C94700 Nickel-tin bronze +leaded nickel-tin bronze B 584

C94700 Nickel-tin bronze +leaded nickel-tin bronze B 584

(CENT, INVEST, SAND)

Copper Alloy UNS Number.C94700

Previous DesignationB 292-A

 Commercial Designation: nickel-tin bronze Grade “A”

Chemical  RequirementsComposition% Max Except as Indicated

Major Elements

Copper:85.0~90.0

Tin:4.5~6.0

Lead: 0.10

Zinc: 1.0~2.5

Iron: 0.25

Nickelincl.Cobalt: 4.5~6.0

Antimony: 0.15

Manganese:0.20

Residual Elements

Sulfur: 0.05

Phosphorus: 0.05

Aluminum: 0.005

Silicon: 0.005

Mechanical Requirements

Tensile Strength,min

ksi: 45              C94700  (HT):75

MPa: 310                        (HT):517

Yield Strength, min

ksi: 20                         (HT):50

MPa: 138                    (HT):345

Elongation in 2 in.or 50 mm, min, %: 25        C94700(HT):5

Heat Treatments

Solution treatment (not less than 1 h followed by water quench): 1425–1475°F

(775–800°C)

Annealing Treatment(not less than 2 h followed by air cool): 580–620°F

(305–325°C)

Keywords

copper alloy castings; copper-base alloy castings; sand castings

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