UK B.S. BS T 72-T 73, T.73 Specialsteel Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | T.73 | B.S. | UK | Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa) | 
| C | Si | Mn | P | S | Cr | Ni | Mo | Ti | Cu | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.08 | 0.20 -1.00 | 0.50 -2.00 | ≤0.035 | ≤0.025 | 17.00 -19.00 | 9.00 -12.00 | ≤ ≥ | 5×C -0.50 | ≤0.50 | 
| 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) | 
|---|---|---|---|---|---|---|
| 627 (≥) | 571 (≥) | 14 | 14 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.23 | - | |||
| 699 | 348 | - | 33.3 | 114 | - | ||
| 276 | - | 44 | 21.2 | 323 | 214 | 
Heat treated : 1129°C - 1784°C
| BS T 72-T 73 | Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa) | BS-T-72-T-73.pdf | 
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