C64200, C642 Silicon Aluminum Bronze (AMS 4634)
C64200 Silicon Aluminum Bronze is an engineering alloy at least as resistant to corrosion as copper itself, but much stronger. CDA 642 bronze is manufactured mostly in the form of round, hexagonal, and octagonal rods for hot forming and free machining. C642 is considered to be of the best valve stem alloys. Other applications include gears, marine hardware, nuts, pole line hardware, and valve bodies and components.
- EU Designation: CuAl7Si2, CW302G
- ASTM B150, ASTM B249, QQ-C-465, AMS 4634, SAE J461, SAE J463
Typical Uses for C64200 Silicon Aluminum Bronze:
AUTOMOTIVE: Valve Guides, Automobile Engine
ELECTRICAL: Pole Line Hardware
FASTENERS: Bolts, Nuts
INDUSTRIAL: Valve Components, Valve Bodies, Gears, Valve Stems, Cams
MARINE: Hardware
Aluminum is the main alloying metal added to copper in aluminum bronze alloys such as C64200, also known as C642. A variety of aluminum bronzes of differing compositions have found industrial use, with most ranging from 5.00% to 11.00% aluminum by weight, the remaining mass being copper. Other alloying agents such as iron, nickel, manganese, and silicon are also oftentimes added. Aluminum bronzes are most valued for their high strength and corrosion resistance.
AMS 4634-C64200
Product description: Aluminum bronze
Tempers: HR50 drawn and stress relieved
Solids: 3/16″ to 6″ O.D.
Hex: 1/2″ to 2″ O.D.
Standard lengths: 144″
Kegunaan biasa
Automotive: valve guides (automobile engine)
Electrical: pole line hardware
Fasteners: bolts, nuts
Industrial: cams, gears, valve bodies, valve components, valve stems
Marine: hardware
Spesifikasi yang serupa atau setara
| CDA | ASTM | SAE | AMS | Persekutuan | tentera | Lain-lain |
|---|---|---|---|---|---|---|
| C64200 | B150 B150M | J461 J463 | 4634 | QQ-C-465 |
Komposisi kimia
| Cu% 1 | Pb% | Sn% | Zn% | Fe% | Ni%2 | Al% | Mn% | Dan% | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
1Cu value includes Ag. 2Ni value includes Co. Nota: Cu + jumlah unsur bernama, 99.5% min. Nilai tunggal mewakili maksimum. | |||||||||||
| Rem. | 0.05 | 0.20 | 0.50 | 0.30 | 0.25 | 6.30- 7.60 | 0.10 | 1.50- 2.20 | |||
Kebolehmesinan
| Aloi tembaga UNS No. | Penilaian kebolehmesinan | Ketumpatan (lb/in3 pada 68 °F) |
|---|---|---|
| C64200 | 60 | 0.278 |
Sifat mekanikal
C64200
HR50 drawn and stress relieved Temper
Size range: up to 1/2″ bars and rods inclusive
| Kekuatan tegangan, min | Yield strength, at 0.5% extension under load,, min | Elongation, in 4D, min | Hardness, internal | Teguran | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | HRB | |
| 90 | 621 | 45 | 310 | 9 | >80 inclusive | |
Size range: 1/2″ to 1″ bars and rods inclusive
| Kekuatan tegangan, min | Yield strength, at 0.5% extension under load,, min | Elongation, in 4D, min | Hardness, internal | Teguran | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | HRB | |
| 85 | 586 | 45 | 310 | 12 | >80 inclusive | |
Size range: over 1″ to 2″ bars and rods inclusive
| Kekuatan tegangan, min | Yield strength, at 0.5% extension under load,, min | Elongation, in 4D, min | Hardness, internal | Teguran | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | HRB | |
| 80 | 552 | 42 | 290 | 12 | >80 inclusive | |
Size range: over 2″ to 3″ bars and rods inclusive
| Kekuatan tegangan, min | Yield strength, at 0.5% extension under load,, min | Elongation, in 4D, min | Hardness, internal | Teguran | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | HRB | |
| 75 | 517 | 35 | 241 | 15 | >80 inclusive | |
Sifat fizikal
Sifat fizikal yang disediakan oleh CDA | |||||||||||
| Adat AS | Metrik | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Takat lebur – cecair | 1840 °F | 1004 °C | |||||||||
| Takat lebur – solidus | 1800 °F | 982 °C | |||||||||
| Ketumpatan | 0.278 lb/in3 at 68 °F | 7.69 gm/cm3 at 20 °C | |||||||||
| Graviti tentu | 7.69 | 7.69 | |||||||||
| Kekonduksian elektrik | 8% IACS at 68 °F | 0.047 MegaSiemens/cm at 20 °C | |||||||||
| Kekonduksian terma | 26 Btu/sq ft/ft hr/°F at 68 °F | 45 W/m at 20 °C | |||||||||
| Pekali pengembangan haba 68-572 | 10 · 10-6 per °F (68-572 °F) | 17.3 · 10-6 per °C (20-300 °C) | |||||||||
| Kapasiti haba tertentu | 0.09 Btu/lb/°F pada 68 °F | 377.1 J/kg pada 20 °C | |||||||||
| Modulus keanjalan dalam tegangan | 16000 ksi | 110317 MPa | |||||||||
| Modulus ketegaran | 6000 ksi | 41369 MPa | |||||||||
Sifat fabrikasi
Hartanah fabrikasi disediakan oleh CDA | |||||||||||
| Teknik | Kesesuaian | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Memateri | Tidak disyorkan | ||||||||||
| Memateri | Adil | ||||||||||
| Kimpalan oksiasetilena | Tidak disyorkan | ||||||||||
| Kimpalan arka terlindung gas | Adil | ||||||||||
| Kimpalan arka logam bersalut | Adil | ||||||||||
| Kimpalan titik | Adil | ||||||||||
| Kimpalan jahitan | Adil | ||||||||||
| Kimpalan punggung | Adil | ||||||||||
| Kapasiti untuk bekerja dengan sejuk | miskin | ||||||||||
| Kapasiti untuk menjadi panas terbentuk | Cemerlang | ||||||||||
| Penilaian Kebolehpalsuan | 80 | ||||||||||
| Penilaian kebolehmesinan | 60 | ||||||||||
Sifat terma
Sifat terma yang disediakan oleh CDA *Suhu diukur dalam Fahrenheit. | |||||||||||
| Rawatan | minimum* | Maksimum* | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Penyepuhlindapan | 1100 | 1300 | |||||||||
| Rawatan panas | 1300 | 1600 | |||||||||
Proses fabrikasi biasa
Forging, hot forming, machining
Proses fabrikasi biasa yang disediakan oleh CDA
