Haynes® 25
Haynes 25 (L605) is a cobalt-nickel-chromium-tungsten alloy that combines excellent high-temperature strength with good oxidation resistance up to 1800°F (980°C). It is the strongest of the fabricable cobalt alloys and offers superior resistance to sulfidation and metal galling.
- 一般的なフォーム： Sheet, Strip, Bar, Wire.
- 主な特徴 High strength + Galling Resistance.
- Environment: Excellent in sulfur-containing atmospheres.
- 製作： Good formability and weldability.
Haynes 25 is the preferred material for gas turbine parts and industrial furnace components where both high heat and wear are present. Its cobalt base makes it inherently more resistant to galling (surface damage caused by sliding friction) than nickel-based alloys, making it ideal for bearings and seal rings.
Wear & Galling Resistance
The cobalt matrix provides exceptional resistance to wear and seizing, crucial for components that rotate or slide against each other at high temperatures.
High Temperature Strength
Retains high tensile and creep strength at temperatures up to 1800°F, outperforming many stainless steels and nickel alloys.
Sulfidation Resistance
Excellent resistance to hot corrosion in atmospheres containing sulfur, marine salts, and other harsh contaminants.
| エレメント | コンテンツ（%） |
|---|---|
| コバルト | 50.0 min (Balance) |
| クロム（Cr） | 19.0 - 21.0 |
| タングステン（W） | 14.0 - 16.0 |
| ニッケル（Ni） | 9.0 - 11.0 |
| 鉄（Fe） | 最大3.0 |
| マンガン (Mn) | 1.0 - 2.0 |
| カーボン（C） | 0.05 - 0.15 |
*Note: The high Tungsten content contributes significantly to its solid-solution strengthening.
| 製品形態 | 規格（AMS） |
|---|---|
| バー、鍛造品、リング | AMS 5759 |
| シート、ストリップ、プレート | AMS 5537 |
| ワイヤー | AMS 5796 |
| プロパティ | 代表値（室温） |
|---|---|
| 引張強度 | 145 - 160 ksi (1000 - 1100 MPa) |
| 降伏強さ（0.2%オフセット） | 65 - 80 ksi (450 - 550 MPa) |
| 伸び | 30 - 50 % |
| 硬度（ロックウェルC） | 20 - 25 HRC (Annealed) |
ガスタービン
Combustion chambers, afterburner parts, turbine rings, and blades.
Bearings & Bushings
Ball bearings and races requiring high temperature wear resistance.
Industrial Furnaces
High-temperature muffles, kiln liners, and conveyor belts.
Medical Implants
Occasionally used in specialized surgical implants due to biocompatibility and strength (ASTM F90).
Need Haynes 25 (L605)?
We maintain inventory of Haynes 25 sheet and bar stock. Certified to AMS specifications.
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