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321 Stainless Steel Coil Tube

Haosteel is professional manufacturer and supplier of 321 Stainless Steel Coil Tube. Quality guaranteed, On-time delivery, After-sales warranty.

 

Standard: 

ASTM A269/A312/A213/A249/A554 

Grade:

321

Delivery:

Cold rolled  Hot rolled

Surface:

Mill, Pickled, HL, Polished, Mirror

Thickness:

0.2mm - 30mm

Outer Diameter

1mm--630mm

Length: 

 6000mm or as customer request

Mill:

Tisco, Jisco, Baosteel, etc.

Delivery time:

15 days in common


Description:

Type 321 is an austenitic chromium-nickel stainless steel containing Titanium which is recommended for parts fabricated by welding which cannot subsequently be annealed.Type 321 is a stabilized austenitic stainless steel similar to type 304 but with a titanium addition . This titanium addition reduces or prevents carbide precipitation during welding and in 800 – 1500°F (427 – 816°C) service. It also improves the elevated temperature properties of the alloy. Type 321 provides excellent resistance to oxidation and corrosion and possesses good creep strength.

 

Chemical composition:

C

Si

Mn

P

S

Cr

Ni

Ti

≤ 0.08

≤ 0.75

≤ 2.0

≤ 0.045

≤ 0.03

17.0 - 19.0

9.0 - 12.0

5(C=N)~0.7

 

Physical Properties:

Annealed:
Ultimate Tensile Strength – 75KSI min (515 MPA min)
Yield Strength (0.2% Offset) –30 KSI min (205 MPA min)
Elongation – 35% min
Hardness – HRB95max (217HV max) 

 

Applications:

Aircraft collector rings, exhaust stacks, carburetor air intensifier tubes, exhaust manifolds, flexible couplings, jet engine parts, mufflers, pressure vessels, tubing, fasteners, flexible metal hose and bellows.

  

Heat Treatment:

Type 321 is non hardenable by heat treatment. It can only be hardened by cold working.

  

Cold Forming:
321 can be readily formed and drawn. Like most other austenitic stainless steels, type 321 work hardens and may require annealing after severe forming.

 

Corrosion Resistance:

321 has excellent corrosion resistance equivalent to type 302 or 304 in the annealed condition and superior if a weldment in these grades has not been post-weld annealed or if the application involves service in the 800°F – 1600°F range.





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