CW717R

DESCRIPTION

CW717R is a brass with high ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.

CHEMICAL COMPOSITION

Elements Min (%) Max (%)
Cu59.0062.00
Pb-0.20
Sn0.51.00
Fe-0.10
Ni-0.20
As0.020.06
Total Others - 0.20
Zn Remainder

Mechanical Properties According To EN 1653 (As Per Temper R320)

Range (mm) From To UTS Min (MPa) PS Min (MPa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia)1.57532010030--
Hex (A/F)37032010030--
Square (A/F)36032010030--
Rectangle (Thickness)35032010030--
PHYSICAL PROPERTIES
Melting Point - Liquidus°F1650
Melting Point - Solidus°F1630
Densitylb/cu in. at 68°F0.304
Specific Gravity8.41
Electrical Conductivity% IACS at 68°F26
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F67
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)11.8
Specific Heat CapacityBtu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tensionksi15000
Modulus of Rigidityksi5600
FABRICATION PROPERTIES
TechniqueSuitability
SolderingExcellent
BrazingExcellent
Oxyacetylene WeldingGood
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingNot Recommended
Spot WeldGood
Seam WeldFair
Butt WeldGood
Capacity for Being Cold WorkedFair
Capacity for Being Hot FormedExcellent
Forgeability Rating90
Machinability Rating30

TYPICAL USES

  • Architecture
  • Fasteners
  • Industrial
  • Marine
  • Plumbing