UK B.S. BS EN 10088-1, BS EN 10088-2, BS EN 10088-3, X1CrNiSi18-15-4 Specialsteel 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 and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | X1CrNiSi18-15-4 | Austenite | B.S. | UK | 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 | 
| C | Si | Mn | P | S | Cr | Ni | Mo | N | 
|---|---|---|---|---|---|---|---|---|
| ≤0.015 | 3.70 -4.50 | ≤2.00 | ≤0.025 | ≤0.010 | 16.50 -18.50 | 14.00 -16.00 | ≤0.20 | ≤0.11 | 
| 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) | 
|---|---|---|---|---|---|---|
| 825 (≥) | 959 (≥) | 14 | 33 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 21 | - | - | 0.14 | - | |||
| 688 | 428 | - | 34.3 | 321 | - | ||
| 143 | - | 24 | 32.2 | 234 | 134 | 
Heat treated : 1341°C - 1615°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| X1CrNiSi18-15-4 | |||
| X1CrNiSi18-15-4 | |||
| X1CrNiSi18-15-4 | 
| BS EN 10088-1 | Stainless steels - Part 1: List of stainless steels | BS-EN-10088-1.pdf | 
| BS EN 10088-2 | Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes | BS-EN-10088-2.pdf | 
| BS 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 | BS-EN-10088-3.pdf | 
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