Manufacturer, stockist and supplier · Supplying GCC, Southeast Asia, Europe, United States, United Kingdom & India

ramesh@brighttubes.in · +91 98200 74585

Nickel Alloys · Tubes · ASTM B444 / B704

Inconel 625 Tubes

In short: Inconel 625 tube to ASTM B444 or B704 is used in seawater exchangers, control lines, bellows and aerospace hydraulic and exhaust tubing.

N06625
UNS number
8.44
density, g/cm³
3.1 / 3.2
EN 10204 certificates
6
Inconel 625 product forms
Quote Inconel 625 tubes →Sizes and weights
Inconel 625 tube weightCalculated at 8.44 g/cm³: 6.4×0.89 0.13 kg/m; 9.5×1.24 0.27 kg/m; 12.7×1.24 0.38 kg/m; 12.7×1.65 0.48 kg/m; 15.9×1.24 0.48 kg/m; 19.1×1.65 0.76 kg/m; 19.1×2.11 0.95 kg/m; 25.4×1.65 1.04 kg/m; 25.4×2.11 1.30 kg/m; 31.8×1.65 1.32 kg/m; 38.1×1.65 1.59 kg/m; 38.1×2.11 2.01 kg/m. Inconel 625 tube weight8.44 g/cm³ 6.4×0.89: 0.13 kg/m6.4×0.899.5×1.24: 0.27 kg/m9.5×1.2412.7×1.24: 0.38 kg/m12.7×1.2412.7×1.65: 0.48 kg/m12.7×1.6515.9×1.24: 0.48 kg/m15.9×1.2419.1×1.65: 0.76 kg/m19.1×1.6519.1×2.11: 0.95 kg/m19.1×2.1125.4×1.65: 1.04 kg/m25.4×1.6525.4×2.11: 1.30 kg/m25.4×2.1131.8×1.65: 1.32 kg/m31.8×1.6538.1×1.65: 1.59 kg/m38.1×1.6538.1×2.11: 2.01 kg/m38.1×2.11 2.0 OD × wall, mm · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Inconel 625 in tubes

High strength without age hardeningPREN > 50: excellent pitting and crevice resistanceImmune to chloride SCCGrade 1 (annealed) and Grade 2 (solution-annealed) conditions

Control and instrument tubing offshore needs seawater resistance and high strength in a thin wall; 625 provides both.

Aerospace uses 625 tubing for strength and oxidation resistance at temperature.

Specification

How to specify Inconel 625 tubes

OD 3 mm to about 127 mm (¼" to 5") typical, wall 0.5 mm to 12 mm; BWG or mm; straight lengths up to about 30 m, U-bent to drawing

Inconel 625 tubes ASTM B444 / B704
Inconel 625 tubes: ASTM B444 / B704
Specification
ASTM B444 / B704
UNS
N06625
EN / W.Nr.
2.4856
Order by
OD × wall, coil or straight

Sizes and weights

Inconel 625 tubes sizes, weighed at 8.44 g/cm³

Other sizes on request. For general tubes information, such as manufacturing routes and end finishes, see the tubes guide.

Inconel 625 tube weights at 8.44 g/cm³
OD mmWall mmkg/m
6.350.890.129
9.531.240.273
12.701.240.377
12.701.650.483
15.881.240.481
19.051.650.761
19.052.110.948
25.401.651.039
25.402.111.303
31.751.651.317
38.101.651.595
38.102.112.014
50.802.112.724
50.802.773.528

Chemistry

Inconel 625 composition

UNS
N06625
EN / W.Nr.
2.4856 · NiCr22Mo9Nb
Density
8.44 g/cm³
PREN
≈ 51
Inconel 625 chemical composition, % (ASTM B443)
ElementLimit, %Why it matters
Ni58.0 min
Cr20.0 – 23.0
Mo8.0 – 10.0
Nb + Ta3.15 – 4.15
Fe5.0 max
C0.10 max
Mn0.50 max
Si0.50 max
Al0.40 max
Ti0.40 max
Co1.0 max

Limits per ASTM B443; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%10%20%30%40%50%60% Ni Cr Mo Co
Main alloying elements of Inconel 625: bars show the permitted range (ASTM B443).

Questions

About Inconel 625 tubes

Is 625 tube used for control lines?

Yes, for downhole and subsea control lines.

B444 or B704?

B444 seamless; B704 welded tube.

From enquiry to dispatch

How a Inconel 625 tubes order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

Need Inconel 625 tubes?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

Request a quote →Inconel 625 grade page
Request a Quote Call
WhatsApp