Naval Brass AMS 4611 (UNS C46400)

Technical Data Sheet

Chemical Composition Limits
Weight % Cu Fe Pb Sn Zn
AMS 4611 / 4612
59.0-62.0 0.1 0.20 0.50-1.0 Remainder

AMS 4611, AMS 4612, C46400, Naval Brass is a high strength and corrosion resistant alloy. It is widely used in marine construction where a strong, corrosive resistant, and hard material is required. The addition of tin gives the alloy an inherent resistance to dezincification, thereby further inhibiting the impingement by seawater at higher than normal temperatures

Typical Mechanical Properties



Tensile Strength ksi Yield Strength ksi Elongation 4D %
AMS 4611 1/2 Hard Bar <0.5" 60 27 22
AMS 4611 1/2 Hard Bar 0.5-1.0" 60 27 25
AMS 4611 1/2 Hard Bar 1"-2.5" 58 26 25

Physical Properties AMS 4611, AMS 4612
Melting Point - Liquidus - 1650 F
Melting Point - Solidus - 1630 F
Density - 0.304 lb/in3 at 68 F
Specific Gravity - 8.41
Electrical Resistivity - 39.9 ohms-cmil/ft @ 68 F
Electrical Conductivity - 26 %IACS @ 68 F
Thermal Conductivity - 67.0 Btu · ft/(hr · ft2·oF)at 68F
Coefficient of Thermal Expansion - 11.8 ·10-6 per oF (68-572 F)
Specific Heat Capacity - 0.09 Btu/lb/oF at 68 F
Modulus of Elasticity in Tension - 15000 ksi
Modulus of Rigidity - 5600 ksi
Machinability Rating - 30%

C 46400, AMS 4611, AMS 4612 is available in
SOLID BAR - 3/16” - 12” diameter
HEX & SQUARE BARS - up to 3”
PLATES (HOT ROLLED) - cut to size, up to 6” thick
SHEETS (COLD ROLLED) - up to 1/4” thick
DISCS - cut to size, up to 6” thick.
For all other stock availability contact Sales.


ASTM B-21, ASTM B 249, ASTM B-171
AMS 4611, AMS 4612
CZ112, CW712R

Typical Uses of Naval Brass AMS 4611, AMS 4612
Hardware -Lock Pins
Electrical - Precision Shipboard Equipment
Fasteners - Bolts, Nuts, Rivets, Landing Gear Bushings
Other Industrial - Bearings, Bushings, Pressure Vessels, Dies, Aircraft Turn, buckle Barrels, Valve Stems, Condenser Plates, Hub Cones, Welding Rod, Structural Uses, Heat Exchanger Plates, Valve, Guides, Valve Seats, Forgings
Marine - Decorative Fittings, Turn buckles, Shafting, Marine Hardware
Ordnance - Missile Components
Other - Baffle Plates

At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

Our expertise in global logistics enables us to source material from anywhere in the world in a matter of days and provide fast shipping solutions to all our customers, whichever country they are in. We use a range of transport partners to ship overnight within the UK and Europe, and offer a full range of logistics solutions from priority express services to more cost-effective economy shipments all around the globe. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.