Nickel Alloys

Nickel Alloy 625

Nickel Alloy 625

Pipe and Tubing

 Sizes Standard Tolerances
ProductsODWallLengths and/or coilsGradesODWallLengths
Pressure & Corrosion Tubing

Meets or exceeds requirements for welded

Specifications: ASTM-B704, ASME-SB704, ASTM-B705, ASME-SB705

1/16" (1.59 mm) to 4" (101.6 mm)

Metric sizes available

0.010" (0.25 mm) to 0.220" (5.59 mm) Random or cut lengths up to 40' (12.9 m)

Coils to 1-1/2" OD

625
<5/8" (15.9 mm) ±0.005" (0.127 mm)
5/8" to 1-1/2" ±0.007"
>1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm)
>3" (76.2 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
±15% ±12.5% Randoms up to +2" (50.8 mm)

Cuts +1/8" (3 mm) -0"

Coils to 80,000' (24,384 m)

Nickel Alloy 625

Physical Properties in the Annealed Condition at -20°F to +100°F

   Tensile StrengthYield Strength      
AlloyUNS Desig-nationSpec.psiMPaksipsiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. Hard-nessModulus of Elasticity (x106 psi)Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)Thermal Conductivity (BTU-in/ ft2-h-°F)
625, GR 1 (Annealed) N06625 B704,
B705
120,000 827 120 60,000 414 60 30 — — 30.0 7.1 68
625, GR 2 (Solution Annealed) N06625 B704,
B705
100,000 690 100 40,000 276 40 30 — — 30.0 7.1 68
Nickel Alloy 625

Composition of Pipe and Tubing

Grade625
UNS DesignationN06625
Nickel (Ni) 58.0 Min. (Plus Cobalt)
Chromium (Cr) 20.0–23.0
Iron (Fe) 5.0 Max.
Molybdenum (Mo) 8.0–10.0
Titanium (Ti) Max. 0.40
Aluminum (Al) Max. 0.40
Cobalt (Co) Max. 1.0
Tungsten (W) —
Vanadium (V) Max. —
Copper (Cu) Max. 0.75
Manganese (Mn) Max. 0.50
Niobium (Nb) plus Tantalum 3.15–4.15
Carbon (C) Max. 0.10
Nitrogen (N) Max. —
Silicon (Si) Max. 0.5
Sulphur (S) Max. 0.015
Phosphorous (P) Max. 0.015
Other Elements —
Nickel Alloy 625

Product Range

AlloyUNS DesignationWerkstoff NR.Specifications*
625 N06625 2.4856 B/SB704, B/SB705
*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.