EN 12451 CuNi 30 Fe 1 Mn Condenser Tubes are seamless copper-nickel alloy tubes suitable for heat exchangers and condenser systems where seawater and other challenging cooling media are used. CW354H (also known as CuNi30Mn1Fe) is a copper-nickel alloy that has 30-32% Ni and other elements to provide excellent resistance to seawater corrosion, erosion-corrosion, and marine fouling. These tubes can be used for power plant condenser, desalination equipment, marine cooling system and industrial heat exchanger. They are supplied annealed (R370) or half hard (R480), and every tube is eddy current tested. Amardeep Steel offers EN 12451 CuNi 30 Fe 1 Mn Condenser Tubes for industrial and marine applications in response to customer needs of selecting the right material.
Applications and Industrial Uses of CuNi 30 Fe 1 Mn Condenser Tube
- Power Plant Surface Condensers
- Seawater-Cooled Heat Exchangers
- Thermal Desalination Plants
- Shipboard Cooling Systems
- Offshore Oil and Gas Cooling Equipment
- Marine Steam Condensers
- Coastal Industrial Cooling Systems
- Naval Machinery Cooling Circuits
Technical Data
Specifications of EN 12451 CuNi 30 Fe 1 Mn Condenser Tube
| Parameter | Details |
|---|---|
|
Standard |
EN 12451 (Seamless round copper and copper alloy tubes for heat exchangers) |
|
Material Designation |
CuNi30Mn1Fe |
|
Material Number |
CW354H (70/30 Copper Nickel) |
|
Manufacturing Type |
Seamless, cold drawn, stress relieved or annealed |
|
Outside Diameter (OD) |
Typically 10 mm to 38.1 mm for condenser tube; custom sizes available to order |
|
Wall Thickness |
Typically 0.7 mm to 2.0 mm |
|
Temper Conditions |
R370 / H090 (Annealed); R480 / H120 (Half Hard) |
|
Delivery Forms |
Straight lengths, U-bends, low fin tubes |
|
Length |
Up to maximum mill capability; cut-to-length and exact tolerances on request |
|
Quality Testing |
100% Eddy Current test to EN 1971-1 / EN 1971-2, Tensile, Hardness, Stress Corrosion |
|
Certification |
EN 10204 3.1, EN 10204 3.2 with Third-Party Inspection (TUV, DNV, BV, LRS) |
Chemical Compositions of EN 12451 CuNi 30 Fe 1 Mn Condenser Tube
| Element | Element Symbol | Composition Limits (%) |
|---|---|---|
|
Copper |
Cu |
Balance |
|
Nickel |
Ni |
30.0 to 32.0 (Cobalt up to 0.1% max counted as Nickel) |
|
Iron |
Fe |
0.4 to 1.0 |
|
Manganese |
Mn |
0.5 to 1.5 |
|
Carbon |
C |
0.05 max |
|
Phosphorus |
P |
0.02 max |
|
Lead |
Pb |
0.02 max |
|
Sulphur |
S |
0.05 max |
|
Tin |
Sn |
0.05 max |
|
Zinc |
Zn |
0.5 max |
|
Total Residual Elements |
Other |
0.2 max |
EN 12451 CuNi 30 Fe 1 Mn Condenser Tube Mechanical Properties
| Temper | Condition | Tensile Strength Rm min (MPa) | Proof Strength Rp0.2 min (MPa) | Elongation A min (%) | Hardness (HV) |
|---|---|---|---|---|---|
|
R370 |
Annealed |
370 |
120 |
35 |
Not specified |
|
H090 |
Annealed |
Not specified |
Not specified |
Not specified |
90 to 120 |
|
R480 |
Half Hard |
480 |
300 |
12 |
Not specified |
|
H120 |
Half Hard |
Not specified |
Not specified |
Not specified |
120 min |
Physical Properties of EN 12451 CuNi 30 Fe 1 Mn Condenser Tube
| Property (at 20°C / 68°F) | Metric Value |
|---|---|
|
Density |
8.9 g/cm³ |
|
Melting Range |
1170°C to 1240°C |
|
Thermal Conductivity |
~30 W/m·K |
|
Mean Thermal Expansion Coefficient (20°C to 300°C) |
~16.5 µm/m·°C |
|
Modulus of Elasticity (Young's Modulus) |
