Stainless steel tube is typically measured by its outer diameter and can be used in a variety of applications including a number of structural applications.

Stainless Steel Seamless Tubes

Stainless Steel Tube is a hollow steel bar, a large number of pipes used for conveying fluids, such as oil, gas, water, gas, steam, heat exchanger, mechinical machine. In addition, engaging in bending, torsional strength of the same, lighter, and they are also widely used in the manufacture of mechanical parts and engineering structures. Also used in producing all kinds of conventional weapons, the barrel, artillery shells and so on. Range of Application

Considering the importance of outside and inside surface of stainless steel tubes for fluid power industry, Our mills are providing tubes that are free from scale, rust, seams, laps.

Standard (Norm)

  • Pipe Dimension
  • Pipe Material(Grade)
  • Chemical Composition
  • Mechanical Properties
  • Technology Flow chart
  • Range of Applications

Common Applications for Stainless Steel Tubing Stainless steel tubing has a number of uses in a wide variety of industries. It can be used during manufacturing in processing plants or can become part of a final product. Stainless steel tubing can also be used in pipelines to transport oil, gas, water, or chemicals. The stainless steel tubing that is supplied by SunnySteel can used in a variety of industries, including:

  • Machinery Parts
  • Food and Beverage Processing
  • Pharmaceutical
  • Biotechnology
  • Automotive
  • Marine
  • Construction
  • Chemical
  • Oil and Gas
Grade (UNS): 304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404);
316Ti(1.4571);
321(1.4541);309S(1.4833);310S(1.4845); 
317L(1.4438);321H(1.4878);347H(1.4550);
2205(1.4462) ;S31803,2507
Outside Dia: 6 – 325mm(1/4″ – 12.75″)
Wall Thickness: 0.50 – 22mm
Standards(Norm): EN 10216-5;DIN 17456;DIN 17458;DIN 17459
GB/T14975;T14976;T13296;GB5310;
ASTM A213;A269;A312;A511;A789;A790;
JIS G3459;G3463;
GOST 9940;GOST 9941;

the main requirement for stainless steels is that they should be corrosion resistant for a specified application or environment. The selection of a particular “type” and “grade” of stainless steel must initially meet the corrosion resistance requirements. Additional mechanical or physical properties may also need to be considered to achieve the overall service performance requirements.

Stainless Steel Tube Data

Chemical Composition

AISI TYPE CHEMISTRY-PERCENT TYPICAL CHARACTERISTICS
C MN P S SI CR NI OTHER
304 0.08 max 2.00 max 0.040 max 0.030 max .075 max 18.00-20.00 8.00-11.00 General purpose “300″ series grade for tubing applications.
304L 0.035 max 2.00 max 0.040 max 0.030 max 0.75 max 18.00-20.00 8.00-13.00 Low carbon type 304 where greater resistance to carbide precipitation is desired.
304H 0.04-0.10 2.00 max 0.040 max 0.030 max 0.75 max 18.00-20.00 8.00-11.00 Carbon modified for improved high temperature strength.
310 0.15 max 2.00 max 0.040 max 0.030 max 0.75 max 24.00-26.00 19.00-22.00 High resistance to scaling and oxidation up to 2000°F.
316 0.08 max 2.00 max 0.040 max 0.030 max 0.75 max 16.00-18.00 11.00-14.00 Mo 2.00-3.00 Better corrosion resistance than type 304 in reducing media. Good hi-temp strength.
316L 0.035 max 2.00 max 0.040 max 0.030 max 0.75 max 16.00-18.00 10.00-15.00 Mo 2.00-3.00 Low carbon type 316 where greater resistance to carbide precipitation is desired.
316H 0.04-0.10 2.00 max 0.040 max 0.030 max 0.75 max 16.00-18.00 11.00-14.00 Mo 2.00-3.00 Carbon modified for improved temperature strength.
317 0.08 max 2.00 max 0.040 max 0.030 max 0.75 max 18.00-20.00 11.00-14.00 Mo 3.00-4.00 Similar to type 316 but with better corrosion resistance and creep strength.
321 0.08 max 2.00 max 0.040 max 0.030 max 0.75 max 17.00-20.00 9.00-13.00 Ti 5XC-0.60 Titanium stabilized against carbide precipitation. Similar properties to type 304.
347 0.08 max 2.00 max 0.040 max 0.030 max 0.75 max 17.00-20.00 7.00-13.00 Gb + Ta 10XC-1.00 Columbium and tantalum stabilized against carbide precipitation.
21-6-9 0.04 max 8.00 max 0.060 max 0.030 max 1.00 max 19.00-21.50 5.50-7.50 N 0.15-0.40 High strength-to-weight ratio. Good corrosion resistance.
416 0.15 max 1.25 max 0.060 max 0.15 max 1.00 max 12.00-14.00 Hardenable by heat treatment. Free machining. Moderate corrosion resistance.

Mechanical Properties

TYPE TEMPER NOMINAL MECHANICAL PROPERTIES
TENSILE PSI YIELD PSI ELONG. % IN 2″ ROCKWELL HARDNESS
304 Annealed 85,000 35,000 55 RB80
1/8 Hard 105,000 75,000 20 RB95
304 L Annealed 80,000 30,000 55 RB75
1/8 Hard 105,000 75,000 20 RB95
304H Annealed 85,000 35,000 55 RB80
310 Annealed 95,000 45,000 45 RB85
316 Annealed 85,000 35,000 50 RB80
316L Annealed 80,000 30,000 50 RB75
316H Annealed 85,000 35,000 50 RB80
317 Annealed 90,000 40,000 45 RB85
321 Annealed 90,000 35,000 55 RB80
1/8 Hard 105,000 75,000 20 RB95
347 Annealed 95,000 40,000 50 RB85
21-6-9 Annealed 100,000 60,000 45 RB90
1/8 Hard 142,000 120,000 20 RC30
416 Annealed 75,000 35,000 20 RB95

The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.

 

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