321 Stainless Steel Pipe
Holic® offers 321 Stainless Steel Pipes and Tubes of ASTM A240 and AMS 5510.
Stainless 321 is a type of chromium-nickel steel which was developed with enhanced intergranular-corrosion resistance. It is resistant to atmospheric corrosion, sterilizing solutions and different types of organic and inorganic chemicals.
Item Name: 321 Stainless Steel Pipe.
Brand: HOLIC®.
Standard: ASTM A240, AMS 5510
Product Description
Type 321 Stainless Steel Pipe Factory:
Holic Oil Pipeline Co., LTD.
Type 321 Stainless Steel Pipe Basics:
Stainless 321 is a type of chromium-nickel steel which was developed with enhanced intergranular-corrosion resistance. It is resistant to atmospheric corrosion, sterilizing solutions and different types of organic and inorganic chemicals.
Item Name: 321 Stainless Steel Pipe.
What is Stainless Steel Pipe?
Stainless steel refers to the alloy steel which can resist the corrosion of weak corrosive medium such as air, steam, water and chemical corrosive medium such as acid, alkali and salt. The corrosion resistance of stainless steel depends on the alloy elements contained in the steel. The basic alloy elements of stainless steel include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc.
Stainless steel belongs to alloy steel, a kind of high alloy steel, which contains a lot of chromium, enough nickel and a certain amount of titanium. The role of chromium is to make the steel corrosion resistant, and the role of nickel is to reduce the austenitizing temperature of stainless steel. The total content of alloy elements can reach 10-28%, so it is a high alloy steel.
Advantages of stainless steel pipes
- Luster and Polishing surface
Our stainless steel is polished to ensure quality.
- Corrosion resistance
When the content of chromium atom in steel is not less than 12.5%, electrochemical corrosion can be prevented. Most stainless steel products are required to have good corrosion resistance, such as tableware, kitchen utensils, water heaters, water dispensers, etc. Some foreign buyers also test the corrosion resistance of the products.
- Excellent Solderability
Most of the finished products of stainless steel must have good weldability. Therefore, our stainless steel supplier can provide you with stainless steel with good weldability.
- Heat resistance
Stainless steel still has good physical and mechanical properties at high temperature.
Usage of stainless steel pipe
Although stainless steel pipes are higher cost to sources, according to its outstanding characteristics such as strength, anti rust, corrosion-resistance, stainless steel pipes have been applied in many industries and domains below
- Medical industry,
- Food and catering sector,
- Automotive and transportation industry,
- Construction and architecture domain,
- Energy and heavy industries.
Type 321 Stainless Steel is covered by the following specifications: AMS 5510, ASTM A240.
Chemical Composition: ASTM A240
| Element | Type 321 |
| Carbon | 0.08 max. |
| Manganese | 2.00 max. |
| Sulfur | 0.030 max. |
| Phosphorus | 0.045 max. |
| Silicon | 0.75 max. |
| Chromium | 17.00 – 19.00 |
| Nickel | 9.00 – 12.00 |
| Titanium | 5x(C+N) min. – 0.70 max. |
| Nitrogen | 0.10 max. |
Mechanical Properties:
| Type | Yield Strength 0.2% offset (KSI) | Tensile Strength (KSI) | % Elongation (2″ Gauge length) | Hardness Rockwell |
| 321 | 30 min. | 75 min. | 40 min. | HRB 95 max. |
Formability
Type 321 can be readily formed and drawn, however, higher pressures are required and more springback is encountered than for carbon steel and ferritic stainless steels. Like other austenitic stainless steels,Type 321 work hardens quickly and may require annealing after severe forming.The presence of certain alloying elements can make Type 321 more difficult to form than other austenitic grades such as 301, 304 and 305.
Heat Treatment
Type 321 is non-hardenable by heat treatment.Annealing: Heat to 1750 – 2050 °F (954 – 1121°C), then water quench or air cool.
Weldability
The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid weld ”hot cracking” by assuring formation of ferrite in the weld deposit. This particular alloy is generally considered to have comparable weldability to Types 304 and 304L. A major difference is the titanium addition that reduces or prevents carbide precipitation during welding. When a weld filler is
needed, either AWS E/ER 347 or E/ER 321 is most often specified.Type 321 is well known in reference literature and more information can be obtained in this way.
Our advantages:
As a leading brand of oil pipeline products in China, Holic® is working on providing high quality 321 Stainless Steel Pipes and Tubes with most competitive price.
