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Haynes® Alloy 25 (L605) (UNS R30605) Co 50.0, Cr 20.0, W 15.0, Ni 10.0, Fe 3.0 Mn 1.5

Excellent strength for continues service to 1800 ºF. Oxidation and carburization resistance to 1900 ºF. Galling resistant, with resistance to marine environments, acids and body fluids. Non-magnetic, even when severely cold reduced, can reach Rc 50 when cold reduced and aged. Resistant to hydrochloric and nitric acid at certain concentrations and temperatures, and wet chlorine environments at room temperature.
Unit of Measure

Specifications

Type

 N/A Bar

Size

 N/A 1.000 in

Alloy

 N/A L605

Physical

Density

 N/A 0.333 lb/in³

Specific Heat

 N/A 0.090 Btu/lb ºF

Melting Range

 N/A 2570 to 2620 ºF

Thermal Expansion Coefficient at 70 to 600 Degree Fahrenheit (ºF)

 N/A 7.61 x 10-6 in/in/ºF

Mechanical

Mechanical Type

 N/A Annealed

Tensile Strength

 N/A 122 ksi

Yield Strength

 N/A 69 ksi

Elongation

 N/A 41 %

Hardness

 N/A B93

Nominal Chemistry

Nickel (Ni)

 N/A 10

Maximum Iron (Fe)

 N/A 3

Chromium (Cr)

 N/A 20

Cobalt (Co)

 N/A Balanced

Tungsten (W)

 N/A 15

Manganese (Mn)

 N/A 1.5

Maximum Silicon (Si)

 N/A 0.4

Maximum Carbon (C)

 N/A 0.10

General Resistance

General Resistance

 N/A Temperature Oxidation

Unified Numbering System (UNS)

 N/A R30605

Werkstof

 N/A 2.4964

Sheet/Plate USA

 N/A AMS 5537

Bar/Rod USA

 N/A AMS 5759 F90

Forging USA

 N/A AMS 5759

Weld Wire

 N/A AMS 5796

Machinability Ratings

Speed Surface

 N/A 25 (L-605) : 35 ft/mmCold Worked: 15 ft/mm

Speed Percent (%) of B1112

 N/A 25 (L-605) : 21 Cold Worked: 9

Note

 N/A These machinability ratios must be recognized as approximate values. They are a reasonable guide to relative tool life and lower required for cutting. It is obvious, however, that variables of speed, cutting oil, feed and depth of cut will significantly affect these ratios.

Machining Section

N/A The alloys described here work harden rapidly during machining and require more power to cut than do the plain carbon steels. The metal is 'gummy', with chips that tend to be stringy and tough. Machine tools should be rigid and used to no more than 75% of their rated capacity. Both work piece and tool should be held rigidly; tool overhang should be minimized. Rigidity is particularly important when machining titanium, as titanium has a much lower modulus of elasticity than either steel or nickel alloys. Slender work pieces of titanium tend to deflect under tool pressures causing chatter, tool rubbing and tolerance problems.

Make sure that tools are always sharp. Change to sharpened tools at regular intervals rather than out of necessity. Titanium chips in particular tend to gall and weld to the tool cutting edges, speeding up tool wear and failure. Remember- cutting edges, particularly throw-away inserts, are expendable. Don't trade dollars in machine time for pennies in tool cost.

Feed rate should be high enough to ensure that the tool cutting edge is getting under the previous cut thus avoiding work-hardened zones. Slow speeds are generally required with heavy cuts. Sulfur chlorinated petroleum oil lubricants are suggested for all alloys but titanium. Such lubricants may be thinned with paraffin oil for finish cuts at higher speeds. The tool should not ride on the work piece as this will work harden the material and result in early tool dulling or breakage. Use an air jet directed on the tool when dry cutting, to significantly increase tool life.

Lubricants or cutting fluids for titanium should be carefully selected. Do not use fluids containing chlorine or other halogens (fluorine, bromine or iodine), in order to avoid risk of corrosion problems. The speeds are for single point turning operations using high speed steel tools. This information is provided as a guide to relative machinability, higher speeds are used with carbide tooling.

Applications

N/A

  • Gas turbine engine combustion chambers and afterburners
  • High temperature ball bearings and bearing races
  • Springs
  • Heart valves

Features

N/A

  • Outstanding high temperature strength
  • Oxidation resistant to 1800 ºF
  • Galling Resistant
  • Resistant to marine environments, acids and body fluids