Aluminum Bronze Plate for Marine & Industrial Applications — High Strength, Corrosion-Resistant Copper Alloy Solutions

Aluminum Bronze Plate is a copper based alloy containing aluminium (5% – 12%) as the primary alloying element, along with iron, nickel and manganese. Since 1997, Dongguan Jiaye Dingsheng Precision Casting & Forging Co., Ltd. has been making copper alloys for over 25 years, supplying Bronze Plates for heavy industrial applications. It has heat conductivity up to 130 W/m.K, hardness of 190 HBW and tensile strength up to 586 MPa. These plates are manufactured to ASTM B169/B148 specifications and perform in conditions when conventional metals fail.

What is Aluminum Bronze Plate and Why Does it Matter?

Aluminum Bronze Plate overcomes the usual limits of brass and tin bronze under severe corrosion, high mechanical stress and explosive danger circumstances. The surface of the alloy is covered with a self-healing aluminium oxide layer, consisting of 5%–12% aluminium. This layer provides protection against oxidation, marine organism development, and chemical attack in seawater and acidic processing environments. Unlike stainless steel, aluminium bronze is not prone to pitting and crevice corrosion in stagnant seawater and maintains its structural integrity with little galvanic corrosion. It is also non-sparking, for use in potentially hazardous gas and explosive atmospheres.

Factory - Interior

Key Grades and Chemical Composition

Different grades serve different applications. Here is a reference overview of the most common bronze plate grades:

Grade	Al (%)	Fe (%)	Ni (%)	Standard	Tensile Strength
C61400	6–8	1.5–3.5	—	ASTM B169	448–586 MPa
C95400	10–11.5	3–5	—	ASTM B148/B505	517–586 MPa
C95800	8.5–9.5	3–5	4–5	ASTM B148	620+ MPa

C61400 offers high ductility and is excellent for chemical processing hardware. C95400 is a workhorse grade combining wear resistance with moderate cost. C95800 adds nickel to prevent de-aluminification in aggressive seawater environments.

Mechanical and Physical Properties

Here are the key technical parameters for C95400 aluminum bronze plate, one of the most widely used grades:

Property	Value
Tensile Strength	517–586 MPa (75–85 ksi)
Yield Strength	207–241 MPa (30–35 ksi)
Brinell Hardness (HBW)	170–190
Thermal Conductivity	High for bronze alloys
Coefficient of Friction	Low
Magnetic	Non-magnetic
Density	~7.6 g/cm³

Aluminium bronze is a good choice for bushings and bearing pads due to its low friction coefficient. Non-magnetic feature is suitable for sensitive electrical and defence application.

Application Scenarios:

Marine Engineering Propeller shafts, sea water pump housings, rudder bearings and flanges . No more covering is required; the top layer alone prevents the growth of marine life.

Chemical Processing: Valve bodies, pump components and pipe flanges for non-oxidizing acids, brines and salt water. C61400 resists the stress corrosion cracking that attacks brass.

Oil & Gas: Non-sparking equipment and structural plates for explosive gas zones.

Heavy Machinery & Defence Bushings, Wear Plates, Sliding Parts For wear applications in the 170-190 HBW hardness range there are several carbon steels that may be considered.

Aerospace & Precision Equipment: High strength non-magnetic plates for instrument housings and support brackets

Inspection and Quality Control Criteria

For each batch of plates we have a complete inspection routine:

Spectrographic Chemical Analysis confirming the presence of aluminium and nickel

Ultrasound Testing (UT) for internal porosity and inclusions identification per ASTM E114

Dye Penetrant Inspection (PT) for Surface Detection of Micro-Cracks

Mechanical testing: ASTM B248 Brinell Hardness, Yield, and Tensile flatness and thickness tests

All shipments will be backed by Mill Test Certificate (MTC) ISO 9001, RoHS and REACH documents are available on request.

Factory - Exterior

Customization and Supply Capabilities

Custom plate thickness, width and length, sawn or precision ground to drawings
Heat treatment to adjust hardness and conductivity
CNC machined parts processed directly from plate stock
24-hour quotation service; stock items ship in 3–5 days
Sea freight, air cargo and customs procedures – logistics support

Our metallurgical experts provide alloy selection and material analysis for maritime hardware and new tooling projects.

Packaging

FAQ

Q1: Why Bronze Plate in saltwater as opposed to stainless steel?
A1: Stagnant saltwater causes pitting and crevice corrosion of stainless steels. Aluminium bronze generates a bio-static layer that reduces fouling and corrosion and increases the service life of maritime components.

Q2: Can bronze plates be welded?
A2: Yes. MIG or TIG welding with ERCuAl-A2 filler metal. Preheating and a clean surface are required to prevent weld cracking.

Q3: What is de-aluminification and how to prevent it?
A3: It is the selective leaching of aluminum from the alloy surface. Nickel addition, as used in C95800, plus proper heat treatment stops this issue under harsh conditions.

Q4: How does its hardness compare with steel?
A4: C95400 reaches 170–190 HBW, close to many carbon steels. It cannot match hardened tool steel, yet delivers better corrosion resistance and lower friction.

Q5: Is aluminum bronze magnetic?
A5: No. It stays non-magnetic, suited for minesweeping gear and electronic housings where magnetic interference needs to be controlled.

Contact Us

Need a quote or technical support for your Aluminum Bronze Plate requirements? Email us at js01@jstongcai.com.cn — response within 24 hours.