L605 Alloy®Standard specification ® for chromium-nickel-tungsten-cobalt alloy
Sheet Thickness:0.1mm~3.5mm
Plate Thickness:3.5mm~4.0mm
Bar Dia 32.0mm~Dia180.0mm
Products Application
Typical applications for this alloy have included:Gas turbine rotors,Nozzle diaphragm valves,
Springs,Bone drill bits,Heart valves.
Description
L-605 alloy is a nonmagnetic, chromium-nickel-tungsten-cobalt alloy possessing good oxidation and corrosion resistance as well as high strength properties at elevated temperatures. Although the aging response of L-605 is considered minimal when compared to typical age hardening alloys, it may be used in the cold worked and aged condition in certain instances. L-605 is generally melted using vacuum induction melting (VIM), followed by electroslag remelting (ESR). The finished mill product is supplied in the solution annealed or cold worked condition, depending on section size and application.
Parameter
TABLE 1 Chemical Requirement
Element Composition,%
Fe≤ 0.03
P≤ 0.03
S≤ 0.03
SI≤ 0.40
Ni 9.0-11.0
W 14.0-16.0
CR≤ 19.0~21.0
Mn≤ 0.20
C 0.05-0.15
Co remainder
TABLE 2 Physical Requirement
Property Target
Specific gravity 9.2
Density 0.3330 lb/in3
TABLE 3 Thermal Conductivity
70°F 21℃ 88.00 BTU-in/hr/ft2/°F
800°F 427℃ 134.0 BTU-in/hr/ft2/°F
1200°F 649℃ 153. BTU-in/hr/ft2/°F
TABLE 4 Coefficient of Linear Expansion
Temperature 10-6/°F 10-6/℃
70°F To 21℃ To
600 316 7.61 13.7
1000 583 8.31 14.9
1500 816 9.08 16.3
TABLE 5 Average Coefficient of Linear Expansion
70 to 600°F 21℃-316℃ 7.61 x 10-6 in/in/°F
70 to 1000°F 21℃-538℃ 8.31 x 10-6 in/in/°F
70 to 1500°F 21℃-816℃ 9.08 x 10-6 in/in/°F
TABLE 6 Mechanical properies
Modulus of Elasticity (E) 70°F/21℃ 35.3 x 103 ksi
Modulus of Rigidity (G) -12.6 x 103 ksi
Melting Range -2570 to 2620 °F
Magnetic Properties nonmagnetic in all conditions
Heat Treatment
Annealing
L-605 should be annealed at 2150/2250°F (1175/1230°C) for not less than 15 minutes, followed by water quenching or air cooling depending on section size. Typical annealed hardness is 20 HRC.
Workability
Hot Working
L-605 should be forged from approximately 2150°F (1177°C). Below 1850°F (1010°C) this alloy is difficult to hot work. The rate of cooling from the hot working or hot forging operation is not critical -air cooling is generally employed.
Cold Working
The strength levels developed by L-605 are primarily the result of cold working. Cold working can be accomplished by drawing, extruding, forging, swaging or a combination of these methods.The work hardening rate of this alloy is extremely high. Total cold work reduction generally should not exceed 40%.
Machinability
L-605 is machinable using conventional techniques; however, cobalt grades of high-speed steel or carbide tools combined with rigid machine setups are recommended.
L-605 is more difficult to machine than the austenitic stainless steels (i.e. Types 302, 304, 321, and 347 stainless). Generally, lower feeds, speeds and depths of cut are suggested.
A very high work hardening rate, generation of heat during cutting and high shear strength complicate machining.
Product Detail 
Why Us ?
1.Specialized in manufacturing high-precision alloy for 23+ years
2.We can tailoring your unique requirements with ASTM, UNS ,GOST, standards.
3. Good quality control in production process, ISO9001:2008, SGS, CQC, approved.
4. The whole process from raw material to finished products can be traced.
5. 40000 square meters workshop, advanced facilities and test equipment .
Our Serivce
1. Free Sampe with test report
2.Small Quantity accepted , if we have stocks, we can delivery as small as few kilogram to your specification.
3.Inspection before delivery
4.Response within 24hours
5.Good after service
