Chemical Composition

Identification Symbol	Grade	Elements	Composition %
UNS C63200	26 chromium, 6 nickel, 3.5 molybdenum with nitrogen and copper 255	Aluminum	8.7–9.5 max
		Copper, incl silver	remainder
		Iron	3.5–4.3A max
		Nickel, incl cobalt	4.0–4.8A
		Manganese	1.2–2.0
		Silicon	0.10 max
		Tin	-
		Zinc, max	-
		Lead, max	0.02
		Arsenic, max	-
		Phosphorus, max	-

Mechanical Properties

Diameter or Distance Between Parallel Surfaces,A in. [mm]	Tensile Strength, min ksi [MPa]	Yield Strength, min ksi [MPa], at 0.5 % Extension Under Load	Elongation in 4 3 Diameter or Thickness of Specimen min, %B
up to 3 [80], incl	90 [620]	50 [345]	15
over 3 [80] to 5 [125], incl	90 [620]	45 [310]	15
over 5 [125] to 12 [300], incl	90 [620]	40 [275]	15
shapes, all sizes	90 [620]	40 [275]	15
bar and shapes all sizes	90 [620]	40 [275]	15