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Cast Grade: HP

OVERVIEW: Higher chrome and nickel content provides increased strength and resistance to both oxidation and carburization. Service limit 980 degrees Celsius (1800 degrees Fahrenheit).

TYPICAL USES: Heat treatment and calciner components, reformer and ethylene pyrolysis tubes and fittings.

MetalTek Grade: MTEK 25-35

Similar Specifications

Cast UNS: N08705

Cast Grade: HP

Cast ASTM: A297, HP (CENT, INVEST, SAND)

Typical Chemical Composition (% by wt.)

Cr: 24 - 28

Fe: Bal

Mn: 2.00 max

Ni: 33 - 37

Si: 2.50 max

C Max: 0.35 - 0.75

Minimum Mechanical Properties

Tensile, ksi: 62.5

Tensile, MPa: 430

Yield, ksi: 34

Yield, MPa: 235

Elongation %: 4.5

Heat Treatment: As Cast