Cupro Nickel 66/30/2/2 (C71640)

UNS C71640EN CuNi30Fe2Mn2Common name 66/30/2/2
حالة المخزونProject supply
مدة التوريد6 - 10 weeks on enquiry

The desalination variant of 70/30. Raising iron and manganese to about 2% each stabilises the protective film under high velocity, sand-laden and partly deaerated brine, which is exactly the duty inside MSF evaporator heat recovery and reject sections. Where 70/30 tubes thin at the inlet ends, C71640 holds.

  • Iron and manganese enhanced film stability for sand-laden brine
  • Highest allowable velocity of the cupro nickel family
  • Standard retube material for MSF desalination plant
  • Supplied to EEMUA 144 / 146 with EN 10204 3.1 certification

الأشكال والمقاسات المتوفرة

الشكلنطاق المقاسات
الأنابيب غير الملحومة و الأنابيب1/8" - 12" NB seamless, 6 - 108 mm OD tube, 0.8 - 6 mm wall
الألواح3 - 50 mm thk condenser plate and tube sheet (ASTM B171)
الوصلات1/2" - 24" butt weld elbows, tees, reducers and stub ends
الفلنجات1/2" - 24", 150# - 300#, slip-on and weld neck

التركيب الكيميائي (%)

العنصرالحد الأدنىالحد الأقصى
CuRemainder-
Ni29.032.0
Fe1.702.30
Mn1.502.50
Pb-0.02

الخصائص الميكانيكية

الخاصيةالقيمةالوحدة
Yield Strength (0.2%)170 min (annealed)MPa
Tensile Strength415 min (annealed)MPa
Elongation28 min%
Hardness90 - 120HV

الخصائص الفيزيائية

الخاصيةالقيمةالوحدة
Density8.90g/cm3
Thermal Conductivity27W/m.K
Max Service Temperature400C
Max seawater velocity5.0m/s

التطبيقات النموذجية

MSF evaporator heat recovery and reject section tubing
High velocity brine and seawater lines
Condenser tubing in sand-laden intakes
Retube programmes replacing thinned 70/30 bundles

أسئلة متكررة

[ 02 ] درجات أخرى في Cupro Nickel

Cupro Nickel 90/10 Seamless Pipes

Cupro Nickel 90/10 Seamless Pipes

Mill indent
UNS C70600EN CW352H / CuNi10Fe1Mn

The default seawater alloy. 90% copper with 10% nickel and a controlled iron addition builds a protective cuprous oxide film in seawater, and the inherent copper toxicity stops macrofouling — barnacles and mussels do not settle, so cooling lines stay clean without chlorination. Specified for ship and platform seawater systems, firewater ring mains and condenser tubing where the velocity stays below about 3.5 m/s.

7 شكل متوفر
Cupro Nickel 70/30 Seamless Pipes

Cupro Nickel 70/30 Seamless Pipes

Mill indent
UNS C71500EN CW354H / CuNi30Mn1Fe

The higher-duty cupro nickel. Tripling the nickel to 30% raises strength, erosion-corrosion resistance and the allowable seawater velocity to around 4.5 m/s, and lifts the service temperature well above 90/10. It is the grade for pump and valve-adjacent piping, hot brine and MSF desalination heat recovery, and any line where turbulence or sand loading would strip the film off 90/10.

7 شكل متوفر
تحميل البيانات الفنيةEN