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Cast Grade: HH

OVERVIEW: This heat resistant stainless steel alloy is very sensitive to composition balance, containing enough chromium for scaling resistance at high temperature.

TYPICAL USES: Convection furnace components, grate bars, rabble arms, radiant tubes, refractory support hardware.

MetalTek Grade: MTEK 25-12

Similar Specifications

Cast UNS: J93503

Cast Grade: HH

Cast ASTM: A297 (CENT, INVEST, SAND)

Typical Chemical Composition (% by wt.)

Cr: 24.0 - 28.0

Fe: Bal

Mn: 2.00 max

Ni: 11.0 - 14.0

Si: 2.00 max

C Max: 0.20 - 0.50

Minimum Mechanical Properties

Tensile, ksi: 75

Tensile, MPa: 515

Yield, ksi: 35

Yield, MPa: 240

Elongation %: 10

Heat Treatment: As Cast

HH33 contains ferrite