Alloy C263

A precipitation-hardenable nickel-chromium-cobalt alloy, Alloy C263 exhibits excellent high-temperature strength up to 816˚C.

With the addition of molybdenum, Alloy C263 exhibits high strength and corrosion resistance along with good formability and weldability. The alloy has good oxidation resistance up to 982˚C

Inventory

Product form	Size range from	Size range to
Alloy C263 round bar	12.7 mm	152.4 mm
Alloy C263 sheet & plate	1 mm	38.1 mm
Alloy C263 welding wire	0.89 mm	2.36 mm

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Sheet & Plate
Welding Consumables
Round Bar

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Chemical Analysis

%	Ni	Cr	Mo	Cu	Co	C	Mn	Si	P	S	P	S	Fe	Ti	Al	Al+Ti	B	Bi
Min	Balance	19	5.6	0	19	0.01	0	0	0	0	0	0	0	1.9	0.3	2.4	0	0
Max	Balance	21	6.1	0.2	21	0.08	0.6	0.4	0.015	0.007	0.7	2.4	0.7	2.4	0.6	2.8	0.005	0.0001

Applications

Perfect for applications in the Aerospace industry

Alloy C263 can be used in a variety of applications including:

Rings for gas turbine
Low-temperature combustors
Transition liners
Engine casings

About Alloy C263

Alloy C263 has high strength up to 816˚C and excellent oxidation resistance up to 982˚C. The alloy has good formability, ductility, and weldability. In the annealed condition, this alloy has excellent ductility and can easily be formed by cold working.

Gas tungsten arc welding is normally carried out using argon shielding gas. Argon +5% hydrogen has been used. Alloy C263 base metal is normally welded in the annealed condition 1148°C, rapid cool. After welding, the assembly may be aged 8 hours at 798°C, air cool. Repair welding of alloy C263 components may be done in the age-hardened condition.

Alloy C263 combines properties which make it suitable for a variety of fabricated components in both aircraft and land-based turbine applications. Contact us for more information!

Properties

Density:: 8.359 g/cm³
Melting range:: 1300-1355°C
Hardness:: HRB
Specific Heat Capacity:: 461 J/kg.°C
Electrical Resistivity:: 1.15 µΩ.m

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Mechanical & Physical Properties

Mechanical & Physical Properties	21.1°C	93.3°C	148.9°C	204.4°C	315.6°C	371.1°C	426.7°C	537.8°C	595°C	648.9°C	705°C	760°C	815°C	982°C
Ultimate Tensile Strength /Mpa **	1004	958	958	911	880	849	849	834	-	819	-	-	-	108
0.2% Yield Strength /Mpa **	585	550	550	520	505	500	500	500	-	490	-	-	-	70
Reduction of area %	41	44	44	47	50	51	51	52	-	50	-	-	-	72
Elongation %	45	44	44	44	45	46	46	46	-	43	-	-	-	69
Minimum Creep 0.001% per hr, MPa	-	-	-	-	-	-	-	-	-	425	290	160	79	-
1,000 hr Rupture Strength, Mpa	-	-	-	-	-	-	-	690	565	440	310	185	100	47
Coefficient of Thermal Expansion /µm/m°C **	10.3	11.16	11.16	12.06	12.78	12.96	12.96	13.68	-	14.22	-	-	-	18.1
Thermal Conductivity /kcal/(hr.m.°C) **	10.04	11.036	11.036	12.77	14.26	15.872	15.872	17.48	-	19.096	-	-	-	24.51
Modulus of Elasticity / GPa **	221	219	219	212	205	198	198	192	-	185	-	-	-	143

Mechanical & Physical Properties

Mechanical & Physical Properties	21.1°C	93.3°C	148.9°C	204.4°C	315.6°C	371.1°C	426.7°C	537.8°C	595°C	648.9°C	705°C	760°C	815°C	982°C
Ultimate Tensile Strength /Mpa **	1004	958	958	911	880	849	849	834	-	819	-	-	-	108
0.2% Yield Strength /Mpa **	585	550	550	520	505	500	500	500	-	490	-	-	-	70
Reduction of area %	41	44	44	47	50	51	51	52	-	50	-	-	-	72
Elongation %	45	44	44	44	45	46	46	46	-	43	-	-	-	69
Minimum Creep 0.001% per hr, MPa	-	-	-	-	-	-	-	-	-	425	290	160	79	-
1,000 hr Rupture Strength, Mpa	-	-	-	-	-	-	-	690	565	440	310	185	100	47
Coefficient of Thermal Expansion /µm/m°C **	10.3	11.16	11.16	12.06	12.78	12.96	12.96	13.68	-	14.22	-	-	-	18.1
Thermal Conductivity /kcal/(hr.m.°C) **	10.04	11.036	11.036	12.77	14.26	15.872	15.872	17.48	-	19.096	-	-	-	24.51
Modulus of Elasticity / GPa **	221	219	219	212	205	198	198	192	-	185	-	-	-	143

Specifications

UNS Number:: N07263
Werkstoff Number:: 2.4650
Standards:: AMS 5966, 5886, 5872, 5872E, RRMS 33031/1 (MSRR7035), BS HR10

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