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Nickel Alloy PK33/ Nimonic PK33

Technical Data Sheet

Alloy PK33 is a nickel- chromium - cobalt precipitation hardenable alloy but the addition of Molybdenum makes Alloy PK33 solid-solution strengthened. PK33 is commonly used in gas turbines as flame tubes because of its high temperature strength, creep resistance and welded sheet structures.

Chemical Composition Limits
Weight%	Ni	Cr	Mo	Fe	Al	Ti	C
PK33	Bal	16-20	5-9	1.0 max	1.7-2.5	1.5-3.0	0.07 max
Weight%	Cu	Si	Mn	Co	B	Zr	S
PK33	0.2 max	0.5 max	0.5 max	12.0-16.0	0.005 max	0.06 max	0.015 max

Typical Mechanical Properties

Material	Condition 20°C	0.1 % Proof Stress MPa	Tensile Strength MPa	Elongation %	Reduction of Area %
PK33 Bar	Heat Treatment 2h/1100°C/AC +4h 850°C/AC	664	1127	33	41

Availability
PK33 is available in Sheet, Plate, Round Bar, Flat Bar, Forging Stock, Extruded Section and Welding Wire. For all stock availability contact Sales.

Specifications
DTD5057
AFNOR NC 19 KDu/v
NIMONIC PK33

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.