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C90300 Tin Bronze Lead-Free Modified Navy G
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C90300 Tin Bronze Lead-Free Modified Navy G

ASTM B505, SAE J462, SAE J461

NBM C90300 Lead Free Tin Bronze, also known as modified Navy G, is a high wear resistant that provides good mechanical properties and excellent corrosion resistance to dezincification. This proven alloy is used in wide applications and has a excellent rating for soldering and offers good brazing. Aviva Metals maintains a stock of hollow and solid bar of CDA 903 Tin Bronze.

Common applications include lead free applications, plumbing fixtures, potable water applications, bearings & bushings, seal rings, gears, piston rings, pump impellers, steam fittings, valve components, marine fittings and pump components and many more.åÊ

NBM's modified C90300 is compliant with NSF/ANSI 61, NSF 61 Annex G, and NSF/ANSI 372.2.åÊ

Compliance: This alloy meets the NSF Portable Water (PW) requirements as well as the requirements of the following NATIONAL CODES:

  • National Plumbing Code of CANADA
  • Uniform Plumbing Code
  • International Plumbing Code
  • International Residential Code
  • National Standard Plumbing Code
  • SBCCI Standard Plumbing Code

Sizes Available from NBM:

åÊSolid Bar 3/8" - 16" Diameter
Hollow Bar (Continuous Cast) 1/2" I.D. x 1" O.D. thru 14" I.D. x 16" O.D.åÊ
Hollow Bar (Centrifugal) up to 30" O.D. (stock) / 100" O.D. plus, special order
Square Bar up to 10" square
Hex Bar 5/8" AF - 4" AF
Wear Plate 1/4" - 10" thick thru 16" widths (up to 22" upon request)


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Chemical Composition
Temper
Mechanical Properties
Physical Properties
Fabrication
Specifications
Al Sb Cu Fe Pb Ni P Si S Sn Zn
Min/Max 0.005 0.2 86.0 - 89.0 0.2 0.25 1 0.05 0.005 0.05 7.5 - 9.0 3.0 - 5.0
Nominals - - 87.5000 - - - - - - 8.3000 4.0000
Product Type Temper Type
Centrifugal ASTM B271, SAE J462, J461
Continuous ASTM B505, SAE J461, J462
Ingot ASTM B30
Precision MILITARY MIL-C-11866
Sand ASTM B763, B584, SAE J462, J461
Temper Sect. Size Cold Work Type Min Temp Tensile Strength YS
0.05% UL 		YS
0.02% Offset 		YS
0.005% Offset 		Elong. RH
B 		RH
C 		RH
F 		RH
30T 		VH
500 		BH
500 		BH
3000 		Shear
Strgth 		Fatigue
Strgth 		Izod
Impact
Strgth
- in. % - F ksi ksi ksi ksi % B C F 30T 500 500 3000 ksi ksi ft-lb
- mm. - - C MPa MPa MPa MPa - - - - - - - - MPa MPa J
Product Property US Customary Metric
Coefficient of Thermal Expansion 10.0 . 10-6 per oF (68-572 F) 0.0 . 10-6 per oC (20-200 C)
Density 0.318 lb/in3 at 68 F 8.8 gm/cm3 @ 20 C
Electrical Conductivity 12.0 %IACS @ 68 F 0.069 MegaSiemens/cm @ 20 C
Electrical Resistivity 87.2 ohms-cmil/ft @ 68 F 14.49 microhm-cm @ 20 C
Magnetic Permeability 1 1
Melting Point - Liquidus 1832 F 1000 C
Melting Point - Solidus 1570 F 854 C
Modulas of Elasticity in Tension 14000 ksi 96500 MPa
Specific Gravity 8.8 8.8
Specific Heat Capacity 0.09 Btu/lb/oF at 68 F 377.1 J/kg . oK at 293 K
Thermal Conductivity 43.2 Btu . ft/(hr . ft2 . oF)at 68F 74.8 W/m . oK at 20 C
Joining Technique Suitability
Brazing Good
Coated Metal Arc Welding Fair
Gas Shielded Arc Welding Fair
Machinability Rating 30
Oxyacetylene Welding Fair
Soldering Excellent
End Product Specification
Centrifugal ASTM B271, SAE J462, J461
Continuous ASTM B505, SAE J461, J462
Ingot ASTM B30
Precision MILITARY MIL-C-11866
Sand ASTM B763, B584, SAE J462, J461

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