Haynes R-41 alloys have good creep and oxidation resistance, and are formed in different shapes. They are classified into three types such as cobalt-based, nickel-based, and iron-based super alloys. They have the ability to function at very high temperatures and under mechanical stress.
They can be strengthened by performing solid-solution hardening, work hardening, and precipitation hardening. The cobalt-based and nickel-based super alloys can be in the form of wrought or cast based on their application or composition.
Haynes(r) R-41 is a wrought nickel base high temperature and strength alloy. Double aging and solution heat treating are performed at low temperatures in order to increase its strength.
Haynes R-41 Chemical Composition | |||||||||||
Cr | Co | Mo | Fe | Ti | Al | Si | Mn | C | B | S | Ni |
17.5-20 | 10-12 | 9-10.5 | 5 max | 3-3.3 | 1.4-.8 | 0.5 max | 0.1 max | 0.04-0.12 | 0.003-0.1 | 0.015 max | remainder |
Haynes R-41 Physical Performance | ||
Properties | Metric | Imperial |
Density | 8.25g/cm3 | 0.298lb./in3 |
Melting point | 1333℃ | 2430℉ |
Thermal conductivity | 11.5W/mK | 80 BTU in/hr.ft.ft2.℉ |
Haynes R-41 Machinability:
Haynes(r) R-41 can be machined using conventional methods which are used for iron-based alloys. Commercial coolants are used for performing machining operations. Water-based coolants are used for performing high-speed operations such as milling, grinding or turning. Heavy lubricants are preferred for tapping, drilling, boring or broaching.
Haynes R-41 Forming:
Haynes(r) R-41 can be formed using all conventional techniques.
Haynes R-41 Welding:
Haynes(r) R-41 is welded using gas-tungsten arc welding, gas metal-arc welding, shielded metal-arc welding and submerged-arc welding methods.
Haynes R-41 Heat Treatment:
Haynes(r) R-41 is heat treated by annealing at 1080°C (1975°F) for 4 h followed by cooling. After this process, aging heat treatment is done at 760°C (1400°F) for 16 h followed by cooling.
Haynes R-41 Heat Forging:
Haynes(r) R-41 can be forged in the solution annealed condition.
Haynes R-41 Cold Working:
Haynes(r) R-41 is cold worked using standard tooling.
Haynes R-41 Annealing:
Haynes(r) R-41 is annealed at 1066 to 1080°C (1950 to 1975°F) for 4 h followed by cooling.
Haynes R-41 Aging:
Haynes(r) R-41 is aged at 760°C (1400°F) for 16 h followed by cooling.
Haynes R-41 Hardening:
Haynes R-41 Application：
Haynes(r) R-41 is used in high temperature and strength environments which require high oxidation resistance. It is also used in aircraft, gas turbine and land/marine, applications.
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