Chemical composition
Nominal: mid-range where both limits are given, the cap where only a maximum is, balance takes the remainder. Exact specified ranges below.
| Element | Name | Content % | |
|---|---|---|---|
| Main elements3 elements | |||
| Cu | Copper (incl. silver) | Bal. | |
| Ni | Nickel (incl. cobalt) | 29 – 33% | |
| Fe | Iron | 0.4 – 1% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual3 elements | |||
| Mn | Manganese | ≤ 1% | |
| Zn | Zinc | ≤ 1% | |
| Pb | Lead | ≤ 0.05% | |
Mechanical minima by form
Guaranteed values differ by form, size and delivery condition; quotations confirm the specification, form, size and condition.
| Form | Condition | Rm MPa | Rp0.2 MPa | A ≥ % | Other requirements and notes |
|---|---|---|---|---|---|
| Bar and forgings | |||||
| Round, polygonal and square bar | O60 or M30 (≤12 mm) | ≥ 360 (52 ksi) | ≥ 125 (18 ksi) | ≥ 30 | |
| Round, polygonal and square bar | H04, hard (≤12 mm) | ≥ 550 (80 ksi) | ≥ 415 (60 ksi) | ≥ 8 | |
| Plate, sheet and strip | |||||
| Pressure-vessel plate and tubesheet | M20/M10/O20/O25 (t ≤60 mm) | ≥ 345 (50 ksi) | ≥ 140 (20 ksi) | ≥ 30 | |
| Pressure-vessel plate and tubesheet | M20/M10/O20/O25 (>60–140 mm) | ≥ 310 (45 ksi) | ≥ 125 (18 ksi) | ≥ 30 | |
| Tube and pipe | |||||
| Straight seamless tube | O60, soft annealed | ≥ 360 (52 ksi) | ≥ 125 (18 ksi) | — | |
| Straight seamless tube | H80, hard drawn | ≥ 485 (70 ksi) | ≥ 310 (45 ksi) | — | |
| Straight condenser and heat-exchanger tube | Annealed at O61 | ≥ 360 (52 ksi) | ≥ 125 (18 ksi) | — | |
| Straight condenser and heat-exchanger tube | HR50, drawn and stress relieved (wall ≤1.2 mm) | ≥ 495 (72 ksi) | ≥ 345 (50 ksi) | ≥ 12 | |
| U-bend condenser and heat-exchanger tube | Annealed at O61 | ≥ 360 (52 ksi) | ≥ 125 (18 ksi) | — | |
| U-bend condenser and heat-exchanger tube | HR50, drawn and stress relieved (wall ≤1.2 mm) | ≥ 495 (72 ksi) | ≥ 345 (50 ksi) | ≥ 12 | |
| Seamless heat-exchanger tubes (EN 12451) | R370 (annealed) | ≥ 370 | ≥ 120 | ≥ 35 | Drift expansion ≥ 30 %; may also be ordered by hardness: H090, 90–120 HV. |
| Seamless heat-exchanger tubes (EN 12451) | R480 | ≥ 480 | ≥ 300 | ≥ 12 | Drift expansion ≥ 20 %; may also be ordered by hardness: H120, ≥ 120 HV. |
| Several forms | |||||
| Plate, sheet, strip and rolled rod | M20, hot-rolled | 310 – 450 | — | — | |
Where this grade is recommended
Matched in 13 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Seawater cooling | Oil & Gas | ≤ 50 °C | 1 / 6 | 94 |
| Aquaculture & harbour works | Marine & Offshore | Seawater ≤ 40 °C | 1 / 8 | 92 |
| Condensers & cooling water | Power & Nuclear | ≤ 50 °C | 1 / 5 | 92 |
| Seawater piping & HX | Marine & Offshore | ≤ 40 °C | 3 / 11 | 92 |
| High-velocity seawater | Marine & Offshore | ≤ 40 °C | 3 / 9 | 90 |
| Firewater & deluge | Marine & Offshore | ≤ 40 °C | 3 / 7 | 88 |
| Desalination & RO | Marine & Offshore | ≤ 45 °C | 11 / 12 | 86 |
| Generator H₂ cooling & seals | Power & Nuclear | ≤ 60 °C | 3 / 4 | 84 |
| Water & gas injection | Oil & Gas | ≤ 60 °C | 6 / 8 | 82 |
| Separators & heat-exchanger internals | Oil & Gas | ≤ 120 °C | 9 / 10 | 75 |
| Evaporators & tube bundles | Chemical Processing | ≤ 80 °C | 7 / 8 | 74 |
| Flowlines (chlorides) | Oil & Gas | ≤ 80 °C | 9 / 9 | 58 |
Top 12 by score shown; 1 more matched conditions — browse them by industry in the selector. Open the selector →
Designations & equivalents
| UNS | C71500 |
| W.Nr. (Germany) | 2.0882 |
| EN material number (copper) | CW354H |
| EN designation | CuNi30Mn1Fe |
| Trade name(s) | 70/30 CuNi / CuNi30Mn1Fe |
| ASTM / AISI | B111 / B122 / B151 / B171 / B395 / B466 |
| JIS (Japan) | C7150 |
| GOST (Russia) | ≈ МНЖМц30-1-1 |
Cross-references are common near-equivalents for search and shortlisting; substitution across standards requires clause-by-clause verification. All grades in one cross-reference table →
Applicable standards
11 specifications. Name the standard and its edition on the order.
Guaranteed values and required tests differ between specifications — see Mechanical minima by form for the figures per form.
Frequently asked questions
What is B30 (BFe30-1-1)?
B30 (BFe30-1-1) — Copper. 70/30 copper-nickel — high-velocity seawater systems
What is the maximum service temperature of B30?
Typically about 250 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of B30?
The specified minimum tensile strength is 360 MPa for the main product form. Minima for other forms and sizes are listed under "Mechanical minima by form" on this page.
Which standards cover B30?
ASTM B466/B466M, ASTM B111/B111M, ASTM B395/B395M, ASTM B122/B122M, ASTM B151/B151M, ASTM B171/B171M, EN 12163 (copper alloy rod), EN 12449 (seamless copper tubes), EN 12451 (seamless copper tubes for heat exchangers), EN 1652 (copper plate, sheet and strip), EN 1653 (copper plate for boilers and pressure vessels)
Where is B30 typically used?
Seawater cooling (Oil & Gas); Aquaculture & harbour works (Marine & Offshore); Condensers & cooling water (Power & Nuclear); Seawater piping & HX (Marine & Offshore)
In which forms is B30 available?
Tube, plate, strip, bar, forgings, wire and other forms — sizes and delivery condition confirmed per order, with EN 10204 3.1 / 3.2 certification.
Same series
Download PDF datasheet
This grade’s datasheet as an A4 PDF — for filing, printing or forwarding to colleagues.
Download PDF datasheetSupply & enquiry
Tube & pipeφ1 – 219 × 0.25 – 25 mm
Plate4.76 – 80 mm
Barφ8 – 300 mm
Wire & filler metalsφ0.01 – 8 mmFor this grade we can supply, against your service conditions:
- Tube, plate, strip, bar, forgings, wire and more — with size range and lead time
- Chemistry and mechanical test report (EN 10204 3.1 / 3.2)
- Like-for-like alternatives and selection advice
- Applicable standards and inspection scope
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