ASTM B425

This specification covers nickel-iron-chromiummolybdenum- copper alloy (UNS N08825 and UNS N08221)* in the form of hot-finished and cold-drawn rounds, squares, hexagons, and rectangles.

Chemical Properties

Element	UNS N08825	UNS N08221

Note A: Element shall be determined arithmetically by difference.

Mechanical Properties

Alloy	Condition	Tensile Strength min, psi (Mpa)	Yield Strength (0.2 % offset) min, psi(Mpa)	Elongation in 2 in. or 50 mm (or 4D), min, %
UNS N08825	Annealed: Hot-finished, cold–drawn	85 (586)	35 (241)	30A
UNS N08221	All sizes annealed	79 (544)	34 (235)	30

Note A: Not applicable to diameters or cross sections under 3⁄32 in. (2.4 mm).