contains small amounts of columbium and tantalum, typically around 0.10% each. These elements enhance its stability when exposed to high temperatures.

The alloy's composition may differ a bit based on the manufacturer and the specific grade of the alloy. It is always recommended to consult the manufacturer's data sheet for the exact composition of the alloy in a given application.

321 and 321H are both variations of the alloy known as stainless steel 321. They have similar chemical compositions and are often used interchangeably in industry.

The main difference between the two is that 321H has a higher carbon content, which gives it improved high-temperature strength.

Physical & Mechanical Properties of 321/321H

Physical Properties:

  • Density: 0.28 lb/in3 (7.99 g/cm3)
  • Melting point: 2550-2650°F (1399-1454°C)

Mechanical Properties:

  • Tensile strength: 90 ksi (620 MPa)
  • Yield strength: 45 ksi (310 MPa)
  • Elongation: 40%
  • Hardness: Rb 95
  • Impact strength: 20 ft-lb (27 J)

321/321H is rust resistant and has strong properties.

This makes it ideal for hot applications such as furnace parts, heat exchangers, and boilers.

321 Stainless Steel Grade Series

There are several variants of stainless steel 321, each with slightly different chemical compositions and properties. Some examples include:

  • 321F: This variant is a stabilised version of 321 and is used in applications where high temperatures are a concern. It is stabilised with titanium to prevent carbide precipitation.
  • 321L: This variant has lower carbon content than 321 and 321H, which makes it more resistant to intergranular corrosion. It is often used in welding applications.
  • 321H: As I mentioned before, this variant has higher carbon content than 321, which improves its high temperature strength.
  • 321Ti: This variant is similar to 321F but uses titanium instead of niobium as the stabilising element.
  • 321LN: This variant is a low-carbon, nitrogen-strengthened version of 321. It offers improved toughness and resistance to intergranular corrosion.

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