ASTM B150 UNS C63000 Nickel Aluminium Bronze Stud Bolt & Hex Nut | UNS C63000 Stud Bolts

ASTM B150 UNS C63000 stud bolts and hex nuts are high-strength nickel aluminium bronze fasteners designed for marine, offshore, seawater and highly corrosive industrial environments.

UNS C63000 nickel aluminium bronze offers:

excellent seawater corrosion resistance
superior galling resistance
high mechanical strength
outstanding wear resistance
excellent cavitation and erosion resistance

These bronze alloy stud bolts are widely used in:

marine engineering
offshore oil & gas systems
seawater piping systems
shipbuilding
pumps and valves
desalination plants
chemical processing equipment

We are a professional manufacturer and exporter of:

ASTM B150 UNS C63000 Stud Bolts
Nickel Aluminium Bronze Stud Bolts
UNS C63000 Hex Nuts
C63000 Fully Threaded Studs
AMS 4640 Aluminium Bronze Fasteners

in China.

What is UNS C63000 Nickel Aluminium Bronze?

UNS C63000 is a high-strength nickel aluminium bronze alloy containing:

aluminum
nickel
iron
copper

This alloy is commonly known as:

Nickel Aluminium Bronze
NAB Alloy
AMS 4640

UNS C63000 provides:

high strength
excellent toughness
superior corrosion resistance
exceptional anti-galling properties

Compared with conventional stainless steel fasteners, C63000 bronze fasteners perform exceptionally well in:

seawater
brackish water
chloride environments
marine atmospheric conditions

ASTM B150 Standard

ASTM B150 / B150M is the standard specification for:

aluminum bronze rods
bars
shapes

The standard covers copper alloy grades including:

C61300
C61900
C62300
C63000
C63200
C64200

ASTM B150 materials are commonly machined into:

stud bolts
hex nuts
threaded rods
marine fasteners

ASTM B150 UNS C63000 Stud Bolt Specifications

Specification	Details
Product	Stud Bolt & Hex Nut
Material	UNS C63000
Alloy Type	Nickel Aluminium Bronze
Standard	ASTM B150 / AMS 4640
Fastener Standard	ASME B18.2.1 / B18.2.2
Thread Type	UNC / UNF / Metric
Manufacturing	Forged / Machined
Application	Marine / Offshore / Seawater

Available Product Types

UNS C63000 Stud Bolts

Available as:

fully threaded studs
double end studs
tap end studs

UNS C63000 Hex Nuts

Manufactured according to:

ASME B18.2.2
DIN standards

Aluminium Bronze Fasteners

Including:

bolts
nuts
washers
threaded rods

Main Available Aluminium Bronze Grades

We can supply:

C61900
C62300
C63000
C63280
C64200

Material selection depends on:

corrosion environment
mechanical requirements
operating temperature

Chemical Composition of UNS C63000 Stud Bolts

Composition, % Copper and Copper Base Alloys
UNS Designation	Alloy	General Name	Aluminum	Copper, min	Iron, max	Manganese, max	Nickel, max	Phosphorus	Silicon	Zinc, max^A	Lead, max	Tin	Arsenic, max
C63000	630	Aluminum Bronze	9.0 – 11.0	78.0^D	2.0 – 4.0	1.50	4.0 – 5.5	—	0.25 max	—	—	0.20 max	—

Mechanical and Physical Properties

Property	Value
Density	0.274 lb/in³
Machinability Rating	30
Corrosion Resistance	Excellent
Galling Resistance	Excellent
Wear Resistance	Excellent

UNS C63000 maintains good mechanical performance in:

seawater service
high load applications
elevated temperature environments

Advantages of UNS C63000 Stud Bolts

Excellent Seawater Corrosion Resistance

Suitable for:

marine applications
offshore platforms
seawater piping systems

Superior Galling Resistance

Ideal for:

flange bolting
valve assemblies
repeated assembly and disassembly

High Mechanical Strength

Provides:

excellent toughness
shock resistance
fatigue resistance

Excellent Cavitation and Erosion Resistance

Widely used in:

pumps
impellers
seawater handling equipment

AMS 4640 Nickel Aluminium Bronze

AMS 4640 is one of the most commonly used aerospace and marine specifications for:

