Nickel-chromium alloy, INCONEL 754, annealed

INCONEL 754, annealed, Designation

Wrought Ni-Cr alloy: Inconel MA 754
Condition	Annealed
UNS number	N07754
US name	ASTM Grade N07754; AMS 2269

INCONEL 754, annealed, Tradenames

INCONEL MA754

Special Metals Corp. (USA)

INCONEL 754, annealed, Typical uses

Aerospace applications include gas turbine components and other extreme service parts.

INCONEL 754, annealed, Composition detail

Al (aluminum)	0.2	–	0.5	%
C (carbon)	0	–	0.05	%
Cr (chromium)	19	–	23	%
Fe (iron)	0	–	2.5	%
Ni (nickel)	73.4	–	80.5	%
Ti (titanium)	0.3	–	0.6	%

INCONEL 754, annealed, Physical properties

Density

8.22

–

8.38

g/cm³

INCONEL 754, annealed, Mechanical properties

Young’s modulus	149	–	203	GPa
Specific stiffness	17.9	–	24.5	MN.m/kg
Yield strength (elastic limit)	566	–	596	MPa
Tensile strength	841	–	1020	MPa
Specific strength	68.1	–	71.9	kN.m/kg
Elongation	22.1	–	27.9	% strain
Compressive strength	566	–	596	MPa
Flexural modulus	145	–	153	GPa
Flexural strength (modulus of rupture)	566	–	596	MPa
Shear modulus	55	–	57	GPa
Bulk modulus	137	–	156	GPa
Poisson’s ratio	0.323	–	0.337
Shape factor	22
Hardness – Vickers	169	–	187	HV
Elastic stored energy (springs)	825	–	1140	kJ/m³
Fatigue strength at 10^7 cycles	480	–	680	MPa
Fatigue strength model (stress range) _{Parameters: Stress Ratio = -1, Number of Cycles = 1e7cycles}	445	–	733	MPa

INCONEL 754, annealed, Impact & fracture properties

Fracture toughness	147	–	163	MPa.m^0.5
Toughness (G)	115	–	166	kJ/m²

INCONEL 754, annealed, Thermal properties

Melting point	1370	–	1430	°C
Maximum service temperature	900	–	950	°C
Minimum service temperature	-273			°C
Thermal conductivity	13.7	–	14.8	W/m.°C
Specific heat capacity	431	–	449	J/kg.°C
Thermal expansion coefficient	11.9	–	12.5	µstrain/°C
Thermal shock resistance	234	–	321	°C
Thermal distortion resistance	1.11	–	1.22	MW/m
Latent heat of fusion	285	–	300	kJ/kg

INCONEL 754, annealed, Electrical properties

Electrical resistivity	105	–	110	µohm.cm
Electrical conductivity	1.57	–	1.64	%IACS
Galvanic potential	-0.15	–	-0.07	V

INCONEL 754, annealed, Magnetic properties

Magnetic type

Non-magnetic

INCONEL 754, annealed, Optical, aesthetic and acoustic properties

Transparency	Opaque
Acoustic velocity	4220	–	4960	m/s
Mechanical loss coefficient (tan delta)	1e-4	–	0.001

INCONEL 754, annealed, Processing properties

Metal casting	Unsuitable
Metal cold forming	Acceptable
Metal hot forming	Limited use
Metal press forming	Acceptable
Metal deep drawing	Limited use
Machining speed	4.88 m/min
Weldability _{Notes: Preheating is not required, post weld heat treatment is required}	Good

INCONEL 754, annealed, Durability

Water (fresh)	Excellent
Water (salt)	Excellent
Weak acids	Excellent
Strong acids	Excellent
Weak alkalis	Excellent
Strong alkalis	Excellent
Organic solvents	Excellent
Oxidation at 500C	Excellent
UV radiation (sunlight)	Excellent
Galling resistance (adhesive wear) _{Notes: Bronze or zinc alloy dies should be used to minimize galling.}	Limited use
Flammability	Non-flammable

INCONEL 754, annealed, Corrosion resistance of metals

Stress corrosion cracking
_{Note: Rated in chloride; Other susceptible environments: Hydroxide}

Not susceptible

INCONEL 754, annealed, Notes

INCONEL 754, annealed, Warning

All nickel compounds should be regarded as toxic. Some can cause cancer and/or fetal abnormalities.

INCONEL 754, annealed, Other notes

INCONEL is a registered trademark of the INCO group of companies. This alloy is one of the few materials that resists corrosion in hot, strong solutions of Magnesium Chloride.

As of September 1999 , INCONEL, INCOLOY, MONEL, NIMONIC, INCO-WELD, NILO, BRIGHTRAY, CORRONEL and UDIMET have become registered trademarks of Special Metals Corporation

INCONEL 754, annealed, Standards with similar compositions

USA: UNS N07754

Tradenames: INCONEL ALLOY MA 754, MA-754