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Chemical Composition

Identification Symbol Grade Elements Composition %
UNS N02200 26 chromium, 6 nickel,
3.5 molybdenum with
nitrogen and copper
255
Nickel, minA 99.0
Copper, max 0.25
Iron, max 0.40
Manganese, max 0.35
Carbon, max -
Silicon, max 0.35
Sulfur, max 0.01

Mechanical Properties

Condition and Diameter or Distance Between Parallel Surfaces, in. (mm) Tensile Strength, min, psi (MPa) Yield Strength (0.2 % offset), min. psi (MPa)A Elongation in 2 in. or 50 mm or 4D,min %
Cold-worked (as worked):
Rounds, 1 (25.4) and under 80 000 (550) 60 000 (415) 10B
Rounds over 1 to 4 (25.4 to 101.6) incl. 75 000 (515) 50 000 (345) 15
Squares, hexagons, and rectangles, all sizes 65 000 (450) 40 000 (275) 25B
Hot-worked:
All sections, all sizes 60 000 (415) 15 000 (105) 35C
Rings and disksD - - -
Annealed:
Rods and bars, all sizes 55 000 (380) 15 000 (105) 40B
Rings and disksE - - -
Forging quality
All sizes F F F