C46400 Naval Brass is copper, alloyed with zinc and tin to provide improved strength, corrosion resistance and machinability.  As the name implies, naval brass has extensive marine application and can be found where strength and corrosion resistance are valued.  Typical industrial applications for 464 brass include tubesheets, baffles, valve stems, fasteners and mold plates.  C464 Naval Brass is also widely used for indoor and outdoor decorative applications.  Naval brass is considered a Lead Free product because the maximum lead content is 1/5th of 1%.

Marmetal stocks C464 Naval Brass in Sheet, Plate and Bar form.

Specifications for C464 Naval Brass

ASTM ASME Military
Bar ASTM B21 ASME SB-21 QQ-B-637
Sheet ASTM B171 ASME SB-171 QQ-B-639
Plate ASTM B171 ASME SB-171 QQ-B-639

Mechanical Properties for C464 Naval Brass

BAR – Round, Hex, Rectangular and Square
Commercial
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
M30 All Sizes 52 20 30
H02 up to 1/2″ 60 27 22
over 1/2″ to 1″ 60 27 25
over 1″ to 2″ 58 26 25
over 2″ to 3″ 54 25 25
over 3″ to 4″ 54 22 27
over 4″ 54 22 30
      QQ-B-637
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
Half-Hard up to 1/2″ 60 27 22
over 1/2″ to 1″ 60 27 25
over 1″ to 2″ 58 26 25
over 2″ to 3″ 54 25 25
over 3″ to 4″ 54 22 27
over 4″ 54 22 30
SHEET/PLATE
Commercial
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
M20 / O25 up to 3″ 50 20 35
over 3″ to 5″ 50 18 35
      QQ-B-639
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
Soft up to 3/8″ x up to 30″ wide 52 20 30
Soft up to 3/8″ x over 30″ wide 50 20 35
Soft over 3/8″ x all widths 50 20 35
Half-Hard up to 3/8″ x up to 30″ wide 60 35 20
Half-Hard up to 3/8″ x over 30″ wide 57 28 30
Half-Hard over 3/8″ x all widths 54 25 30

Compositions for C464 Naval Brass

COMMERCIAL
UNS No. Copper + Silver Tin Lead Iron Zinc
C46400 59.0-62.0 0.50-1.0 0.20 max 0.10 max remainder
QQ-B-637
UNS No. Copper + Silver Tin Lead Iron Other elements total Zinc
C46400 59.0-62.0 0.50-1.0 0.20 max 0.10 max 0.10 max remainder
QQ-B-639
UNS No. Copper + Silver Tin Lead Iron Other elements total Zinc
C46400 59.0-62.0 0.50-1.0 .20 max 0.10 max 0.10 max remainder

Physical Properties for C464 Naval Brass

Density @ 68o F 0.304 lb/in3
Melting Range 1630-1650o F
Hot Formability Excellent
Cold Formability Fair
Machinability rating (C360 = 100) 30
Brazing Excellent
Soldering Excellent
Gas-shielded arc welding Fair
Oxy-acetylene welding Good
Carbon-arc welding Not recommended
Coated metal-arc welding Not recommended
Resistant welding: spot and seam Good
Resistance Welding: butt Good

Applications for C464 Naval Brass

* Tubesheets
* Baffles
* Valve Stems
* Pump Bodies
* Impellers
* Heat Exchangers
* Fasteners
* Mold Plates
* Wear Plates
* Decorative Fascia
* Antimicrobial Surfaces