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C90700 Gear Bronze Round

C90700 (SAE 65) Tin Bronze Round

C90700 Tin Bronze (SAE 65) is a hard, strong alloy with good corrosion resistance, especially in seawater.

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SKU: C90700 (SAE 65) Tin Bronze Round Categories: ,

Product Description

C90700 Tin Bronze (SAE 65) is a hard, strong alloy with good corrosion resistance, especially in seawater. As a bearing material it resists both wear and fatigue applications. It is moderately machinable. C90700 is widely used for gears and worm wheels, bearings, marine fittings, piston rings and pump components.

Other terms for this alloy are: Gear Bronze; ASTM B 505 Alloy 90700; SAE 65; ASTM B 271 Alloy 90700; SAE J461; SAE J462; QQC 390 Alloy 90700; ASTM B427 Alloy 90700

Notice: The weights listed are the best estimates of the actual weights we will ship. They are a combination of the calculated theoretical weights and an average of actual weights. Our weights are conservative to the heavier side but there may be slight variations in weight from bar to bar.

The Physical, Fabrication and Thermal Properties shown here represent reasonable approximations suitable for general engineering use. Due to commercial variations in compositions and to manufacturing limitations, they should not be used for specification purposes.

C907 Stock Allowances: Round Bar

Finished Outside DiameterInside DiameterOutside Diameter
Up to 1.999″ inclusive-0.0190″ to -0.0640″+0.0290″ to + 0.0390″
Over 2″ to 3.999″ incl.-0.0190″ to -0.0640″+0.0340″ to + 0.0440″
Over 4″ to 5″ incl.-0.0470″ to -0.1090″+0.0550″ to + 0.0710″
Over 5″ to 9″ incl.-0.0620″ to -0.1580″+0.0780″ to + 0.1100″
Over 9″ to 12″ incl.-0.0780″ to -0.1820″+0.0940″ to + 0.1340″
Over 12″ to 16″ incl.-0.1020″ to -0.2140″+0.1180″ to + 0.1660″

NOTICE: The weights listed are the best estimates of the actual weights we will ship. They are a combination of the calculated theoretical weights and an average of actual weights. Our weights are conservative to the heavier side but there may be slight variations in weight from bar to bar.

Equivalent Specifications

ASTM B505/B505M (Copper Alloy UNS No. 90700 Continuous Cast)
ASTM B427 ( Copper Alloy UNS No. 90700 Centrifugal Cast)

Reference Specifications

SAEFederal SpecificationIngot NumberCDA
SAE 65 SAE J461 SAE J462QQ-C-390205C90700

Equivalent specifications are verified and updated annually.
Specifications shown are current as of May 4, 2010.

Chemical Composition (%)**

CuSnNi*PbZnSbFePSAlSi
88.0 – 90.0***10.0 – 12.00.50 max.0.50 max.0.50 max.0.20 max.0.15 max.1.50 max.0.05 max.0.005 max.0.005 max.
Sum of all named elements = 99.4%

Physical Properties

EnglishMetric
Melting Point – Liquidus1830° F999° C
Melting Point – Solidus1528° F831° C
Density0.317 lb/in3 at 68° F8.77 gm/cm3 @ 20° C
Specific Gravity8.7708.77
Electrical Conductivity10% IACS @ 68° F0.056 MegaSiemens/cm@ 20° C
Thermal Conductivity40.80 Btu · ft/(hr · ft2 · °F) @ 68° F70.6 W/m · °K @ 20° C
Coefficient of Thermal Expansion10.20 · 10-6 per °F (68-392° F)18.4 · 10-6 per °C
from 20-200 C
Specific Heat Capacity0.090 Btu/lb/°F @ 68°F377.1 J/kg · °K @293° K
Modulus of Elasticity
in Tension		15,000 ksi103,400 MPa

Physical Properties provided by CDA

Mechanical Properties

EnglishMetric
Tensile Strength, min.40 ksi276 MPa
Yield Strength, min.25 ksi172 MPa
Elongation in 2 in. or 50 mm, min.10%10%

** Values shown pertain to ASTM B505/505M – only Values for ASTM B427 differ slightly. Contact our QA department for clarification

* Nickel including Cobalt

*** In determining copper minimum, copper may be calculated as copper plus nickel.

Machinability Rating 20 (Free Cutting Brass = 100)

Fabrication Practices

SolderingExcellent
BrazingGood
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingFair

Fabrication Practices provided by CDA

Thermal Properties

Stress Relieving Temperatures500 F or 260 C
Time @ Temperature1 Hr. per inch
of wall thickness
Responds to Heat TreatmentNo

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