UNS S32760 / F55

Super Duplex Stainless Steel for Aggressive Chloride-Containing Environments

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Certified material. Clear documentation.

Super Duplex UNS S32760 (F55) combines the desirable aspects of both austenitic and ferritic grades and gives significant life cycle cost advantages when used in severe and corrosive conditions. It has exceptional resistance to pitting, crevice corrosion and to stress corrosion cracking and have high strength combined weldability. High level of chromium, molybdenum and nitrogen contents result in a Pitting Resistance Equivalent number (PREN) of >40, providing pitting and crevice corrosion resistance superior to austenitic and duplex stainless steels in almost all corrosive media. It also provides higher strength than both austenitic and 22% Cr duplex stainless steels.

Supply Range

Range	Round Bars (Dia)	Plates (Thickness)
Min	1/2″ [6.35 mm]	1/2″ [6.35 mm]
Max	16″ [406 mm]	2″ [50.8 mm]

Available Categories

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Typical specification data

Technical reference

Final chemical, mechanical properties, dimensions and tolerances are confirmed against the governing specification and purchase order.

Chemical Properties

Range	C	Mn	Si	P	S	Ni	Cr	Cu	Mo	W
Min	-	-	-	-	-	6.00	24.00	0.50	3.00	0.50
Max	0.03	1.00	1.00	0.03	0.01	8.00	26.00	1.00	4.00	1.00

Mechanical Properties

-	Tensile Strength	Yield Strength (%0.2)	Yield Strength (%0.2)	Elongation in 2"	Elongation in 2"	Hardness	Hardness	Impact
Min	106 Ksi [730 MPa]	77 Ksi [530 MPa]	80 Ksi [550 MPa]	25 %	25 %	-	-	100 J
Max	135 Ksi [930 MPa]	-	-	-	-	270 HB	290 HB	-

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