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Cast Grade: HK 40

OVERVIEW: High temperature material with increased strength for more highly stressed applications.  Good resistance to oxidizing or reducing process flow. Service Limit 1025 degrees Celsius (1875 degrees Fahrenheit).

TYPICAL USES: Calcining tubes, cement kiln parts, pier caps with temperature fixtures and hardware, radiant tubes, retorts.

MetalTek Grade: MTEK HK-40

Similar Specifications

Cast UNS: J94204

Cast Grade: HK 40

Cast ASTM: A297, A351, A608

Typical Chemical Composition (% by wt.)

Cr: 23 - 27

Mn: 1.50

Ni: 19 - 22

Si: 1.75

C Max: 0.35 - 0.45

Minimum Mechanical Properties

Brinell Typical: 170

Tensile, ksi: 62

Tensile, MPa: 430

Yield, ksi: 35

Yield, MPa: 240

Elongation %: 10

Heat Treatment: NOT HEAT TREATED