SS 321 Stainless steel pipe tube

SS321 is a stabilized austenitic stainless steel with a titanium addition of at least 5 times the carbon content. The addition of titanium reduces or prevents the sensitization of carbide precipitation during welding and when used in the 425-815°C temperature range. It also improves certain properties at elevated temperatures. SS321 has excellent resistance to oxidation and corrosion and has good creep strength. It is primarily used in oil refining equipment, pressure vessel piping, radiant superheaters, bellows and high temperature heat treatment equipment

The characteristics of SS321 stainless steel pipe are as follows:

High temperature resistance: SS321 stainless steel has excellent high temperature resistance and can withstand corrosion and oxidation in high temperature environment for a long time.

Corrosion resistance: SS321 stainless steel has excellent corrosion resistance and can resist corrosion in many chemical environments, including organic acids, alkalis and solvents.

Oxidation resistance: SS321 stainless steel has good oxidation resistance, can resist high temperature oxidation and extend service life.

Processing performance: SS321 stainless steel has good plasticity and weldability, and is easy to process into various shapes and sizes.

Mechanical properties: SS321 stainless steel has high tensile strength, yield strength and impact toughness, suitable for various engineering and structural applications.

Chemical element composition content: The chemical element composition content of SS321 stainless steel includes chromium (Cr), nickel (Ni), iron (Fe) and titanium (Ti). The proportion and combination of these elements give SUS321 stainless steel high temperature resistance, corrosion resistance and oxidation resistance.

Characteristics at high temperatures: SS321 has excellent resistance to oxidation and corrosion, and has good creep strength. It is mainly used in oil refining equipment, pressure vessel pipelines, radiation superheaters, bellows and high-temperature heat treatment equipment.

Resistance to intergranular corrosion: Due to the addition of titanium, SS321 stainless steel has better resistance to intergranular corrosion and high-temperature strength

 

Product   Name Stainless Steel Pipe/Tube
Standard ASTM,JIS,DIN,GB,AISI,DIN,EN
Material 201, 202, 301, 301L, 304, 304L, 316, 316L, 321, 310S, 904L, 410, 420J2, 430, 2205, 2507, 321H, 347, 347H, 403, 405, 409, 420, 430, 631, 904L, 305, 301L, 317, 317L, 309, 309S 310
Technique Cold drawn, Hot rolled, Cold   rolled and Others.
Side shape Round, square, rectangular,etc.
Outer   Diameter 20mm-1200mm   or Customizable
Thickness 6-3000mm or Customizable
Length 1-12m or Customizable
Surface   Treatment BA/2B/NO.1/NO.3/NO.4/8K/HL/2D/1D
Type Seamless, Welded.
Origin China
HS Code 7304319000
Delivery   Time {Delivery Time}
After-sales   Service 24 hours online.
Production   Capacity {Production Capacity}
Price Terms EXW, FOB, CIF, CRF, CNF or   Others.
Loading   Port {Port}
Section   Shape Round, Square, Rectangular, etc.
Payment   Term TT, LC,Cash, Paypal, DP,   DA,Western Union or Others.
Application 1. Tableware, cabinets, indoor   pipelines, water heaters, boilers, bathtubs
2.   Automotive parts
3.Medicale   quipment, building materials, chemicals, food industry, agriculture, ship   components, etc.
Packaging Bundle, PVC Bag, Nylon Belt,   Cable Tie, Standard export seaworthy package or as Request.
Processing   Service Bending, Welding, Decoiling,   Punching, Cutting and Others.
Tolerance ±1%
MOQ {MOQ}

 

 

Composition of Stainless Steel

 

Steel is an alloy of iron and carbon. Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements. Stainless steel’s corrosion resistance and

mechanical properties can be further enhanced by adding other elements, such as nickel, molybdenum, titanium, niobium, manganese, etc.

 

Grade C Si Mn P S Cr Ni Mo N Cu
201 ≤0.15 ≤0.75 5.5~7.5 ≤0.060 ≤0.03 16.00~18.00 3.5~5.5 0.08
202 ≤0.15 ≤1.00 7.5~10.00 ≤0.060 ≤0.03 17.00~19.00 4.0~6.0 ≤0.25  
301 ≤0.15 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 6.00~8.00    
302 ≤0.15 ≤1.00 ≤2.00 ≤0.035 ≤0.03 17.00~19.00 8.00~10.00    
304 ≤0.07 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.00~20.00 8.00~10.50    
304L ≤0.030 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.00~20.00 9.00~13.00    
310S ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 24.00~26.00 19.00~22.00    
316 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 10.00~14.00 2.00~3.00    
316L ≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 12.00~15.00 2.00~3.00    
321 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 17.00~19.00 9.00~13.00    
430 ≤0.12 ≤0.75 ≤1.00 ≤0.040 ≤0.03 16.00~18.00      
2205 ≤0.03 ≤1.00 ≤2.00 ≤0.030 ≤0.015 22.00~23.00 4.5~6.5 2.5~3.5    
2507 ≤0.03 ≤0.08 ≤1.20 ≤0.035 ≤0.015 24.00~26.00 6.00~8.00 3.0~5.0    
904L ≤0.02 ≤1.00 ≤2.00 ≤0.045 ≤0.035 19.00~23.00 23.00~28.00 4.0~5.0   1.0~2.0
INCONEL028 ≤0.03 ≤1.00 ≤2.50 ≤0.030 ≤0.030 ≤28.0 ≤34.0 ≤4.0   ≤1.4
MONEL400 ≤0.30 ≤0.5 ≤2.00 ≤0.024 ≥63.0   ≤34.0
INCONEL800 ≤0.10 ≤1.00 ≤1.50 ≤0.015 ≤23.0 ≤35 4.0~5.0 ≤0.75

 

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