Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of c44300 admiralty brass | uns c44300 tin brass for heat exchanger tubes in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
C44300 is manufactured according to ASTM B30 / UNS C44300 standards, offering excellent corrosion resistance in seawater, high strength, and superior machinability, making it ideal for marine hardware, pump components, valves, fittings, and offshore applications.
Xi'an Dongmeng Group Co., Ltd. is a professional C44300 Admiralty Brass supplier, manufacturer, and exporter, providing high-quality C44300 brass rods, bars, tubes, forging billets, and precision-machined components for global industrial applications.
With strong production capacity, strict quality control, and export-grade packaging, Xi'an Dongmeng Group delivers custom sizes, CNC machining, forging, surface finishing, and fast worldwide shipping for distributors, wholesalers, and engineering contractors.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
WHAT IS C44300 ADMIRALTY BRASS?
C44300 is a copper-zinc-tin alloy (Admiralty Brass) with small additions of tin and arsenic to improve corrosion resistance.
Typical composition:
Copper (Cu): 70–73%
Zinc (Zn): Balance
Tin (Sn): 0.9–1.2%
Arsenic (As): 0.02–0.06% (inhibited grade)
Lead (Pb): ≤0.07%
👉 Tin improves seawater corrosion resistance
👉 Arsenic prevents dezincification
👉 Copper ensures thermal conductivity
👉 Zinc provides mechanical strength
Material: C44300 Admiralty Brass
Standards: ASTM B30 / UNS C44300 / SAE J464
Forms: Rod | Bar | Tube | Forging Stock | Machined Parts
Processing: Extrusion | Forging | CNC Machining | Cutting
Features: Marine-grade corrosion resistance, high strength, excellent machinability
Applications: Marine hardware, valves, pumps, fittings, seawater systems
Key Selling Points
✔ Direct factory supply with consistent marine-grade quality
✔ Excellent corrosion resistance in seawater and saline environments
✔ High strength & machinability, ideal for demanding applications
✔ OEM & ODM support for engineered brass components
✔ Fast delivery & export packaging suitable for global shipment
✔ Custom tolerances for specialized applications
Product Description & Features
C44300 Admiralty Brass is a high-performance marine brass alloy known for:
Exceptional resistance to seawater corrosion
High tensile strength and durability under pressure
Excellent machinability for precision components
Good forging and casting performance
Low susceptibility to dezincification in marine environments
Project Case – Power Plant Condenser System
Client Country: Middle East
Industry: Energy & Power Generation
Material Supplied:
C44300 Admiralty Brass Tubes
Specification:
Seamless heat exchanger tubes (ASTM B111 standard)
Requirement:
Long-term seawater cooling
Resistance to fouling and corrosion
High thermal efficiency
Our Solution:
Supplied inhibited C44300 tubes with strict composition control
Performed eddy current + hydrostatic testing
Provided full dimensional inspection report
Result:
Improved condenser efficiency and extended service life by 30% in seawater operation.
Export Experience
Exported to 60+ countries
Widely used in power plants and marine industries
Stable supply for EPC engineering projects
Specifications – C44300 Admiralty Brass (Metric & Imperial)
Rods / Bars
| Product Form | Metric Size (mm) | Imperial Size (inch) | Tolerance | Notes / Custom Options |
|---|---|---|---|---|
| Round Rod | Ø10–200 | Ø0.39"–7.87" | H7 / H8 / H9 | Cut-to-length, forged, or CNC machined |
| Square Bar | 10×10–150×150 | 0.39"–6" | ±0.05–0.10 mm | Custom sizes available |
| Hex Bar | 10–120 | 0.39"–4.72" | ±0.05–0.10 mm | CNC machining & threading |
Tubes
| Tube Type | OD (mm) | OD (inch) | Wall Thickness (mm) | Wall Thickness (inch) | Tolerance | Notes |
|---|---|---|---|---|---|---|
| Seamless Tube | 10–120 | 0.39"–4.72" | 1–20 | 0.04"–0.79" | H9 / Custom | Marine valves, pumps, seawater fittings |
| Welded Tube | 12–150 | 0.47"–5.91" | 1–15 | 0.04"–0.59" | ±0.05–0.10 mm | Cut-to-length available |
Forged Stock / Profiles
| Product Form | Metric Size | Imperial Size | Tolerance | Notes |
|---|---|---|---|---|
| Forged Billets | Ø20–200 | Ø0.79"–7.87" | ±0.05–0.15 mm | For marine pump bodies, valves, and custom components |
| Special Profiles | As per drawing | As per drawing | ±0.05–0.10 mm | CNC-ready, OEM custom shapes |
Chemical Composition (Typical %)
| Element | Content (%) |
|---|---|
| Copper (Cu) | 70.0–71.0 |
| Zinc (Zn) | 28.0–29.0 |
| Tin (Sn) | 0.5–1.0 |
| Lead (Pb) | ≤0.05 |
| Iron (Fe) | ≤0.05 |
| Others | ≤0.2 |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 380–450 MPa |
| Yield Strength | 150–220 MPa |
| Elongation | 20–35% |
| Hardness | 80–100 HB |
| Density | 8.5 g/cm³ |
Products Applications
Marine hardware & seawater fittings
Pumps, valves, and regulators for marine environments
Offshore construction & desalination systems
Bearings, bushings, and critical marine components
OEM machined parts requiring high corrosion resistance
Why C44300 Is Used in Marine Heat Transfer Systems
C44300 performs well due to:
1️⃣ Tin (Sn)
Improves seawater corrosion resistance
Reduces dezincification risk
2️⃣ Arsenic (As)
Stabilizes alloy surface structure
Prevents selective corrosion
3️⃣ Copper Base
Ensures excellent thermal conductivity
Supports efficient heat exchange
👉 This combination makes it ideal for condensers and seawater cooling systems
Processing Characteristics
Excellent tube drawing performance
Good cold forming ability
Suitable for condenser tube manufacturing
Good brazing and soldering properties
C44300 vs C44400 vs C70600
| Property | C44300 | C44400 | C70600 |
|---|---|---|---|
| Type | Admiralty Brass | Improved Tin Brass | Copper Nickel |
| Seawater Resistance | Good | Better | Excellent |
| Cost | Low | Medium | High |
| Thermal Conductivity | High | High | Medium |
| Application | Standard condensers | High-performance condensers | Severe marine conditions |
👉 Conclusion:
C44300 is the most cost-effective solution for standard marine and power plant heat exchangers.
