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C43400 Wrought BRASSES Copper-Zinc-Tin Alloys (Tin Brasses) true true https://api.copper.org/alloys.xhtml/C43400
Chemical Composition
Elements
Cu(1) Pb Sn Zn Fe
(1) Cu + Sum of Named Elements 99.7% min.
Min (%) 84.0 0.40
Max (%) 87.0 0.05 1.0 Rem 0.05
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Rockwell B scale Rockwell F scale Rockwell 30T scale Shear Strength
(ksi)		 Torsion Modulus
(ksi)		 Ultimate Tensile Strength in Shear
(ksi)		 Section Size
(in)
* Measured at room temperature, 68°F (20°C).
Flat Products 1/2 Hard H02 59 Typ
 51 Typ
 18 Typ
 66 Typ
 63 Typ
 42 Typ
 0.04
1/4 Hard H01 52 Typ
 41 Typ
 28 Typ
 54 Typ
 55 Typ
 40 Typ
 0.04
3/4 Hard H03 68 Typ
 59 Typ
 10 Typ
 73 Typ
 68 Typ
 45 Typ
 0.04
Extra Hard H06 84 Typ
 71 Typ
 5 Typ
 83 Typ
 74 Typ
 52 Typ
 0.04
Extra Spring H10 88 Min
 75 Typ
 3 Typ
 84 Min
 74 Min
 56 Typ
 0.04
Hard H04 74 Typ
 67 Typ
 7 Typ
 80 Typ
 71 Typ
 49 Typ
 0.04
Nominal Grain Size 0.015 mm OS015 48 Typ
 17 Typ
 47 Typ
 70 Typ
 30 Typ
 37 Typ
 0.04
Nominal Grain Size 0.025 mm OS025 46 Typ
 16 Typ
 48 Typ
 65 Typ
 26 Typ
 37 Typ
 0.04
Nominal Grain Size 0.035 mm OS035 45 Typ
 15 Typ
 49 Typ
 64 Typ
 22 Typ
 36 Typ
 0.04
Spring H08 90 Typ
 74 Typ
 4 Typ
 86 Typ
 76 Typ
 5.8 Typ 54 Typ
 0.04
Physical Properties
(1)For annealed alloys.
Melting Point - Liquidus°F 1870
Melting Point - Solidus°F 1810
Densitylb/cu in. at 68°F 0.316
Specific Gravity 8.75
Electrical Conductivity% IACS at 68°F 31
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 79
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 10.5
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 18000 (1)
Modulus of Rigidityksi 6000
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Good
Spot Weld Good
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Fair
Machinability Rating 30
Common Fabrication Processes
  • Blanking
  • Bonding
  • Drawing
  • Shearing
  • Stamping
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 800 1250
Hot Working Temperature 1500 1600
Typical uses
Product Category Product Reason Category Reason
Electrical Blades Conductivity (Electrical) Electrical Conductivity
Blades Conductivity (Thermal) Thermal Conductivity
Blades Corrosion Resistance Corrosion Resistance
Blades Mechanical Properties Moderate Strength
Contacts Conductivity (Electrical) Electrical Conductivity
Contacts Conductivity (Thermal) Thermal Conductivity
Contacts Corrosion Resistance Corrosion Resistance
Electrical Connectors Conductivity (Electrical) Electrical Conductivity
Electrical Connectors Mechanical Properties Moderate Strength
Relay Springs Conductivity (Electrical) Electrical Conductivity
Relay Springs Conductivity (Thermal) Thermal Conductivity
Relay Springs Corrosion Resistance Corrosion Resistance
Relay Springs Mechanical Properties Ductility
Relay Springs Mechanical Properties Moderate Strength
Relay Springs Thermal Properties Resistance to Stress Relaxation
Switch Parts Conductivity (Electrical) Electrical Conductivity
Switch Parts Conductivity (Thermal) Thermal Conductivity
Switch Parts Corrosion Resistance Corrosion Resistance
Switch Parts Mechanical Properties Moderate Strength
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Bar ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
Plate ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
Sheet ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
Strip ASTM B591 COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR
Corrosion Properties

No Corrosion Properties Available.