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C66700 Manganese Brass Wrought BRONZES Other Copper-Zinc Alloys true true https://api.copper.org/alloys.xhtml/C66700
Chemical Composition
Elements
Cu(1,2) Pb Zn Fe Mn
(1) Cu + Sum of Named Elements 99.5% min.
(2) Cu value includes Ag.
Min (%) 68.5 0.8
Max (%) 71.5 0.07 Rem 0.10 1.5
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Rockwell B scale Rockwell F scale Rockwell 30T scale Shear Strength
(ksi)		 Section Size
(in)
* Measured at room temperature, 68°F (20°C).
Flat Products 1/2 Hard H02 64 Typ
 57 Typ
 48 Typ
 20 Typ
 70 Typ
 64 Typ
 0.04
1/4 Hard H01 56 Typ
 36 Typ
 36 Typ
 38 Typ
 57 Typ
 55 Typ
 0.04
3/4 Hard H03 71 Typ
 66 Typ
 13 Typ
 78 Typ
 69 Typ
 0.04
Extra Hard H06 88 Typ
 85 Typ
 4 Typ
 89 Typ
 75 Typ
 0.04
Extra Spring H10 100 Typ
 93 Typ
 2 Typ
 93 Typ
 78 Typ
 0.04
Hard H04 78 Typ
 74 Typ
 62 Typ
 10 Typ
 84 Typ
 72 Typ
 0.04
Nominal Grain Size 0.015 mm OS015 55 Typ
 24 Typ
 24 Typ
 44 Typ
 83 Typ
 47 Typ
 0.04
Nominal Grain Size 0.025 mm OS025 53 Typ
 20 Typ
 20 Typ
 53 Typ
 77 Typ
 41 Typ
 0.04
Nominal Grain Size 0.035 mm OS035 50 Typ
 17 Typ
 18 Typ
 55 Typ
 74 Typ
 35 Typ
 0.04
Nominal Grain Size 0.050 mm OS050 49 Typ
 15 Typ
 58 Typ
 70 Typ
 30 Typ
 0.04
Nominal Grain Size 0.070 mm OS070 47 Typ
 14 Typ
 16 Typ
 60 Typ
 64 Typ
 22 Typ
 0.04
Nominal Grain Size 0.100 mm OS100 46 Typ
 12 Typ
 12 Typ
 60 Typ
 18 Typ
 0.04
Spring H08 96 Typ
 90 Typ
 2.5 Typ
 91 Typ
 91 Typ
 77 Typ
 0.04
Wire 1/2 Hard H02 90 Typ
 5 Typ
 0.08
Physical Properties
Melting Point - Liquidus°F 2000
Melting Point - Solidus°F 1920
Densitylb/cu in. at 68°F 0.308
Specific Gravity 8.53
Electrical Conductivity% IACS at 68°F 17
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 56
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 11.1
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 16000
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Excellent
Seam Weld Excellent
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Fair
Machinability Rating 30
Common Fabrication Processes
  • Bending
  • Blanking
  • Forming
  • Resistance Welding
  • Seam and Butt Welding
  • Spot Welded Components
  • Stamping
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 930 1300
Hot Working Temperature 1340 1560
Typical uses
Product Category Product Reason Category Reason
Industrial Resistance Weldable Brass Products Corrosion Resistance Corrosion Resistance
Resistance Weldable Brass Products Mechanical Properties Moderate Strength
Resistance Weldable Brass Products Welding Characteristics Weldability
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.