C90300 Tin Bronze Lead Free “Navy G” Round

Name: C90300 Tin Bronze Lead Free "Navy G" Round
SKU: C90300 Tin Bronze Lead Free "Navy G" Round
Availability: InStock

$2.60 – $89.06 in

C90300 Tin Bronze Lead Free “Navy G” is a hard, strong alloy with good corrosion resistance, high wear resistance and moderate machinability.

Outer Diameter (OD)

Clear

Required Length (in)
Product Price

SKU: C90300 Tin Bronze Lead Free "Navy G" Round Categories: C90300 Tin Bronze Lead Free "Navy G", Continuous Cast Alloys, Tin Bronze Products

Product Description

C90300 Tin Bronze, Lead Free “Navy G” is a hard, strong alloy with good corrosion resistance, high wear resistance and moderate machinability. C90300 is used as gears, pump components, marine fittings, valves and for potable water applications. It can be made as continuous cast, centrifugal cast, or sand cast.

Other terms for this alloy are: Navy “G” Bronze; ASTM B 505 Alloy 90300; SAE 620; ASTM B 271 Alloy 90300; SAE J461; SAE J462; QQC 390 Alloy 903; MIL-C-11866; CDA903; Gunmetal; Tin Bronze

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.

C90300 Stock Allowances: Round Bar

Finished Outside Diameter	Inside Diameter	Outside 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. 90300 Continuous Cast)

Reference Specifications

SAE	Federal Specification	Military Specification	ASTM
SAE J461 SAE J462	QQ-C-390	MIL-C-11866	ASTM B271 (Centrifugal Casting)

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

Chemical Composition (%)**

Cu	Sn	Ni*	Pb	Zn	Sb	Fe	P	S	AI	Si
86.0 – 89.0***	7.50 – 9.0	1.00 max.	0.30 max.	3.0 – 5.0	0.20 max.	0.20 max.	1.50 max.	0.05 max.	0.005 max.	0.005 max.
Sum of all named elements = 99.4%

Physical Properties

	English	Metric
Melting Point – Liquidus	1832°F	1000°C
Melting Point – Solidus	1570°F	854°C
Density	0.318 lb/in3 at 68°F	8.80 gm/cm3 @ 20°C
Specific Gravity	8.80	8.80
Electrical Conductivity	12 %IACS @ 68°F	0.069 MegaSiemens/cm@ 20°C
Thermal Conductivity	43.20 Btu · ft/(hr · ft2 · °F) @ 68°F	74.8 W/m · °K @ 20°C
Coefficient of Thermal Expansion	10 · 10-6 per °F (68-392°F)	18.0 · 10-6 per °C (20-200 C)
Specific Heat Capacity	0.090 Btu/lb/°F @ 68°F	377.1 J/kg · °K @ 293°K
Modulus of Elasticity in Tension	14,000 ksi	96,500 MPa

Physical Properties provided by CDA

Mechanical Properties

	English	Metric
Tensile Strength, min.	44 ksi	303 MPa
Yield Strength, min.	22 ksi	152 MPa
Elongation in 2 in. or 50 mm, min.	18%	18%

* Nickel including Cobalt
** Values shown pertain to ASTM B505/505M only
*** In determining copper minimum, copper may be calculated as copper plus nickel.

Machinability Rating 30 (Free Cutting Brass = 100)

Fabrication Practices

Soldering	Excellent
Brazing	Good
Oxyacetylene Welding	Fair
Gas Shielded Arc Welding	Fair
Coated Metal Arc Welding	Fair

Fabrication Practices provided by CDA

Thermal Properties

Stress Relieving Temperatures	500° F or 260° C
Time @ Temperature	1 Hr. per inch of wall thickness
Responds to Heat Treatment	No

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C90300 Tin Bronze Lead Free “Navy G” Round