USA Piping Solution is a Copper Nickel 95/5 pipes and tubes supplier in the USA, stocking UNS C70400 material in seamless construction to ASTM B466 and ASTM B111. Copper Nickel 95/5 carries the same corrosion-resisting base as the more common 90/10 and 70/30 grades, at a lower nickel content that keeps material cost down for services that do not need the higher-chloride performance of those grades. We supply it as condenser and heat exchanger tube, ferrule stock, and general engineering pipe, cut to your drawing with full mill certification on every shipment. Welded heat exchanger tube is available to ASTM B543; for the wider Copper Nickel range, including 90/10 and 70/30, see our Copper Nickel Pipes & Tubes category page.
Copper Nickel 95/5 Specifications
One alloy, two standards governing seamless product, plus a separate standard for welded tube. Here is how they break down:
| Specification | Details |
|---|---|
| Standard | ASTM B466 (general engineering pipe & tube) / ASTM B111 (condenser & heat exchanger tube) |
| Welded tube standard | ASTM B543 (welded heat exchanger tube) |
| ASME equivalent | SB466 / SB111 / SB543 |
| UNS | C70400 |
| Type | Seamless as standard; welded available for heat exchanger tube only |
| Form | Tube (condenser, heat exchanger, ferrule stock) and pipe (general engineering) |
| Temper | O60 soft annealed, H55 light drawn, H80 hard drawn, HE80 hard drawn and end-annealed |
| Production route | Hot-extruded or pierced from cast billet, then cold-worked and annealed to final temper |
How 95/5 Compares
Two decisions determine whether 95/5 is the right call: how it stacks up against 90/10 and 70/30, and whether you need seamless or welded construction.
| Grade | UNS | Nickel Content | Best-Suited Service | Welded Pipe Standard |
|---|---|---|---|---|
| 95/5 | C70400 | Approx. 5% (4.8 - 6.2%) | Fresh, brackish, and moderate seawater | Not available; welded tube only, ASTM B543 |
| 90/10 | C70600 | Approx. 10% (9 - 11%) | Standard seawater duty | ASTM B467 |
| 70/30 | C71500 | ~30% | High-chloride, high-velocity seawater | ASTM B467 |
Cost tracks nickel content: 95/5 is the least expensive of the three, 70/30 the most. Choose 95/5 when the service does not demand the higher chloride resistance of the other two grades and budget matters; step up a grade when velocity or chloride severity increases. For the full range, see Copper Nickel 90/10 Pipes & Tubes and Copper Nickel 70/30 Pipes & Tubes.
Seamless vs Welded Heat Exchanger Tube
For 95/5 specifically, seamless is the default across both pipe and tube; ASTM B467, the welded pipe standard used for 90/10 and 70/30, does not cover this alloy. A welded option exists, but only as heat exchanger tube to ASTM B543.
| Property | Seamless (ASTM B466 / B111) | Welded Tube (ASTM B543) |
|---|---|---|
| Weld seam | None | Present, tested per B543 |
| Form available | Pipe and tube | Heat exchanger tube only |
| Typical use | General engineering pipe, condenser and heat exchanger tube, ferrule stock | Heat exchanger tube where a welded tube suits the design |
| Relative cost | Standard | Typically lower per foot for equivalent tube size |
Choose Seamless When
Choose seamless (ASTM B466/B111) for general engineering pipe, for tube-to-tubesheet expansion in a condenser or heat exchanger bundle, and for ferrule stock. This is the standard, most widely available form of 95/5, and the only form in which it is supplied as pipe.
Choose Welded Tube When
Choose welded tube (ASTM B543) specifically for heat exchanger applications where a welded tube suits the design, typically at a lower cost per foot than seamless tube of the same size. It is not available as general pipe; for a welded copper-nickel pipe, see our Copper Nickel 90/10 Pipes & Tubes or Copper Nickel 70/30 Pipes & Tubes pages, both supplied to ASTM B467.
Not Sure Which Grade or Construction You Need? Send Us Your Drawing
Applications
- Lithium Bromide Absorption Systems: tubing for absorption-chiller heat exchangers, this grade's defining niche use.
- Condenser Intake Systems & Salt Water Piping: moderate-severity seawater and brackish-water service.
- Ferrule Stock & Tube Repair: ferrules and sleeves for tube bundle maintenance.
For the marine, offshore, and power-generation uses shared across all copper-nickel grades, see our Copper Nickel Pipes & Tubes category page.
Testing & Availability
Every heat is tested and mill certified; see our Quality Policy page for the full testing program we run across all grades. 95/5 is stocked less widely than 90/10 or 70/30, so lead time depends on size. Send us your OD, wall thickness, and length requirement and we'll confirm current availability.
Related Products
- Copper Nickel 90/10 Pipes & Tubes
- Copper Nickel 70/30 Pipes & Tubes
- Copper Nickel Flanges
- Condenser Tubes
- Heat Exchanger Tubes & Pipes
- Copper Nickel Pipes & Tubes
Need a Custom Cu-Ni 95/5 Pipe or Tube?
Have a spec sheet or drawing ready? Send it to our team and we'll confirm construction, availability, lead time, and pricing on Cu-Ni 95/5 pipe or tube cut to your exact requirement.
Get a Quote →Frequently Asked Questions
Can Copper Nickel 95/5 be used as a lower-cost substitute for 90/10?
For fresh water, brackish water, and moderate-severity seawater, yes; 95/5 gives adequate corrosion resistance at a lower material cost. For higher-chloride or higher-velocity seawater, the extra nickel in 90/10 earns its keep and is the safer choice. See the comparison above for the full picture.
Is Copper Nickel 95/5 covered by ASTM B111 for condenser tube?
Yes. ASTM B111, the standard for seamless condenser and heat exchanger tube, explicitly includes UNS C70400 alongside 90/10 and 70/30.
What sizes and lead times are typical for 95/5, given it's less commonly stocked?
Availability depends on OD, wall thickness, and quantity, since 95/5 is stocked less widely than 90/10 or 70/30. Send us your specification and we'll confirm current mill availability and lead time.