Cast Bronze

Bronze CDA 67500

Specs: QQ-B-728, ASTM-B-138, ASTM-B-124
UNS# C67500

Manganese Bronze C67500 (Bronze CDA 67500) is strong, rigid and abrasion-resistant, has excellent hot working capacity as well as exceptional ratings for soldering and brazing. Its principal components are Copper and Zinc, with slight amounts of Lead, Tin, Iron, Aluminum, and Manganese.

This cast bronze alloy combines high strength with good corrosion resistance, making it ideal for automotive clutch discs, pump rods, balls, valve stems, and shafting.

Details

Alloy C67500 (CuZn37FeSnMn) is a wrought Manganese Bronze alloy with additions of iron, tin, and manganese to increase the strength and corrosion resistance.

The alloy can be cold worked to increase the strength and can be supplied in the half-hard and fully-hard condition.

It has excellent hot working properties and can be close die forged into valves, connectors, and other components for military applications. It can also be hot-headed or upset forged for manufacturing fasteners.

Manganese Bronze C67500 can be joined by soldering, brazing, and oxyacetylene welding and has a machinability rating of 30% compared with 100% for free machining brass.

The addition of tin aids its corrosion resistance in mild acidic waters.

Available shapes – round and hex

Tools

Decimal Conversion Table
Hardness Conversion Table
Metric Conversion Table

Silicon Iron Bronze

Aluminum Bronze C62300

Bronze CDA 65500

Applications

Industrial

Clutch Discs
Pump Rods
Shafts
Ball Valves
Valve Stems
Valve Bodies
Fasteners

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Specifications

Specifications of Bronze CDA 67500

International Standards	Material Designation	Rod, Bar & Profile	Forgings
USA ASTM	UNS C67500 Alloy A	ASTM B 138	ASTM B 124 ASTM B 283
SAE		SAE J463 SAE J461
Federal		QQ B 728

Mechanical Properties

Mechanical Properties of Bronze CDA 67500

Product Form	Condition	Size Imperial Metric	UTS Ksi N/mm²	0.5% Yield Ksi N/mm²	Elong %	Hardness RB	Shear Strength Ksi N/mm²
Rod & Bar	H02 Half Hard	<=1” (<=25mm)	72-77 500-530	36-45 50-310	13-23	83	47 325
		>1-2.5” (>25-65mm)	70-72 450-495	35-42 240-290	15-27	77	44 305
		>2.5” (>65mm)	65-70 450-485	32-35 220-240	17-30	70

Physical Properties

Physical Properties of Bronze CDA 67500

Physical Properties	Imperial Units	Metric Units
Density	0.302lb/in³	8.36g/cm³
Melting Range	1590-1630ºF	865- 890ºc
Hot Working Range	1157-1454 ºF	625-790 ºc
Mean Liner Expansion 20-300ºc		0.021 ºc x10-³
Mean Liner Expansion 68-572 ºF	0.00118 ºF x10-³
Specific Heat	0.090Btu/lb/ ºF @68ºF	377J/kg ºK @20 ºc
Thermal Conductivity	61Btu /ft²/fth ºF @68ºF	105.6W/m. ºK
Electrical Conductivity	24% IACS @68ºF	0.14m/_mm²
Electrical Resistivity	2.82µ_in	7.2 μΩcm
Modulus of Elasticity 10³
Tension	15ksi	103N/mm²
Rigidity	5.6ksi	39N/mm²

While the data is believed to be accurate, Wieland Diversified makes no representation or warranty of any kind (expressed or implied) and assumes no responsibility with respect to the accuracy and values shown above; this information should only be used as a guide.

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