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Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
X6CrNiNb18-10,1.4550,X5CrNiNb18-10,1.4546,AISI 347 used in cryotechnics, in the pharmaceutical industry, in the food industry - in food processing plants, dairies, sugar factories, breweries, in the fuel industry, i.e. in refineries and petrochemical plants.Steel intended for pipelines, autoclaves, transport tanks, heat exchangers, absorption towers, pumps, coolers, and reactors.
| 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 10088-5 | Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes |
| 6 | EN 10216-5 (2004) | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes |
| 7 | EN 10217-7 | Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes |
| 8 | EN 10222-5 | Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels |
| 9 | EN 10250-4 | Open die steel forgings for general engineering purposes - Part 4: Stainless steels |
| 10 | EN 10253-3 | Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements |
| 11 | EN 10253-4 | Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements |
| 12 | EN 10272 | Stainless steel bars for pressure purposes |
| 13 | EN 10296-2 (2005) | Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel |
| 14 | 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 | 17.00 | 19.00 | ||
| Mo | ||||
| Ni | 9.00 | 12.00 | ||
| Nb | 10×C | 1.00 |
| Tensile strength | 541～954 | σb/MPa |
| Yield Strength | 060 | σ 0.2 ≥/MPa |
| Elongation | 66 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 963～419 | - |
| HRC | 30 | - |
| Thermal expansion | 98-82 | e-6/K |
| Thermal conductivity | 24-70 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 3996-3780 | 째C |
| Density | 4711-9865 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
| Steel Grade | Specification | Processing range(mm) |
| X6CrNiNb18-10,1.4550,X5CrNiNb18-10,1.4546,AISI 347 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 |