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Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti, UNS S31635 steel is austenitic grade stabilized with titanium, resistant to intergranular corrosion, pitting corrosion, most acids and salts in moderate concentrations. It is characterized by relatively good strength properties at elevated temperatures and good weldability. It exhibits significantly better resistance to crevice and pitting corrosion compared to X5CrNi18-10 / 1.4301 steelThe addition of Titanium in the grade plays the role of the additional carbide-forming element, which helps to maintain a stable concentration of chromium during heat treatment, and prevents intergranular corrosion during welding.
X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti, UNS S31635 steel is used in shipbuilding, chemical, dyeing, brewing, off-shore, pharmaceutical, textile, petrochemical, plastics and paper industries, in the production of chemical tanks, heat exchangers, fittings and installations for the production of chemical reagents, components - bolts, nuts working in contact with salts, parts and components of ships and ships, medical implants, surgical implants, springs, in construction for elements of balustrades, frames, ornaments, welded fittings, installations, parts of machines producing rubber.
| ITEM | Standard Number | Descriptions |
|---|---|---|
| 1 | EN 10028-7 | Flat products made of steels for pressure purposes - Part 7: Stainless steels |
| 2 | EN 10088-1 | Stainless steels - Part 1: List of stainless steels |
| 3 | EN 10088-2 | Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes |
| 4 | EN 10088-3 | Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes |
| 5 | EN 10088-4 | Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes |
| 6 | EN 10088-5 | Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes |
| 7 | EN 10216-5 (2004) | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes |
| 8 | EN 10217-7 | Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes |
| 9 | EN 10222-5 | Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels |
| 10 | EN 10250-4 | Open die steel forgings for general engineering purposes - Part 4: Stainless steels |
| 11 | EN 10253-3 | Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements |
| 12 | EN 10253-4 | Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements |
| 13 | EN 10263-5 | Steel rod, bars and steel wire for cold heading and cold extrusion - Part 5: Technical delivery conditions for stainless steels |
| 14 | EN 10272 | Stainless steel bars for pressure purposes |
| 15 | EN 10296-2 (2005) | Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel |
| 16 | EN 10297-2 (2005) | Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.080 | |||
| Si | 1.00 | |||
| Mn | 2.00 | |||
| P | 0.045 | |||
| S | 0.015 | |||
| Cr | 16.50 | 18.50 | ||
| Mo | 2.00 | 2.50 | ||
| Ni | 10.50 | 13.50 | ||
| Ti | 5×C | 0.70 |
| Tensile strength | 354～217 | σb/MPa |
| Yield Strength | 232 | σ 0.2 ≥/MPa |
| Elongation | 75 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 941～068 | - |
| HRC | 30 | - |
| Thermal expansion | 99-50 | e-6/K |
| Thermal conductivity | 54-51 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 3621-3057 | 째C |
| Density | 9883-6007 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
| Steel Grade | Specification | Processing range(mm) |
| X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti, UNS S31635 Stainless Steels | Round Bar and Hollow Bar | Φ1 to Φ2000 |
| Square and Flat Steel | Φ10 to Φ100 | |
| Plate and Sheet | 0.08-800(Thickness)*10-1500(Width)*Length | |
| Tube or Pipe | OD:Φ4-410; WT:1-35 mm; Lenght:10-12000 | |
| Coil and Strip Steel | THK:0.1mm Width:1500mm | |
| Forged | Ring/Cylindrical/Disk |