Germany DIN DIN EN 10028-7, DIN EN 10088-1, DIN EN 10088-2, DIN EN 10088-3, DIN EN 10088-4, DIN EN 10216-5 (2004), DIN EN 10253-3, DIN EN 10253-4, DIN EN 10297-2 (2005), X1CrNi25-21 Specialsteel Flat products made of steels for pressure purposes - Part 7: Stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | X1CrNi25-21 | DIN | Germany | Flat products made of steels for pressure purposes - Part 7: Stainless steels | 
| C | Si | Mn | P | S | Cr | Mo | Ni | N | 
|---|---|---|---|---|---|---|---|---|
| ≤0.05 | ≤0.70 | ≤1.50 | ≤0.040 | ≤0.015 | 12.0 -14.0 | 0.30 -0.70 | 3.50 -4.50 | ≤0.020 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 244 (≥) | 336 (≥) | 33 | 11 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 422 | 
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.24 | - | |||
| 791 | 875 | - | 22.3 | 422 | - | ||
| 752 | - | 14 | 22.2 | 444 | 423 | 
Heat treated : 1325°C - 1666°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| X1CrNi25-21 | |||
| X1CrNi25-21 | |||
| X1CrNi25-21 | 
| DIN EN 10028-7 | Flat products made of steels for pressure purposes - Part 7: Stainless steels | DIN-EN-10028-7.pdf | 
| DIN EN 10088-1 | Stainless steels - Part 1: List of stainless steels | DIN-EN-10088-1.pdf | 
| DIN EN 10088-2 | Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes | DIN-EN-10088-2.pdf | 
| DIN 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 | DIN-EN-10088-3.pdf | 
| DIN EN 10088-4 | Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes | DIN-EN-10088-4.pdf | 
| DIN EN 10216-5 (2004) | Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes | DIN-EN-10216-5-(2004).pdf | 
| DIN EN 10253-3 | Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements | DIN-EN-10253-3.pdf | 
| DIN EN 10253-4 | Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements | DIN-EN-10253-4.pdf | 
| DIN EN 10297-2 (2005) | Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel | DIN-EN-10297-2-(2005).pdf | 
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