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317 317L stainless steel pipe
Types of Stainless Steel
Stainless steels are steel alloys that contain more than 10.5% chromium with excellent corrosion resistance. Chromium reacts strongly with oxygen to form a very thin, invisible, stable oxide film on the surface of the stainless steel. This film is called the passive layer and forms rapidly in ordinary atmospheres. If it is damaged, the film usually heals spontaneously. It is this passive layer that gives stainless steel its corrosion resistance.
There are many different stainless steels, with different amounts of alloying elements added to give the best balance of corrosion resistance, mechanical properties and cost.
The stainless steels can be divided into five groups – austenitic, ferritic, duplex, martensitic and precipitation hardening. Each group has different dominant characteristics, and there are several grades within each group.
Austenitic Grades of Stainless Steel
Austenitic stainless steels are easy to work and weld, and have excellent ductility, toughness and corrosion resistance with good strength. They contain 17 to 25% chromium and 8 to 20% nickel, and may contain other elements to achieve the desired properties. The most common extra element is molybdenum, which greatly improves corrosion resistance. Austenitic stainless steels are usually used in the annealed condition, when they have a useful range of mechanical and physical properties. Strength can be increased by cold working, but not by heat treatment. Welding of this stainless steel grade is straightforward, although welding procedures are a little different to those used for carbon steel. Austenitic stainless steels are non-magnetic in the annealed condition, but will become slightly magnetic when cold worked.
Advantage
317 stainless steel, also known as UNS S31700 and Grade 317, is primarily comprised of 18% to 20% chromium and 11% to 15% nickel along with trace amounts of carbon, phosphorus, sulfur, silicon and balanced with iron.
UNS S31700/S31703 commonly known as Stainless Steel 317/317L Dual Certified is the low carbon content version of Stainless Steel 317 for welded structures.
Features and advantages of both Stainless Steel 317 and 317/317L Dual Certified include increased strength, corrosion resistance (including crevice and pitting), higher tensile strength and a higher stress-to-rupture ratio. Both grades resist pitting in acetic and phosphoric acids. With respect to cold working of Stainless Steel 317 and 317/317L Dual Certified, stamping, shearing, drawing and heading can all be successfully performed. In addition, annealing can be performed on both grades between 1850 F and 2050 F, followed by rapid cooling. Furthermore, all common hot working methods are possible with Stainless Steel 317 and 317/317L Dual Certified, between 2100 F and 2300 F.
Product Details
Stainless steel pipe is primarily used in piping systems for the transport of fluids or gases. We manufacture steel pipe from a steel alloy containing nickel as well as chromium, which give stainless steel its corrosion-resistant properties. Stainless steel pipe resists oxidation, making it a low-maintenance solution that is suitable for high temperature and chemical applications. Because it is easily cleaned and sanitized, stainless steel pipe is also desired for applications involving food, beverages, and pharmaceutical applications.
317L stainless steel pipe is a brand of stainless steel produced according to the American ASTM standard. Belonging to heat-resistant steel, 317L is equivalent to China's 00Cr19Ni13Mo3 stainless steel pipe. 317 contains 18.0-20.0% chromium, 11.0-15.0% nickel, and 3.0-4.0% molybdenum.
The 317L stainless steel pipe is made of 0Cr19Ni13Mo3 ultra-low carbon steel, which has better intergranular corrosion resistance than 0Cr19Ni13Mo3
317L stainless steel pipe heat treatment: solid solution treatment (℃) 1010-1150 rapid cooling
Mechanical Properties of Austenitic Steel after Solution Treatment for 317 Stainless Steel Pipe (GB/T4237-92)
Product Parameters
| Chemical Material Composition of SS 317/317L seamless pipes | |||||||||
| Grade | Ni | Mn | P | C | S | Si | Cr | Mo | N |
| 317 | 11 – 14 | 2 max | 0.040 max | 0.08 max | 0.03 max | 1 max | 18 – 20 | 3 – 4 | – |
| SS 317 Seamless Pipes Mechanical Properties | |
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35% |
Product Name | Stainless steel tube / pipe |
Type | Seamless or Welded |
Material (ASTM) | 201 202 304 304L 309s 310s 316 316L 316TI 317L 321 904L S32205/custom |
Material (DIN) | 1.4301 1.4306 1.4541 1.4401 1.4404 1.4571 1.4539 1.44621.4410 1.4833 1.4845 |
Outter Diameter (OD) | 3-1220mm/custom |
Thickness | 0.5-50mm/custom |
Length | 6000mm 5800mm 12000mm or Customized |
Surface Finished | No.1 No.3 No.4 HL 2B BA 4K 8K 1D 2D |
Technique | Cold Drawn or Hot rolled |
Standard | ASTM AISI DIN JIS GB EN |
Application | Construction, Industry, decoration and foodstuff etc. |
Monthly Supply | 5000 Tons |
Delivery Time | 7-10 Working Days after Deposit |
Package | Plywood Case/Pallet or Other Export Package Suitable for Long Distance Shipping |
End/Edge | Plain Mill |
Service | OEM/ODM service |
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