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Cast Grade: CT15C

OVERVIEW: This is a low carbon, niobium strengthened alloy with excellent rupture ductility and thermal shock resistance.  Service limit 980 degrees Celsius (1800 degrees Fahrenheit).

TYPICAL USES: Petrochemical furnaces, including collection manifolds, headers, and transfer lines.

MetalTek Grade: MTEK 20-32Nb

Similar Specifications

Cast UNS: N08151

Cast Grade: CT15C

Cast ASTM: A297, A351 (CENT, INVEST, SAND)

Typical Chemical Composition (% by wt.)

Cr: 19.0 - 21.0

Fe: Bal

Mn: 0.50 - 1.50

Ni: 31.0 - 34.0

Si: 0.50 - 1.50

C Max: 0.05 - 0.15

Other: Nb (Cb) 0.50 - 1.50

Minimum Mechanical Properties

Tensile, ksi: 63

Tensile, MPa: 435

Yield, ksi: 25

Yield, MPa: 170

Elongation %: 20

Heat Treatment: As Cast or Solution Annealed