Standards & Compliance
C44300 complies with:
ASTM B111 (heat exchanger tubes)
ASTM B395
ASME SB111
Copper alloy marine engineering standards
Widely used in power generation, marine, and industrial cooling systems.
Manufacturing Capability
Seamless tube production lines
Cold drawing + annealing process
Precision dimensional control
OEM heat exchanger supply
Processing & Custom Services
CNC machining: turning, milling, threading
Cutting, drilling, slotting
Forging & extrusion
Polishing & surface finishing
OEM/ODM production for custom marine components
Custom packaging & labeling
Inspection & Quality Assurance
Chemical composition verified with spectrometer
Tensile & hardness testing
Dimensional inspection & surface defect check
Pressure & leak-proof testing
Third-party inspection: SGS / TUV / BV available
EN10204 3.1 Material Test Certificate provided
Product Delivery Standards
Seaworthy export packaging: plastic film + anti-rust bag + wooden pallet/case
Laser marking, barcodes, and custom labels available
Lead time: 7–15 days (stock items ready to ship)
Supports EXW / FOB / CIF / DDP
Mixed alloy and size consolidation available
Looking for a reliable C44300 Admiralty Brass supplier with stable marine-grade quality, competitive factory pricing, and fast global delivery?
Xi'an Dongmeng Group Co., Ltd. is ready to support your projects with premium brass tubes, rods, bars, forging stock, and precision-machined components.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: What is C44300 Admiralty Brass commonly used for?
C44300 is primarily used in marine and seawater systems, including condensers, heat exchangers, desalination equipment, marine valves, pumps, and offshore fittings, thanks to its outstanding corrosion resistance.
Q2: Why is C44300 suitable for seawater environments?
Because it contains 0.5–1.0% tin, which significantly improves resistance to dezincification and stress corrosion, making it highly durable in saltwater conditions.
Q3: What product forms of C44300 do you supply?
We provide:
Round rods, square bars, hex bars
Seamless & welded tubes
Forged billets and custom profiles
CNC-machined marine components
Custom OEM/ODM is available per drawing.
Q4: Can I request custom tolerances or special dimensions?
Yes. We support:
Precision tolerances: H7 / H8 / H9 / H10
Custom diameters, wall thickness, and lengths
Special-shaped profiles and machined parts
Q5: Do you offer samples?
Yes, free standard samples are available.
Custom-machined samples can be arranged for testing and fitment validation.
Q6: What testing and inspection do you provide?
We offer:
Spectrometer chemical analysis
Tensile strength & hardness testing
Hydrostatic pressure & leak testing for tubes
Dimensional and surface inspection
Third-party inspection: SGS / TUV / BV
Material Test Certificate EN10204 3.1
Q7: What are the typical lead times?
Stock items: 3–7 days
Custom machining/forging: 10–20 days
Urgent orders can be prioritized.
Q8: Do you support mixed material orders for distributors?
Yes. We can consolidate multiple alloys, sizes, or product types in one shipment, ideal for importers and stockists.
Q9: What is the recommended packaging for export?
Plastic film + anti-rust wrapping
Strong wooden pallets or wooden cases
Custom labels, barcodes, and pallet markings
Suitable for both sea and air freight.
Q10: What payment terms do you accept?
T/T, L/C at sight, Western Union, and Alibaba Trade Assurance with full order protection.
C44300 Admiralty Brass is a tin and arsenic-modified copper alloy with excellent seawater corrosion resistance, thermal conductivity, and durability, widely used in heat exchangers, condensers, and marine cooling systems.
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