MA754
UNS N07754
MA754 (UNS N07754) is a mechanically alloyed nickel-chromium matrix dispersion-strengthened with Y2O3, an oxide-dispersion-strengthened composite that holds creep strength to near its melting point and is rated for service to about 1100 °C.
Reference datasheet — MA754 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
MA754 grades and fills
MA754 is supplied in one standard condition, ASHIP-UNRX.
Supply forms, finishes and certifications
Ways MA754 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
BAR-LDefault | Bar/extrusion, longitudinal | Supply form |
BAR-T | Bar/extrusion, long-transverse orientation | Supply form |
SHEET | Sheet / plate, recrystallized | Supply form |
What is MA754?
MA754 (UNS N07754) is a mechanically alloyed nickel-chromium matrix dispersion-strengthened with Y2O3, an oxide-dispersion-strengthened composite that holds creep strength to near its melting point and is rated for service to about 1100 °C. Room-temperature properties in the default condition are 585 MPa yield, 965 MPa tensile, 21% elongation and 149 GPa modulus; stock is bar (longitudinal or transverse) and sheet, usually given a directional recrystallisation anneal for coarse elongated grains. Limits are severe: machinability rates 12, it cannot be fusion welded, properties are strongly anisotropic, and availability and cost are those of a specialty powder product. Cast single-crystal or DS superalloys are the alternative for rotating hardware. MA754 has a density of 8.3 g/cm³ (0.3 lb/in³), heavier than 97% of composite grades. MA754 has a yield strength of 585 MPa (84.8 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 89% of composite grades. Elongation at break is 21% and the elastic modulus is 149 GPa (21.6 Msi).
What is MA754 used for?
- turbine vanes
- combustor components
- high-temperature fasteners
Advantages
- Ductile — tolerates forming and impact — 21%, better than 97% of composite grades
- Good UV / weathering resistance — 100/100, better than 93% of composite grades
- High service temperature — 1,100°C (2,012 °F), better than 92% of composite grades
- Polishes to a fine finish — 60/100, better than 90% of composite grades
- High strength — 585 MPa (84.8 ksi), better than 89% of composite grades
Limitations
- Heavy — 8.3 g/cm³ (0.3 lb/in³), worse than 97% of composite grades
- Difficult to machine — 12/100, worse than 89% of composite grades
MA754 properties
Typical room-temperature values; bars are the position among composite grades.
Physical1
MA754 has a density of 8.3 g/cm³ (0.3 lb/in³), heavier than 97% of composite grades.
Mechanical8
MA754 has a yield strength of 585 MPa (84.8 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 89% of composite grades. Elongation at break is 21% and the elastic modulus is 149 GPa (21.6 Msi).
Thermal6
MA754 is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 12.9 W/m·K (7.45 BTU/hr·ft·°F), better than 76% of composite grades. Thermal expansion is 12.6 µm/m·K (7 µin/in·°F).
Electrical1
MA754 has an electrical resistivity of 1.06×10⁻⁶ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (78/100), worse than 52% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of MA754 takes about 260 MJ of energy and emits 17 kg of CO₂ — more than 57% of composite grades. Typical recycled content is 0%.
Manufacturability2
MA754's machinability is not recommended (12/100, worse than 89% of composite grades).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the composite family
Yield strength against density for every composite grade FabDigit runs. MA754 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with MA754
Is MA754 easy to machine?
Very difficult to machine: the Y2O3 dispersoid abrades tooling and the matrix work-hardens strongly. Use solid carbide or ceramic tooling at low speed with heavy feed and copious coolant, or switch to grinding, EDM or electrochemical machining.
Can MA754 be welded?
Not suited to fusion welding — melting breaks up the dispersoid distribution and forms fine equiaxed grains, losing creep strength. Join by diffusion bonding, brazing or mechanical fastening.
Can MA754 be formed, bent or molded?
Produced from mechanically alloyed powder by hot extrusion or hot rolling, then given a directional recrystallisation anneal to develop coarse elongated grains. Formability of finished product is limited and cold forming is effectively not feasible.
MA754 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cr | 19 – 21 | 20 |
| Ti | 0.3 – 0.6 | 0.5 |
| Al | 0.15 – 0.45 | 0.3 |
| Feresidual | ≤ 1.5 | 1 |
| C | ≤ 0.1 | 0.05 |
| Y2O3dispersed yttria particles introduced by mechanical alloying | 0.5 – 0.7 | 0.6 |
| Nibalance, about 78% | balance |
What surface finishes work on MA754?
Can be ground and polished. In service it relies on a self-generated Cr2O3 scale for oxidation resistance; aluminide or MCrAlY coatings can be added where hot-corrosion resistance must be increased.
Equivalent designations
Standards and trade names that resolve to MA754 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- N07754
How much does MA754 cost?
MA754 is a high-cost composite ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
MA754 — frequently asked
What is MA754 used for?
MA754 is typically used for turbine vanes, combustor components and high-temperature fasteners. In short: creep strength to 1100 °C; Y2O3-strengthened ODS superalloy; static hot-section parts only.
What is the yield strength of MA754?
MA754 has a typical yield strength of 585 MPa (84.8 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 89% of composite grades.
Is MA754 easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 89% of composite grades). Very difficult to machine: the Y2O3 dispersoid abrades tooling and the matrix work-hardens strongly. Use solid carbide or ceramic tooling at low speed with heavy feed and copious coolant, or switch to grinding, EDM or electrochemical machining.
Can MA754 be welded?
Not suited to fusion welding — melting breaks up the dispersoid distribution and forms fine equiaxed grains, losing creep strength. Join by diffusion bonding, brazing or mechanical fastening.
What surface finishes work on MA754?
Can be ground and polished. In service it relies on a self-generated Cr2O3 scale for oxidation resistance; aluminide or MCrAlY coatings can be added where hot-corrosion resistance must be increased.
Can MA754 be formed, bent or molded?
Produced from mechanically alloyed powder by hot extrusion or hot rolling, then given a directional recrystallisation anneal to develop coarse elongated grains. Formability of finished product is limited and cold forming is effectively not feasible.
What is the maximum service temperature of MA754?
MA754 is rated for continuous use to about 1,100°C (2,012 °F), and briefly to 1,300°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does MA754 cost?
MA754 is a high-cost composite ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- INCONEL alloy MA754 technical bulletin — Special Metals Corporation (2004)
- ASM Specialty Handbook: Heat-Resistant Materials / Superalloys II — ASM International (1997)
- UNS N07754 designation listing — SAE/ASTM Unified Numbering System (2017)
- High-temperature ODS alloy property compilations — NASA/NIST technical literature (1995)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.