| Característica | Alumínio Bronze | Bronze de estanho |
|---|---|---|
| Composição | ||
| Main Alloying Element | Aluminum (5-12%) | Tin (5-25%) |
| Other Common Elements | Iron, Nickel, Manganese, Silicon | Phosphorus, Lead, Zinc |
| Typical Grades | C95200 (Cu-9Al-2Fe) C95400 (Cu-11Al-4Fe) C95500 (Cu-11Al-4Ni-4Fe) | C90700 (Cu-10Sn) C93200 (Cu-7Sn-7Pb-2Zn) C52100 (Cu-8Sn-0.3P) |
| Propriedades físicas | ||
| Color | Golden to reddish-gold | Reddish to pale yellow |
| Densidade | 7.7-8.1 g/cm³ | 8.7-8.9 g/cm³ |
| Ponto de fusão | 1030-1080°C (1886-1976°F) | 830-1000°C (1526-1832°F) |
| Condutividade térmica | 30-50 W/m·K | 50-70 W/m·K |
| Condutividade elétrica | 10-18% IACS | 15-25% IACS |
| Propriedades mecânicas | ||
| Resistência à tracção | 550-1200 MPa | 220-550 MPa |
| Dureza | 140-280 Brinell | 60-180 Brinell |
| Ductilidade | 5-20% elongation | 10-30% elongation |
| Resistência ao desgaste | Excelente | Bom |
| Fatigue Strength | Mais alto | Good, but lower than aluminum bronze |
| Resistência à corrosão | ||
| Seawater Environment | Excelente | Good, but less than aluminum bronze |
| Freshwater Environment | Excelente | Excelente |
| Atmospheric Environment | Excelente | Excelente |
| Erosion-Corrosion | High resistance | Good resistance |
| Fissuração por corrosão sob tensão | High resistance | Moderate resistance |
| Propriedades de Fabricação | ||
| Castability | Bom | Excelente |
| Maquinabilidade | Good, but more challenging | Excellent, especially leaded varieties |
| Soldabilidade | Bom | Fair to poor |
| Formabilidade | Good, especially at elevated temperatures | Excellent, particularly for cold working |
| Formulários | ||
| Indústria Marinha | Propellers, pump impellers, valve stems | Bearings, bushings |
| Aeroespacial | Componentes do trem de pouso, buchas | Less common |
| Óleo e gás | Drilling components, subsea equipment | Rolamentos, engrenagens |
| Elétrico | Non-sparking tools, switchgear components | Electrical contacts, springs |
| General Engineering | Gears, bearings in harsh environments | Gears, bearings in less severe conditions |
| Economic Factors | ||
| Custo | Generally higher | Geralmente mais baixo |
| Disponibilidade | Less common | More widely available |
| Special Properties | ||
| Non-sparking | Excelente | Bom |
| Sound Damping | Moderado | Excellent (used in musical instruments) |
| High Temperature Performance | Better | Less suitable for high temperatures |
This table provides a comprehensive comparison of the key characteristics, properties, and applications of Aluminum Bronze and Tin Bronze, highlighting their strengths and differences across various aspects.