Aluminium Bronze Forgings
Metracore Alloys stocks and supplies aluminium bronze forgings for demanding seawater and heavy-load applications. Before dispatch, every component is checked for three critical factors: strength, chemistry, and dimensional accuracy. Marine engineers consistently choose aluminium bronze, as seawater rapidly corrodes most engineering metals, leaving this copper‑based alloy family largely unaffected. These alloys combine copper with aluminium, along with controlled additions of iron, nickel, and manganese that vary by grade. We supply UNS C63000, C62300 or C64200 forgings, including nickel–aluminium bronze forgings for severe chloride environments. Components forged in these grades can handle heavy mechanical loads, resist abrasion, and provide long service in corrosive operating conditions without special surface protection.
What are Aluminium Bronze Forgings?
Aluminium bronze forgings are hot-forged components made from copper alloys that are strengthened by aluminium, with iron and nickel added. Aluminium does the defining work: it reacts with oxygen to grow a thin alumina film that rebuilds after surface damage. Iron refines the grain. Nickel guards against dealuminification in chloride-rich water. US buyers refer to it as aluminium bronze forgings.
Hot forging closes casting porosity and aligns grain flow with part shape, lifting tensile and impact strength. Forged material also slows cavitation, galling, and abrasive wear. Components keep working where cast structures fail.
Why Choose Metracore Alloys?
Metracore Alloys holds a wide range of aluminium bronze alloy grades and backs each delivery with audit-ready paperwork. Open-die and custom forging plus precision machining come through the manufacturing partner we work with for near-net and finish-machined parts alike. Third-party inspection is available on request. Mill test certificates to EN 10204 3.1, strict quality control and export-quality packaging stand behind every worldwide delivery.
- Aluminium Bronze Forgings Specification
- Types of Aluminium Bronze Forgings
- Technical Details of Aluminium Bronze Forgings
- Equivalent Grades of Aluminium Bronze Forgings
- Aluminium Bronze Forgings Chemical Composition
- Aluminium Bronze Forgings Mechanical Properties
- Manufacturing Process of Aluminium Bronze Forgings
- Aluminium Bronze Forgings Application
Aluminium Bronze Forgings Specifications
ASTM Specification
ASTM B150, ASTM B171
UNS Number
UNS C63000, C62300 or C64200
Sizes in Stock
Custom dimensions as per customer drawings
Forging Method
Open die forging, closed die forging, ring rolling, upsetting
Form
Rings, bushings, shafts, discs, sleeves, flanges, valve and pump components
Tolerance
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Testing Standard
Ultrasonic testing, chemical, mechanical, hardness, dimensional and visual checks
Certification
EN 10204 3.1 Mill Test Certificate
Types of Aluminium Bronze Forgings
Forged Rings
Forged Bushings
Forged Shafts
Forged Discs
Forged Sleeves
Forged Blocks
Forged Flanges
Forged Hubs
Open Die Forgings
Custom Closed Die Forgings
Reach out to Metracore Alloys for reliable Aluminium Bronze Forgings solutions.
Technical Details of Aluminium Bronze Forgings
Chemical Composition
| Element | Composition 1 (%) | Composition 2 (%) |
|---|---|---|
| Copper (Cu) | 78.0 min | 83.0 min |
| Aluminium (Al) | 9.0 – 11.0 | 10.0 – 11.5 |
| Iron (Fe) | 2.0 – 4.0 | 3.0 – 5.0 |
| Nickel (Ni) | 4.0 – 5.5 | 1.5 max |
| Manganese (Mn) | 1.5 max | 0.50 max |
| Silicon (Si) | 0.25 max | – |
| Zinc (Zn) | 0.30 max | – |
| Lead (Pb) | – | – |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 895 MPa min |
| Yield Strength (0.2% offset) | 585 MPa min |
| Elongation | 15% min |
| Hardness | 248 – 341 HB |
| Density | 7.94 g/cm³ |
| Creep Strength | Useful creep and stress rupture strength retained up to around 700°C |
Performance Benefits
Buyers name 8 performance benefits across marine and heavy-duty work.
- Seawater corrosion slows to a negligible rate once the alumina film establishes itself, holding tolerance for years.
- Abrasion from sand-laden flow wears the hard surface slowly, stretching overhaul intervals.
- Load-bearing capacity is high; C63000 reaches 620 MPa tensile strength in forged sections.
- Cavitation bubbles strip the film more slowly than it regenerates, keeping propeller pitting shallow.
- Fatigue strength survives cyclic pump and propulsion loading.
- The alloy doesn’t spark against steel, a decisive property in explosive atmospheres.
- Operational lifespans run to decades on permanently submerged hull fittings.
- Biofouling rarely takes hold on the copper-rich surface, so maintenance requirements stay unusually low.
Quality Assurance & Manufacturing Standards
The forge shop we buy from works to ASTM B150 for wrought material; ASTM B148, ASTM B271 and EN 1982 cover cast grades, and ASTM B171 covers tubesheet plates. Each order includes EN 10204 3.1 paperwork. Checks cover ultrasonic testing (UT), chemical analysis, mechanical and hardness testing, plus dimensional and visual examination.
Advantages of Aluminium Bronze Forgings
Six advantages stand out against alternatives.
- The strength-to-weight ratio is excellent, with 620 MPa tensile strength at 7.58 g/cm³ density.
- Seawater corrosion resistance comes without paint, cladding, or cathodic protection.
- Durability under heavy loads follows from grain flow aligned to part geometry.
- Wear resistance holds working clearances for longer.
- Service life stretches well past standard bronzes.
- Cost-effective ownership results because fewer replacements more than offset the material price.
Manufacturing Process of Aluminium Bronze Forgings
Aluminium Bronze Forgings Application
Products
Exporter, Manufacturer & Supplier of Aluminium Bronze Forgings in various grades, sizes, shapes and specifications.
FAQs
What are aluminium bronze forgings?
Aluminium bronze forgings are hot-worked components in copper-aluminium alloys such as C63000 and C95400, built for seawater duty.
What are the advantages of aluminium bronze forgings?
Four advantages lead: strength-to-weight ratio, seawater corrosion resistance, wear resistance, and low lifetime cost.
Which alloy grades are available for aluminium bronze forgings?
UNS C63000 (nickel aluminium bronze) and UNS C95400 are standard; we source other grades on request.
What standards are followed for aluminium bronze forgings?
Standards include ASTM B148, B150, B171 and B271, plus EN 1982 and EN 10204 3.1 certification.
What types of aluminium bronze forgings do you manufacture?
We manufacture forged rings, bushings, shafts, discs, sleeves, flanges, valve components and pump parts.
Which industries commonly use aluminium bronze forgings?
Marine and offshore oil and gas industries lead the demand. Mining, power generation, hydraulic engineering and defence follow.
Can you manufacture custom aluminium bronze forgings as per drawings?
Yes, our forging partners work to customer drawings, then machine, inspect and certify each piece.
Do you provide mill test certificates and third-party inspections?
An EN 10204 3.1 mill test certificate accompanies every order; third-party inspection can be added.
Are aluminium bronze forgings suitable for marine applications?
Aluminium bronze forgings excel in marine service because the alumina film resists seawater corrosion, cavitation, and biofouling.
Do you export aluminium bronze forgings worldwide?
We deliver worldwide through an established network, with every consignment packed for export.