CW717R

CW717R presents as a brass alloy renowned for its elevated ductility, impressive electrical and thermal conductivity, robust impact strength, commendable resistance to creep, facilitative welding properties, and limited volatility when exposed to high vacuum environments.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu59.0062.00
Pb0.20
Sn0.51.00
Fe0.10
Ni0.20
As0.020.06
Total Others0.20
ZnRemainder
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

CW717R

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