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Non-Ferrous Metals · Pipes · ASTM B466

Cupro-Nickel 90/10 Pipes

In short: CuNi 90/10 pipe to ASTM B466 / B467 or EEMUA 144 is used for shipboard and offshore seawater cooling, firemain and ballast systems, resisting seawater corrosion and biofouling.

C70600
UNS number
8.94
density, g/cm³
3.1 / 3.2
EN 10204 certificates
2
Cupro-Nickel 90/10 product forms
Quote Cupro-Nickel 90/10 pipes →Sizes and weights
Cupro-Nickel 90/10 pipe weight by sizeCalculated at 8.94 g/cm³: ½" 1.44 kg/m; ¾" 1.92 kg/m; 1" 2.85 kg/m; 1¼" 3.86 kg/m; 1½" 4.61 kg/m; 2" 6.20 kg/m; 2½" 9.84 kg/m; 3" 12.86 kg/m; 4" 18.31 kg/m; 6" 32.18 kg/m; 8" 48.45 kg/m; 10" 68.68 kg/m; 12" 84.13 kg/m. Cupro-Nickel 90/10 pipe weight by size8.94 g/cm³ ½": 1.44 kg/m½"¾": 1.92 kg/m¾"1": 2.85 kg/m1"1¼": 3.86 kg/m1¼"1½": 4.61 kg/m1½"2": 6.20 kg/m2"2½": 9.84 kg/m2½"3": 12.86 kg/m3"4": 18.31 kg/m4"6": 32.18 kg/m6"8": 48.45 kg/m8"10": 68.68 kg/m10"12": 84.13 kg/m12" 84.1 NPS, Sch 40S · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Cupro-Nickel 90/10 in pipes

Standard for seawater pipingNatural biofouling resistanceIron addition for erosion resistanceGood weldability and brazability

Copper-nickel naturally resists marine fouling and seawater corrosion at moderate velocities, which is why navies and shipyards use it widely.

Velocity limits apply; higher-velocity systems may use super duplex instead.

Specification

How to specify Cupro-Nickel 90/10 pipes

NPS ⅛" to 48" and larger (DN 6 – DN 1200+), schedules 5S to XXS, single random, double random and cut lengths

Cupro-Nickel 90/10 pipe cross-section, NPS 6 Sch 40S Engineering drawing showing outside diameter 168.28 mm and wall thickness 7.11 mm (ASTM B466 144). Wall thickness is exaggerated for clarity. OD 168.28 mm WT 7.11 mm NPS 6SCH 40S ASTM B466 144
Cupro-Nickel 90/10 pipes: ASTM B466 (seamless) / B467 (welded) / EEMUA 144
Specification
ASTM B466 (seamless) / B467 (welded) / EEMUA 144
UNS
C70600
EN / W.Nr.
CW352H
Designation
UNS C70600

Sizes and weights

Cupro-Nickel 90/10 pipes sizes, weighed at 8.94 g/cm³

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

Cupro-Nickel 90/10 pipe: wall (mm) / weight (kg/m) at 8.94 g/cm³, ASME B36.19M
NPSOD mmSch 5SSch 10SSch 40SSch 80S
½"21.341.65 / 0.912.11 / 1.142.77 / 1.443.73 / 1.84
¾"26.671.65 / 1.162.11 / 1.462.87 / 1.923.91 / 2.50
1"33.401.65 / 1.472.77 / 2.383.38 / 2.854.55 / 3.69
1¼"42.161.65 / 1.882.77 / 3.063.56 / 3.864.85 / 5.08
1½"48.261.65 / 2.162.77 / 3.543.68 / 4.615.08 / 6.16
2"60.331.65 / 2.722.77 / 4.483.91 / 6.205.54 / 8.53
2½"73.032.11 / 4.203.05 / 5.995.16 / 9.847.01 / 13.00
3"88.902.11 / 5.143.05 / 7.355.49 / 12.867.62 / 17.40
4"114.302.11 / 6.653.05 / 9.536.02 / 18.318.56 / 25.42
6"168.282.77 / 12.883.40 / 15.747.11 / 32.1810.97 / 48.47
8"219.082.77 / 16.833.76 / 22.748.18 / 48.4512.70 / 73.61
10"273.053.40 / 25.754.19 / 31.649.27 / 68.6812.70 / 92.86
12"323.853.96 / 35.584.57 / 40.989.53 / 84.1312.70 / 110.98

Chemistry

Cupro-Nickel 90/10 composition

UNS
C70600
EN / W.Nr.
CW352H
Density
8.94 g/cm³
Cupro-Nickel 90/10 chemical composition, % (ASTM B111 / B466)
ElementLimit, %Why it matters
Cu86.5 min
Ni + Co9.0 – 11.0
Fe1.0 – 1.8
Mn1.0 max
Zn1.0 max
Pb0.05 max

Limits per ASTM B111 / B466; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%10%20%30%40%50%60%70%80%90% Cu Mn Zn
Main alloying elements of Cupro-Nickel 90/10: bars show the permitted range (ASTM B111 / B466).

Questions

About Cupro-Nickel 90/10 pipes

What is EEMUA 144?

A UK specification for 90/10 copper-nickel seamless and welded pipe for seawater systems.

Does CuNi resist fouling?

Yes, copper-nickel resists marine biofouling better than most alloys.

From enquiry to dispatch

How a Cupro-Nickel 90/10 pipes 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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