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Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
High-nickel austenitic stainless steel for parts and components of chemical apparatus used mainly in the production of urea. The grade is suitable for working at elevated temperatures. X1CrNiMoN25-22-2,1.4466,1.4465,X1CrNiMoN25-25-2,AISI 310MoLN,UNS S31050 steel is used in the paper, nitrogen, pharmaceutical, petrochemical and cellulose industries.
| ITEM | Standard Number | Descriptions |
|---|---|---|
| 1 | EN 10088-1 | Stainless steels - Part 1: List of stainless steels |
| 2 | EN 10028-7 | Flat products made of steels for pressure purposes - Part 7: 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 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 | 0.020 | |||
| Si | 0.70 | |||
| Mn | 2.00 | |||
| P | 0.025 | |||
| S | 0.010 | |||
| Cr | 24.00 | 26.00 | ||
| Mo | 2.00 | 2.50 | ||
| Ni | 21.00 | 23.00 | ||
| N | 0.10 | 0.16 |
| Tensile strength | 204～777 | σb/MPa |
| Yield Strength | 587 | σ 0.2 ≥/MPa |
| Elongation | 76 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 774～825 | - |
| HRC | 30 | - |
| Thermal expansion | 22-31 | e-6/K |
| Thermal conductivity | 78-92 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 0105-5606 | 째C |
| Density | 8836-7581 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
| Steel Grade | Specification | Processing range(mm) |
| X1CrNiMoN25-22-2,1.4466,1.4465,X1CrNiMoN25-25-2,AISI 310MoLN,UNS S31050 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 |