Product Description

Type 301 Stainless Steel Pipe Factory:

Holic Oil Pipeline Co., LTD.

Type 301 Stainless Steel Pipe Basics:

Type 301 Stainless Steel is an austenitic chromium-nickel stainless steel that provides high strength and good ductility when cold worked. The chromium and nickel contents are lowered to increase the cold work-hardening rate. This generates higher tensile strengths when cold rolled with a lower loss of ductility than with Types 302 and 304. The grade is essentially non-magnetic when annealed. When cold worked, it becomes slightly more magnetic than other standard austenitic stainless steels.

Applications

• Aircraft structural parts
• Trailer bodies
• Architectural (roof drainage/door frames, etc.)
• Auto body trim and wheel covers
• Utensils and tablewear
• Conveyor parts

Item Name: 301 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.

Chemical Composition:

Element	Type
Carbon	0.15 max.
Manganese	2.00 max.
Sulfur	0.030 max.
Phosphorus	0.045 max.
Silicon	0.75 max.
Chromium	16.00 – 18.00
Nickel	6.00 – 8.00
Nitrogen	0.10 max.

Mechanical Properties:

Type	Yield Strength 0.2% offset (KSI)	Tensile Strength (KSI)	% Elongation (2″ Gauge length)	Hardness Rockwell
301 Ann (typical)	40	110 min.	60	HRB 85
301 ¼ Hard	75 min.	125 min.	25 min.	HRC 25 – 32(typical)
301 ½ Hard	110 min.	150 min.	18 min.	HRC 32 – 37(typical)
301 ¾ Hard	135 min.	175 min.	12 min.	HRC 37 – 41(typical)
301 Full Hard	145 min.	185 min.	8 min	HRC 41 – 46(typical)

Formability

Type 301 can be readily formed and drawn. Due to its high workhardening rate, intermediate annealing may be necessary for severe drawing and forming operations. Type 301 may not be suitable in certain severe forming applications where multiple forming operations are required.

Heat Treatment

Type 301 is non-hardenable by heat treatment. Annealing: Heat to 1900 – 2050 °F (1038 – 1121 °C), then water quench. Stress Relief Annealing: Heat to 500 – 900 °F (260 – 482 °C), then 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 similar weldability than the most common alloy of this stainless class, Type 304L Stainless Steel. A major difference is the high C content for this alloy, which can cause the weld heataffected-zones to be susceptible to intergranular corrosion in certain environments. When a weld filler is needed, AWS E/ER 308 is most often specified. Type 301 Stainless Steel is well known in reference literature and more information can be obtained in the following ways:

1. ANSI/AWS A5.9, A5.22 and A5.4 (filler metals, minimum UTS and elongation).

2. “Welding of Stainless Steels and Other Joining Methods,” SSINA,(800:982-0355).

3. ANSI/AWS B2.1.009:2002 (GTAW 300’s @ 0.50 in. – 0.14 in.).

4. ANSI/AWS B2.1-8-024:2001 (GTAW 300’s @ 0.125 in. – 1.5 in.).

5. ANSI/AWS B2.1-8-013:2002 (SMAW 300’s @ 0.050 in. – 0.14 in.).

6. ANSI/AWS B2.1-8-025:2001 (SMAW 300’s @ 0.125 in. – 1.5 in.).

7. ANSI/AWS B2.1-8-005:2002 (GMAW 300’s @ 0.050 in. – 0.14 in.).

Our advantages:

As a leading brand of oil pipeline products in China, Holic^® is working on providing high quality 301 Stainless Steel Pipes and Tubes with most competitive price.