~130 GPa |
|
Electrical Conductivity |
~5% IACS |
|
Magnetic Permeability |
Essentially non-magnetic |
Equivalent Grades of EN 12451 CuNi 30 Fe 1 Mn Condenser Tube
| Standard System | Standard Number / Designation | Material Grade |
|---|---|---|
|
EN Standard |
EN 12451 |
CuNi30Mn1Fe |
|
EN Material Number |
EN 12451 |
CW354H |
|
Former DIN (Germany) |
DIN 1785 / DIN 17664 |
2.0882 (CuNi30Mn1Fe) |
|
UNS (USA ASTM B111) |
ASTM B111 |
UNS C71500 |
|
Former BS (UK) |
BS 2871 Part 3 |
CN107 |
|
JIS (Japan) |
JIS H3300 |
C7150 |
|
Common Trade Names |
Not applicable |
70/30 Copper Nickel, Cupronickel 70/30 |
EN 12451 CuNi 30 Fe 1 Mn Condenser Tube Size and Weight Chart
| OD (mm) | 0.70 mm Wall | 0.90 mm Wall | 1.00 mm Wall | 1.25 mm Wall | 1.50 mm Wall | 2.00 mm Wall |
|---|---|---|---|---|---|---|
|
12.70 |
0.235 kg/m |
0.297 kg/m |
0.327 kg/m |
0.400 kg/m |
0.470 kg/m |
0.598 kg/m |
|
15.88 |
0.297 kg/m |
0.377 kg/m |
0.416 kg/m |
0.511 kg/m |
0.603 kg/m |
0.776 kg/m |
|
16.00 |
0.299 kg/m |
0.380 kg/m |
0.419 kg/m |
0.516 kg/m |
0.608 kg/m |
0.783 kg/m |
|
19.05 |
0.359 kg/m |
0.457 kg/m |
0.505 kg/m |
0.622 kg/m |
0.736 kg/m |
0.953 kg/m |
|
20.00 |
0.378 kg/m |
0.481 kg/m |
0.531 kg/m |
0.655 kg/m |
0.776 kg/m |
1.007 kg/m |
|
22.00 |
0.417 kg/m |
0.531 kg/m |
0.587 kg/m |
0.725 kg/m |
0.860 kg/m |
1.118 kg/m |
|
25.00 |
0.476 kg/m |
0.606 kg/m |
0.671 kg/m |
0.830 kg/m |
0.986 kg/m |
1.286 kg/m |
|
25.40 |
0.483 kg/m |
0.617 kg/m |
0.682 kg/m |
0.844 kg/m |
1.002 kg/m |
1.309 kg/m |
|
28.58 |
0.546 kg/m |
0.697 kg/m |
0.771 kg/m |
0.955 kg/m |
1.136 kg/m |
1.486 kg/m |
|
30.00 |
0.573 kg/m |
0.732 kg/m |
0.811 kg/m |
1.005 kg/m |
1.195 kg/m |
1.566 kg/m |
|
31.75 |
0.608 kg/m |
0.776 kg/m |
0.860 kg/m |
1.066 kg/m |
1.269 kg/m |
1.664 kg/m |
|
38.10 |
0.732 kg/m |
0.936 kg/m |
1.037 kg/m |
1.288 kg/m |
1.535 kg/m |
2.019 kg/m |
Frequently Asked Questions
What is EN 12451 CuNi30Mn1Fe?
EN 12451 CuNi30Mn1Fe is the 70/30 copper nickel grade (material number CW354H) specified under European standard EN 12451 for seamless round tubes used in heat exchangers and surface condensers. It contains 30.0% to 32.0% nickel, 0.4% to 1.0% iron, and 0.5% to 1.5% manganese.
Is CuNi 30 Fe 1 Mn the same as CuNi30Mn1Fe?
Yes. Both designations represent the exact same 70/30 copper nickel alloy formulation. "CuNi 30 Fe 1 Mn" reflects common commercial purchasing terminology, whereas "CuNi30Mn1Fe" (CW354H) is the official standardized designation in EN 12451.
What tempers are available in EN 12451 CW354H tube?
EN 12451 CW354H tubing is primarily supplied in two temper conditions: R370 / H090 (Fully Soft Annealed, minimum tensile strength 370 MPa) and R480 / H120 (Half Hard, minimum tensile strength 480 MPa).
What is the difference between CW354H and CW353H?
CW354H (CuNi30Mn1Fe) is the standard 70/30 condenser tube grade with 0.4% to 1.0% Fe and 0.5% to 1.5% Mn. CW353H (CuNi30Fe2Mn2) contains higher concentrations of iron (~2%) and manganese (~2%), providing increased resistance to high-velocity liquid erosion.
Is every EN 12451 tube eddy current tested?
Yes. Compliance with EN 12451 mandates 100% non-destructive eddy current testing across every individual tube length in accordance with EN 1971 standards to ensure zero defect rates.
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