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Nickel Alloys · Tubes · ASTM B622 / B626

Hastelloy C276 Tubes

In short: Hastelloy C276 tube to ASTM B622 or B626 is used in chemical heat exchangers and condensers handling acids and chlorides.

N10276
UNS number
8.89
density, g/cm³
3.1 / 3.2
EN 10204 certificates
6
Hastelloy C276 product forms
Quote Hastelloy C276 tubes →Sizes and weights
Hastelloy C276 tube weightCalculated at 8.89 g/cm³: 6.4×0.89 0.14 kg/m; 9.5×1.24 0.29 kg/m; 12.7×1.24 0.40 kg/m; 12.7×1.65 0.51 kg/m; 15.9×1.24 0.51 kg/m; 19.1×1.65 0.80 kg/m; 19.1×2.11 1.00 kg/m; 25.4×1.65 1.09 kg/m; 25.4×2.11 1.37 kg/m; 31.8×1.65 1.39 kg/m; 38.1×1.65 1.68 kg/m; 38.1×2.11 2.12 kg/m. Hastelloy C276 tube weight8.89 g/cm³ 6.4×0.89: 0.14 kg/m6.4×0.899.5×1.24: 0.29 kg/m9.5×1.2412.7×1.24: 0.40 kg/m12.7×1.2412.7×1.65: 0.51 kg/m12.7×1.6515.9×1.24: 0.51 kg/m15.9×1.2419.1×1.65: 0.80 kg/m19.1×1.6519.1×2.11: 1.00 kg/m19.1×2.1125.4×1.65: 1.09 kg/m25.4×1.6525.4×2.11: 1.37 kg/m25.4×2.1131.8×1.65: 1.39 kg/m31.8×1.6538.1×1.65: 1.68 kg/m38.1×1.6538.1×2.11: 2.12 kg/m38.1×2.11 2.1 OD × wall, mm · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Hastelloy C276 in tubes

About 16% Mo, 15.5% Cr, 3.7% WExceptional resistance to reducing acids and chloridesUsable in the as-welded conditionPREN about 68–76

Exchanger tubes in acid service fail quickly in lesser alloys; C276 extends bundle life substantially.

Welded B626 tube is economical for larger bundles.

Specification

How to specify Hastelloy C276 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

Hastelloy C276 tubes ASTM B622 / B626
Hastelloy C276 tubes: ASTM B622 / B626
Specification
ASTM B622 / B626
UNS
N10276
EN / W.Nr.
2.4819
Order by
OD × wall, length or U-bend

Sizes and weights

Hastelloy C276 tubes sizes, weighed at 8.89 g/cm³

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

Hastelloy C276 tube weights at 8.89 g/cm³
OD mmWall mmkg/m
6.350.890.136
9.531.240.287
12.701.240.397
12.701.650.509
15.881.240.507
19.051.650.802
19.052.110.998
25.401.651.094
25.402.111.372
31.751.651.387
38.101.651.680
38.102.112.121
50.802.112.869
50.802.773.716

Chemistry

Hastelloy C276 composition

UNS
N10276
EN / W.Nr.
2.4819 · NiMo16Cr15W
Density
8.89 g/cm³
PREN
≈ 68 – 76
Hastelloy C276 chemical composition, % (ASTM B575)
ElementLimit, %Why it matters
NiBalance
Mo15.0 – 17.0
Cr14.5 – 16.5
Fe4.0 – 7.0
W3.0 – 4.5
Co2.5 max
C0.010 max
Si0.08 max
Mn1.0 max
V0.35 max

Limits per ASTM B575; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10%15%20% Mo Cr W Co Mn
Main alloying elements of Hastelloy C276: bars show the permitted range (ASTM B575).

Questions

About Hastelloy C276 tubes

B622 or B626 tube?

B622 seamless; B626 welded tube.

Is C276 tube used in condensers?

Yes, in acid-gas and chemical condensers.

From enquiry to dispatch

How a Hastelloy C276 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

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