Heat Exchanger Tubesheet Copper Alloy Steel Tubesheet ASTM B171 C46400 PT Available

Product Overview
This heat exchanger tubesheet is manufactured from ASTM B171 C46400 (Naval Brass), a high-strength copper-zinc-tin alloy renowned for its exceptional resistance to corrosion and biofouling in seawater and brackish water environments. Designed as a critical component for shell-and-tube heat exchangers in marine, offshore, and coastal applications, it provides reliable, long-term service where other materials may fail. Each tubesheet is precision-machined and is available with Liquid Penetrant Testing (PT) to ensure the integrity of all machined surfaces prior to installation.

Material Specification & Compliance
This product is in full compliance with ASTM B171 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels, Condensers, and Heat Exchangers.

• Material Standard: ASTM B171, UNS C46400 (Naval Brass).

• Common Forms: Plate, machined to finished tubesheet dimensions.

• Non-Destructive Test (Optional): Liquid Penetrant Testing (PT) per ASTM E165 / ASME SE-165.

• Machining: Precision-faced, drilled, and grooved per client TEMA layouts.

• Certification: MTR (Mandatory), PT Report (Upon request).

Key Features & Advantages

• Superior Seawater Corrosion Resistance: C46400 Naval Brass offers outstanding resistance to dezincification, impingement attack, and stress corrosion cracking in saltwater, making it the historic material of choice for marine condensers and coolers.

• Inherent Anti-Biofouling Properties: The copper ions released from the surface inhibit the growth of marine organisms (such as barnacles and algae), reducing maintenance needs and preserving heat transfer efficiency over time.

• Verified Surface Integrity: Optional Liquid Penetrant Testing (PT) provides documented verification that critical sealing faces, tube holes, and pass partition grooves are free from surface defects, ensuring a leak-free foundation.

• Excellent Fabricability: This alloy combines good machinability with high ductility, allowing for precision drilling and grooving to meet tight TEMA tolerances.

• Full Material Traceability: Supplied with complete Mill Test Reports (MTRs) certifying compliance with ASTM B171 for chemistry and mechanical properties. Optional PT reports are provided upon request.

Typical Applications

• Marine & Shipbuilding: Main and auxiliary seawater coolers, condensers, lubricating oil coolers.

• Offshore Oil & Gas: Seawater cooling systems on platforms and FPSOs.

• Power & Desalination: Coastal power plant condensers, Multi-Stage Flash (MSF) and Multi-Effect Distillation (MED) evaporator tubesheets.

• Chemical Processing: Handling specific corrosive process streams where copper alloys are specified.

Why Choose Our C46400 Naval Brass Tubesheets?
We deliver a time-tested solution for the most challenging aqueous environments. By combining certified naval brass plate with precision machining and optional NDT verification, we provide a tubesheet that ensures long-term reliability, operational efficiency, and reduced lifecycle cost for your marine and seawater cooling systems.