1.4980 / Alloy 286
1.4980 / Böhler T200 / Alloy 286 / UNS S66286 – Precision ESR-Steel for Aerospace, Power Gen, Oil and Gas with Age-Hardenable Thermal Durability
Properties of 1.4980 / Böhler T200 / Alloy 286 / UNS S66286
Böhler T200 is an austenitic, precipitation-hardenable stainless steel with excellent high-temperature strength and outstanding corrosion resistance. It corresponds to material number 1.4980, is also known as Alloy 286, and complies with international standards such as EN X6NiCrTiMoVB25-15-2, UNS S66286, and VdTÜV WB 435/3.
Key Benefits:
- Excellent high-temperature strength up to approx. 704 °C
- Oxidation resistant up to 816 °C
- Precipitation hardenable through intermetallic phases (Al, Ti)
- Very good creep resistance at high temperatures
- Corrosion resistant in oxidizing and reducing environments
- Good weldability with appropriate pre- and post-treatment
Applications of 1.4980 / Böhler T200 / Alloy 286 / UNS S66286
Böhler T200 is preferred for demanding high-temperature applications, especially in:
- Gas turbines (blades, shafts, steam valves)
- Power generation (gas, steam, nuclear)
- Aerospace (Frame, components)
- Mechanical engineering (shafts, screws, bolts, nuts)
- Automotive engineering (turbochargers, piston rings, sensors)
- Piping and valve technology (flanges, fittings, pumps)
- Oil & gas (manifolds, valves, drilling tools and components)
Specification Overview
| Material number | 1.4980 |
| Alloy | A286 |
| EN designation | X6NiCrTiMoVB25-15-2 |
| UNS | S66286 |
| Böhler Grade | T200 |
| ASTM | A453 Gr.660 (similar) |
| VdTÜV | WB 435/3 |
| AMS | 5731, 5732 (comparable) |
| ASME | Code Case 1592 (comparable) |
| Wire | AMS 5731 / AMS 5732 / DIN EN 10269 |
Physical Properties:
| Material Density | 7,95 g/cm3 |
| Thermal conductivity (20 °C) | 13 W/(m K) |
| Electrical Resistivity | 0,91 Ω mm2/m |
| Coefficient of thermal expansion | 16,5 10-6 m/(m K) |
| Permeability µr | 1,007 |
| Thermal Expansion (20–100 °C) | 16.5 × 10⁻⁶/K |
Mechanical Properties:
In solution-annealed + precipitation-hardened condition:
Class A, B, C (ASTM A453)
| Tensile Strength Rm | approx. 270 N/mm² min. 895 MPa |
| Yield strength (Rp0.2) | min. 585 MPa |
| Hardness (HBW) | ca. 248 – 341 |
Class D up to diameter 63.5 mm (ASTM A453)
| Tensile Strength Rm | min. 895 MPa |
| Yield strength (Rp0.2) | min. 725 MPa |
| Hardness (HBW) | ca. 248 – 321 |
Class D from diameter 63.5 mm (ASTM A453)
| Tensile Strength Rm | min. 825 MPa |
| Yield strength (Rp0.2) | min. 655 MPa |
| Hardness (HBW) | ca. 248-321 |
Typical Chemical Composition:
Element Content acc. to VdTÜV Werkstoffblatt 453
| C | Si | Mn | P | S | Cr | Mo |
| ≤0,08 | ≤1,00 | ≤2,00 | ≤0,03 | ≤0,03 | 13,5–16,0 | 1,0–1,5 |
| Ni | V | Ti | B | AI | ||
| 24,0–27,0 | 0,1–0,5 | 1,9–2,3 | 0,003–0,010 | ≤ 0.350 |
Product Portfolio
Our company offers Alloy A-286 / UNS S66286 / 1.4980 in a wide range of forms and processing stages:
- Round bars (rolled or forged)
- Sheets and Plates – hot/cold rolled, solution annealed
- Wire
- Forgings
- Pre-material for further processing
- Machined components on request
All products are available in ESR quality (Electroslag Remelting process) and meet the highest standards of homogeneity and purity.
All information without guarantee and for informational purposes only.