(Alloy 263) Strip & Foil, AMS 5872, MSSR 7036 

Applications 

Heat treat equipment 

Description 

Haynes® 263 is an age-hardenable nickel-cobalt-chromium-molybdenum alloy designed specifically to combine very good strength properties with excellent fabrication characteristics in the annealed condition. While its strength at elevated temperatures is not quite as high as materials such as Waspaloy or alloy R-41, it is far easier to form or weld than these alloys. Alloy 263 exhibits excellent intermediate temperature tensile ductility, and is not normally subject to strain age cracking problems common for gamma prime strengthened alloys. 

Chemistry Typical 

Nickel: Balance 
Cobalt: 19.00 - 21.00 
Chromium: 19.00 - 21.00 
Molybdenum: 5.60 - 6.10 
Titanium: 1.9-2.4 
Titanium + Carbon: 0.04-0.08 
Aluminum: .0.60 max 
Manganese: 0.60 max 
Silicon: 0.40 max 
Iron: 0.70 max 
Boron: 0.005 max 
Copper: 0.20 max 
Sulfur: 0.007 max 
Silver: 0.0005 max 
Bismuth: 0.0001 max 

Physical Properties 

Density: 0.302 lbs/in3, 8.36 g/cm3

Electrical Resistivity: micro-ohm-in, (micro-ohm-cm): 
70 °F (21 °C): 45.3 (115) 

Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C)
70 - 200 °F (25 - 100 °C): 6.2 (11.1) 
70 - 400 °F (25 - 200 °C): 6.7 (12.1) 
70 - 600 °F (25 - 300 °C): 7.1 (12.7) 
70 - 800 °F (25 - 400 °C): 7.2 (12.8) 
70 - 1000 °F (25 - 500 °C): 7.6 (13.6) 
70 - 1200 °F (25 - 600 °C): 7.9 (13.9)
70 - 1400 °F (25 - 700 °C): 8.3 (14.7) 
70 - 1600 °F (25 - 800 °C): 9.0 (15.4) 
70 - 1800 °F (25 - 900 °C): 9.9 (17.0) 

Thermal Conductivity: BTU-in/ft-°F (W/m-°K) 
70 °F (21 °C): 81 (11.7) 
200 °F (100 °C): 89 (13.0) 

400 °F (200 °C): 103 (14.7) 
600 °F (300 °C): 115 (16.3) 
800 °F (400 °C): 128 (18.0) 
1000 °F (500 °C): 141 (19.7) 
1200 °F (600 °C): 154 (21.2) 
1400 °F (700 °C): 167 (23.0) 
1600 °F (800 °C): 182 (24.7) 
1800 °F (900 °C): 195 (26.8) 

Modulus of Elasticity: KSI (MPa)
32.1 x 103 (221 x 103) in tension 

Melting Range: 2370 - 2470 °F (1300 - 1355 °C) 

Forms 

Coil - Strip, Foil, Ribbon  Wire - Profile, Round, Flat, Square 

Mechanical Properties at Room Temperature 

Annealed: Typical 

Ultimate Tensile Strength:
* Yield Strength: (0.2% offset)* 
Elongation:* 
Hardness: 
Gauges up to 0.010 inches: HV 256 max 
Gauges over 0.010 inches: Rb 100 max 

*Contact Ulbrich Technical Service for additional information.

Properties: Tempered

Haynes® 263 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information. 

Heat Treat Capabilities: Typical

Aged at 1472 °F 
Yield Strength: (0.2% offset): 87 KSI nom (600 MPa nom) 
Elongation: 37% nom

Additional Properties

Corrosion Resistance

Haynes® 263 exhibits good resistance to oxidizing combustion gas environments at temperatures  up to about 1600 °F (870 °C).  Refer to NACE (National Associate of Corrosion Engineers) for recommendations. 

Finishes

#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required. 
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.  #2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.  #BA- Bright annealed cold rolled and bright annealed 
#CBA- Course bright annealed cold rolled matte finish and bright anneal 
#2 - Cold Rolled 
#2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part.  Polished - Various grit finish for specific polish finished requirements.  *Not all finishes are available in all alloys - Consult sales for applicable finishes.

Wire Finishes

XC - Extra Clean Bright Annealed or Bright Annealed and Cold Rolled Grease - Ultra bright finish (for decorative applications)  Soap - Soap coating on tempered wire to act as lubricant.  * Contact Ulbrich Wire with special finish requests.

Cold Forming

Haynes® 263 has excellent forming characteristics. The alloy has excellent ductility in the annealed condition, and thus may also be formed by cold working. Intermediate annealing in the temperature range from 1900 to 2000 °F may be needed for complex component forming operations. All hot or cold-worked parts should be annealed and rapidly cooled in order to restore the best balance of properties. 

Welding

Haynes® 263 can be welded by both manual and automatic welding methods, including gas tungsten arc (TIG), gas metal arc (MIG), electron beam and resistance welding. Matching  composition filler wire is generally used for welding alloy 263.  For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods". 



Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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