CW711R

CW711R, categorized as naval brass, is predominantly employed in machine hardware, screw machine products, and valve stems. This specific variant, known as CW711R naval brass, holds significant suitability for hot forging, pressing, and machining procedures. Bolstered by heightened ductility, naval brass displays outstanding electrical and thermal conductivity. Additionally, CW711R naval brass exhibits commendable resistance to creep and remarkably high impact strength.

Distinguishing itself from CW712R naval brass, CW711R is characterized by a lower copper and tin content while featuring a relatively higher Lead percentage. Despite this variation in chemical composition, CW711R shares almost identical properties with CW712R, making it adept at withstanding corrosion and well-suited for hot forming applications.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu59.5061.50
Pb1.302.20
Fe0.10
Sn0.501.00
Ni0.30
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN 12164 (AS PER TEMPER R410)
Range (mm) From To UTS Min (N/mm²) PS Min (N/mm²) Elongation Min (%) Hardness Min Hardness Max
Round (Dia)25041018
Hex (A/F)35041018
Square (A/F)35041018
Rectangle (Thickness)35041018
PHYSICAL PROPERTIES
Melting Points – Liquidus 0F1650
Melting Points – Solidus 0F1630
Density lb/cu in. at 68 0F0.305
Specific Gravity 8.44
Electrical Conductivity % IACS at 68 0F 26
Thermal conductivity Btu/ Sq ft / ft hr / 0F at 680F 67
Coefficient of Thermal Expansion 68-57210 -6 Per 0F (68-5720F) 11.8
Specific Heat capacity Btu/ lb /0F at 680F 0.09
Modulus of Elasticity in Tension ksi 15000
Modulus of Rigidity ksi 5600
FABRICATION PROPERTIES
TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingNot Recommended
Spot WeldNot Recommended
Seam WeldNot Recommended
Butt WeldFair
Capacity for Being Cold WorkedPoor
Capacity for Being Hot FormedGood
Forgeability Rating90
Machinability Rating70

CW711R

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