UNS C63000 aluminium bronze alloy

AMS 4640 material offers:

high reliability
stable mechanical properties
corrosion resistance in aggressive environments

Corrosion Resistance of C63000 Stud Bolts

UNS C63000 provides excellent resistance to:

seawater corrosion
brackish water
chloride attack
cavitation erosion
marine atmosphere

It also resists:

dilute sulfuric acid
hydrochloric acid
non-oxidizing acids

making it suitable for:

offshore oil & gas systems
desalination plants
marine equipment

Galling Resistance

One major advantage of C63000 bronze fasteners is:

excellent anti-galling performance

Compared with stainless steel fasteners, nickel aluminium bronze:

reduces thread seizure
improves installation reliability
minimizes thread damage

This makes C63000 ideal for:

flange bolting systems
offshore maintenance
seawater service

Manufacturing Standards

Available manufacturing standards include:

ASME
DIN
IFI
BS
ISO

Custom fasteners can also be manufactured according to:

drawings
offshore project specifications

Available Sizes

Imperial Sizes

1/2″ – 2″

Metric Sizes

M10 – M52

Length

customized according to project requirements

Thread Standards

Available thread standards:

UNC
UNF
Metric Thread
BSP
custom thread types

Heat and Wear Resistance

UNS C63000 retains excellent properties under:

elevated temperature
heavy mechanical load
abrasive conditions

This makes it suitable for:

high load bolting systems
marine propulsion equipment
heavy-duty industrial equipment

Inspection and Testing

UNS C63000 stud bolts may undergo:

chemical composition analysis
mechanical testing
dimensional inspection
thread inspection
hardness testing
PMI testing

Third-party inspection available from:

Products can be supplied with:

EN 10204 3.1 certificates
full material traceability

Applications of UNS C63000 Stud Bolts

Marine Engineering

Used in:

shipbuilding
seawater systems
marine propulsion equipment

Offshore Oil & Gas

Applied in:

offshore platforms
subsea systems
seawater piping

Pumps and Valves

Suitable for:

seawater pumps
valve assemblies
impellers

Chemical Processing

Used in:

corrosive process systems
acid handling equipment

Desalination Plants

Ideal for:

seawater treatment systems
brine handling equipment

UNS C63000 vs Stainless Steel Fasteners

Property	UNS C63000	Stainless Steel
Seawater Resistance	Excellent	Good
Galling Resistance	Excellent	Moderate
Cavitation Resistance	Excellent	Limited
Marine Use	Preferred	Common

UNS C63000 is often preferred in:

aggressive marine environments
seawater applications
anti-galling bolting systems

Example Ordering Information

Product: Stud Bolt Fully Threaded + 2 Hex Nuts
Size: 5/8″ × 90 mm
Material: ASTM B150 UNS C63000
Standard: ASME B18.2.1 / ASME B18.2.2
Thread Type: UNC
Quantity: As required

Frequently Asked Questions

What is UNS C63000?

UNS C63000 is a nickel aluminium bronze alloy with excellent seawater corrosion resistance and high strength.

What are C63000 stud bolts used for?

They are commonly used in:

marine systems
offshore oil & gas
seawater applications
anti-galling bolting systems

Is UNS C63000 suitable for seawater?

Yes. C63000 provides excellent resistance to seawater corrosion and cavitation.

What is AMS 4640?

AMS 4640 is a specification covering nickel aluminium bronze alloy UNS C63000.

Does C63000 have anti-galling properties?

Yes. Nickel aluminium bronze offers excellent galling resistance compared with stainless steel fasteners.

ASTM B150 UNS C63000 Nickel Aluminium Bronze Stud Bolt & Hex Nut,UNS C63000 Stud bolt

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