C61400 Aluminum Bronze is copper, alloyed with zinc, iron and aluminum.  C614 offers levels of corrosion and high velocity seawater erosion resistance similar to C71500 70/30 Copper Nickel but with higher strength and resistance to fatigue.
Aluminum Bronze 61400 is primarily available in wrought plate form and is used most often in sea water service, steam condensers, oil coolers and other heat exchangers operating on sea water.  Tubesheets made from C614 Aluminum Bronze are often paired with copper-nickel tubes in sea water cooled condensers and heat exchangers.

Marmetal stocks C614 Aluminum Bronze in Plate form.

C614 Aluminum Bronze

ASTM ASTM ASME ASME Military
Plate ASTM 169 ASTM B171 ASME SB-169 ASME SB-171 QQ-C-450

Mechanical Properties for C614 Aluminum Bronze

PLATE
Commercial
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
M20 / O25 up to 1/2″ 72 32 35
over 1/2″ to 2″ 70 30 35
over 2″ to 5″ 65 28 35
      QQ-C-450
TEMPER SIZE TENSILE, KSI, MIN YIELD@0.5%, KSI, MIN Elong. % Min
Soft up to 1/2″ 72 32 35
Soft over 1/2″ to 2″ 70 30 35
Soft over 2″ to 5″ 65 28 35
Hard up to 1/2″ 80 45 25
Hard over 1/2″ to 1″ 70 40 30

Compositions for C614 Aluminum Bronze

COMMERCIAL
UNS No. Copper + Silver Manganese Lead Iron Zinc Aluminum Phosphorus
C61400 Remainder 1.0 max 0.01 max 1.5-3.5 0.20 max 6.0-8.0 0.015 max
QQ-C-450
UNS No. Copper + Named Elements Manganese Lead Iron Zinc Aluminum Phosphorus
C61400 99.5 1.0 max 0.01 max 1.5-3.5 0.20 max 6.0-8.0 0.015 max

Physical Properties for C614 Aluminum Bronze

Density @ 68o F 0.285 lb/in3
Melting Range 2084-2192o F
Hot Formability Good
Cold Formability Fair
Machinability rating (C360 = 100) 30
Brazing Fair
Soldering Not Recommended
Gas-shielded arc welding Fair
Oxy-acetylene welding Not recommended
Carbon-arc welding Fair
Coated metal-arc welding Fair
Resistant welding: spot and seam Good
Resistance Welding: butt Good

Applications for C614 Aluminum Bronze

* Chutes
* Tubesheets
* Condenser Head Plates
* Vessel Bodies
* Tanks
* Marine Hardware
* Blending Chambers
* Mixing Troughs
* Wear Plates
* Nuts
* Machine Parts