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.
NBM's modified C90300 is compliant with NSF/ANSI 61, NSF 61 Annex G, and NSF/ANSI 372.2.
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
Pipe
Tube
Sheet/Plate
| SOLID 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. |
| 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) |
Typical Uses for C90300 Tin Bronze
- Lead free applications
- Plumbing fixtures
- Potable water applications
- Bearings & bushings
- Seal rings
- Gears
- Piston rings
- Pump impellers
- Steam fittings
- Valve components
- Marine fittings
- Pump components
Product Specifications
| 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 |
Chemical Composition
| 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 |
Temper
| 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 |
Mechanical Properties
| 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 |
Physical Properties
| 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 |
Fabrication
| Joining Technique | Suitability |
| Brazing | Good |
| Coated Metal Arc Welding | Fair |
| Gas Shielded Arc Welding | Fair |
| Machinability Rating | 30 |
| Oxyacetylene Welding | Fair |
| Soldering | Excellent |
Our Services
Aviva Metals Houston warehouse operation is a AS9120B, and AS9100D in our Ohio foundry, based on ISO 9001:2015. We are now also offering our complete range of brass, bronze and copper alloys in precision machined or milled parts, in full accordance with your drawings. Aviva Metals creates custom precision bearings and bushings, flanges, washers, double flange bearings, full half bearings, spacers and special machined parts that can be shipped on a global basis and in full accordance with most international standards.
