INCONEL® alloy MA 758 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of INCONEL® alloy MA 758

AMS INCONEL® alloy MA 758

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This page is mainly introduced the INCONEL® alloy MA 758 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of INCONEL® alloy MA 758,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

INCONEL® alloy MA 758 is an oxide-dispersionstrengthened (ODS) nickel-chromium superalloy, made by mechanical alloying. It is a development of the wellestablished aerospace superalloy, INCONEL alloy MA 754, with its chromium content increased to 30%, to improve its performance in corrosive environments at high temperatures. The alloy’s high-temperature strength is enhanced by the use of yttrium oxide for dispersion strengthening.

In addition to its strength and corrosion resistance at high service temperatures, it is readily fabricated and can be hot formed into a range of shaped components for use in thermal processing applications. INCONEL alloy MA 758 is used in some of the most demanding applications for high-temperature metals and alloys. For example, for furnace skid rails to transport heavy steel billets and slabs, at 1260°C(2300°F) and above, and for the bowl-shaped

components used to spin molten glass, at around 1200°C (2200°F), to produce fiberglass for thermalinsulation.

It is used in a range of thermal processing applications, from furnace components, such as hearth rollers, to jigs, tools, and other fabrications for supporting workpieces through heat-treatment processes. It has been specified for a fuel atomizer application in diesel engines.

  • Steel Garde:INCONEL® alloy MA 758
  • Type:Superalloys
  • Country:USA
  • Standard:AMS
  • Application:It is used in a range of thermal processing applications, from furnace components, such as hearth rollers, to jigs, tools, and other fabrications for supporting workpieces through heat-treatment processes. It has been specified for a fuel atomizer applica

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.05
Cr   30.00
Al   0.30
Ti   0.50
Yttrium oxide (Y2O3)   0.60
Fe   1.00
Ni   Bal

Mechanical Properties

Tensile strength 712~416 σb/MPa
Yield Strength 493 σ 0.2 ≥/MPa
Elongation 54 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 778~762 -
HRC 30 -

Physical Properties

Thermal expansion 54-04 e-6/K
Thermal conductivity 54-33 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1661-8481 째C
Density 1252-5032 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
INCONEL® alloy MA 758 Superalloys Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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