ASTM B805 Specification

This specification covers nickel alloys UNS N07716, N07725, N07773, N07776, N09777, and N09925 in the form of hot or cold finished rounds, squares, hexagons, rectangles, and cold finished wire. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

Chemical Composition

Element Composition, Weight %
Alloy N07716 Alloy N07725 Alloy N07773 Alloy N07776 Alloy N09777 Alloy N09925
Carbon 0.03 max
 0.03 max
 0.03 max
 0.03 max
 0.03 max
 0.03 max
Manganese 0.20 max
 0.35 max
 1.00 max
 1.00 max
 1.00 max
 1.0 max
Phosphorous 0.015 max
 0.015 max
 0.030 max
 0.030 max
 0.030 max
 0.03 max
Sulfur
 0.010 max
 0.010 max
 0.010 max
 0.010 max
 0.010 max
 0.03 max
Silcon 0.20 max 0.20 max 0.50 max 0.50 max 0.50 max 0.5 max
Chromium 19.00-22.00 19.00-22.50 18.0-27.0 12.0-22.0 14.0-19.0 19.5-22.5
Nickel 59.00-63.00 55.00-59.00 45.0-60.0 50.0-60.0 34.0-42.0 42.0-46.0
Molybdenum 7.00-9.50 7.00-9.50 2.5-5.5 9.0-15.0 2.5-5.5 2.5-3.5
Columbium (Niobium) 2.75-4.00 2.75-4.00 2.5-6.0 4.0-6.0 0.10 max 0.5 max
Titanium 1.00-1.60 1.00-1.70 2.0 max 1.00 max 2.Cl-3.0 1.9-2.40
Aluminum 0.35 max 0.35 max 2.0 max 2.00 max 0.35 max 0.1--0.5
Iron remainderA remainderA remainderA
 remainderA remainderA 22.0 min
Other ... ... mo + 0.5 W = 2.5-5.5 ... ... Cu 1.5-3.0
Tungsten ... ... 6.0 max 0.5-2.5 ... ...
Note:

A. Determined arithmetically by difference.

Mechanical PropertiesA

Alloy Tensile Strength, min Yield Strength, min Elongation in 4D, % min Reduction of Area, % min
ksi MPa ksi MPa
N07716 and N07725 165 1137 120 827 20 35
N07773 and N07776 140 965 120 827 20 30
N09777 125 862 110 758 25 35
N09925B 140 965 105 724 18 25
N09925C 140 965 110 758 18 25
A. Properties after aging solution treated material. Aging treatment for UNS N07716 and N07725 consists of 1350°F (732°C) for 8 h followed by furnace cooling to 1150 to 1200°F (621 to 649°C), holding 8 h, and air cooling. See Note 2. Aging treatment for UNS N07773 consists of 1275°F (690°C) for 20 h followed by air cooling (see Note 2). Aging treatment for UNS N07776 consists of 1335°F (725°C) for 8 h followed by furnace cooling to 1155°F (625°C), holding 8 h, and air cooling (see Note 2). Aging treatment for UNS N09777 consists of 1330°F (720°C) for 8 h followed by furnace cooling to 1150°F (620°C), holding 8 h, and air cooling (see Note 2). Aging treatment for UNS N09925 consists of 1365°F (740°C), hold at temperature for 6 to 9 h, furnace cool to 1150°F (62°C), hold until total precipitation heat treatment time has reached 18 h, air cool or faster.
B. Cold worked, solution annealed and aged.
C. Hot worked, solution annealed and aged.