About Us

METALCO supplies copper, brass, and bronze semi-finished products for OEMs and distributors worldwide — with documented quality, export packing, and technical support you can rely on.

+91 93281 05180
bdm@metalalloyscorp.com
Plot 6-7, Khodiyar Colony, Jamnagar Gujarat India

C314 Commercial Bronze

Bronze Rods / C314 Commercial Bronze

C314 Commercial Bronze is a high-quality copper-zinc alloy valued for its excellent formability, corrosion resistance, and attractive finish. It offers good strength, reliable machinability, and durability, making it ideal for electrical components, architectural hardware, decorative fittings, fasteners, and a wide range of industrial and engineering applications.

Download PDF Request a Quote (RFQ)

Urgent Quote? WhatsApp Now

Description
Chemical Composition
Physical Properties
Sizes Available

Bronze Family: Leaded Commercial Bronze
C 314 Commercial Bronze is a METALCO standard alloy and finds use in hardware applications, electrical applications, as well as fasteners and industrial applications. Uses include various electrical connectors, screws and nuts, pickling crates, fixtures and racks. It is also common in screw machine applications.

Technical specifications:

Specification :
Leaded Commercial Bronze	ASTM B 140 C31400

Equivalent Specifications*

ASTM B140
B140M (Copper Alloy UNS No. 31400)

Reference Specifications*
Mil-V-18436

* Equivalent specifications are verified and updated annually.
Specifications shown are current as of May 4, 2010.

Chemical Composition (%)
Cu	Pb	Fe	Ni	Zn
87.5 – 90.5	1.3 – 2.5	0.10 max.	0.7 max.	Remainder
Sum of all named elements = 99.6%

Mechanical Properties Minimum Tensile Properties, English/Metric
Temper HO2 half hard
Nominal Diameter	Tensile Strength		Yield Strength*		Elongation**
Inches/mm	ksi	MPa	ksi	MPa	%
½" and under/ 12 mm	50	345	30	205	7
Over ½ to 1"/12-25 mm incl	45	310	27	185	10
Over 1.00"/25 mm	40	275	25	170	12
Temper HO4 hard
Nominal Diameter	Tensile Strength		Yield Strength*		Elongation**
Inches/mm	ksi	MPa	ksi	MPa	%
2" and under/50 mm	53	365	40	275	6

Machinability Rating 80 (Free Cutting Brass = 100)

Physical Properties
	English	Metric
Melting Point – Liquidus	1900° F	1038° C
Melting Point – Solidus	1850° F	1010° C
Density	0.319 lb/in3 at 68° F	8.83 gm/cm3 @ 20° C
Specific Gravity	8.830	8.83
Electrical Resistivity (Annealed)	24.70 ohms-cmil/ft @ 68° F	4.11 microhm-cm @ 20° C
Electrical Conductivity (Annealed)	42%IACS @ 68° F	0.246 MegaSiemens/cm @ 20° C
Thermal Conductivity	104 Btu · ft/(hr · ft2·°F) @ 68° F	180.0 W/m·°K @20° C
Coefficient of Thermal Expansion	10.2 · 10-6 per °F (68-572° F)	18.4 ·10-6 per °C (20-300° C)
Specific Heat Capacity	0.090 Btu/lb/°F @ 68° F	377.1 J/kg · °K @293° K
Modulus of Elasticity in Tension	17,000 ksi	117,000 MPa

Fabrication Practices
Soldering	Excellent	Capacity for Being Cold Worked	Good
Brazing	Good	Capacity for Being Hot Formed	Poor
Oxyacetylene Welding	Not Recommended
Gas Shielded Arc Welding	Not Recommended	Annealing Temperature – Minimum	800° F or 427° C
Coated Metal Arc Welding	Not Recommended	Annealing Temperature – Maximum	1200° F or 649° C
Resistance Welding – Spot	Not Recommended
Resistance Welding – Seam	Not Recommended
Resistance Welding – Butt	Fair