C75200 npib tsib xee nyiaj tseem hu ua 65-18-18 npib tsib xee nyiaj lossis German nyiaj. Nws muaj 65% tooj liab, 18% nickel, thiab 18% zinc. Qhov me me ntawm cov hlau lead ntxiv rau cov alloy txhim kho nws cov machinability. Cov hlau muaj xim dawb-dawb thiab feem ntau siv rau hauv cov ntawv thov uas xav tau ib qho zoo li nyiaj.
| Element | Cov ntsiab lus (%) |
|---|---|
| Cu | 65 |
| Zn | 17 |
| Ni | 18 |
C75200 npib tsib xee nyiaj muaj qhov ceev ntawm 8.8 g / cm³ thiab melting point ntawm 1050 degree. Nws muaj cov coefficient ntawm thermal expansion ntawm 18.4 x 10-6/K thiab thermal conductivity ntawm 24 W / mK Cov hlau muaj cov khoom siv hluav taws xob zoo heev, ua rau nws yog cov khoom siv nrov rau kev tsim hluav taws xob thiab hluav taws xob.
| Cov khoom | Metric | Imperial |
|---|---|---|
| Qhov ntom | 8.73 g / cm³ | 0.315 lb/in³ |
| Melting point | 1070 degree | Xyoo 1960 F |
C75200 npib tsib xee nyiaj muaj lub zog siab thiab zoo ductility. Nws lub zog tensile kawg yog 620 MPa, thiab nws lub zog tawm los yog 340 MPa. Lub alloy lub elongation ntawm tawg yog 35%, ua nws yooj yim formable. Nws kuj nthuav tawm qhov ua rau qaug zog zoo, ua rau nws yog cov khoom siv txhim khu kev qha rau cov ntawv thov uas muaj kev thauj khoom cyclic.
| Cov khoom | Metric | Imperial |
|---|---|---|
| Tensile zog | 386-710 MPa | 56000-103000 psi |
| Yield zog (nyob ntawm temper) | 172-621 MPa | 24900-90100 psi |
| Elongation ntawm tawg (hauv 76.2 hli) | 45% | 45% |
| Elasticity modulus | 117 GPa | 17 000 ksg |
| Poisson tus ratio | 0.34 | 0.34 |
| Machinability (UNS C36000 (dawb-txiav tooj dag)=100) | 20 | 20 |
| Shear modulus | 47 gp ua | 6820 ua |
| Cov khoom | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@ 20-300 degree /680-572 degree F) | 16.2 µm / m degree | 9. 00 µin/in degree F |
| Thermal conductivity (@ 20 ° C / 68 ° F) | 33 W/mK | 229 BTU in/hr.ft². degree F |
C75200 npib tsib xee nyiaj siv nyob rau hauv ntau yam kev siv, nrog rau cov rooj tog zaum, suab paj nruag, jewellery, thiab cov khoom dai. Nws kuj tseem tsim cov khoom siv hluav taws xob thiab hluav taws xob xws li connectors, keyboards, thiab relays. Lub alloy qhov zoo nkauj txaus siab thiab zoo heev corrosion kuj ua rau nws nrov nyob rau hauv tsim architectural hardware, xws li lub qhov rooj, xauv, thiab hinges.
C75200 npib tsib xee nyiaj muaj qhov hardness ntawm 140-180 HV. Cov hlau tuaj yeem ua kom tawv tawv los ntawm kev ua haujlwm txias, uas txhim kho nws lub zog thiab hnav tsis kam. Txawm li cas los xij, lub alloy lub ductility txo qis thaum nws hardness nce.
C75200 npib tsib xee nyiaj tuaj yeem raug muab tshem tawm los txhim kho nws cov ductility thiab machinability. Cov hlau yuav tsum tau rhuab mus rau 650 degree thiab maj mam txias hauv huab cua. Qhov no yuav tshem tawm cov kev ntxhov siab nyob hauv cov khoom thiab txhim kho nws cov formability.
C75200 npib tsib xee nyiaj tuaj yeem welded siv cov vuam vuam lossis roj vuam. Txawm li cas los xij, cov ntsiab lus ntawm cov hlau lead tuaj yeem tso tawm cov pa phem thaum lub sij hawm vuam, ua rau nws tseem ceeb heev uas yuav tsum tau siv qhov cua kom zoo thiab cov cuab yeej tiv thaiv.
C75200 npib tsib xee nyiaj tau zoo heev corrosion kuj nyob rau hauv ob qho tib si dej tshiab thiab seawater ib puag ncig. Lub alloy muaj cov ntsiab lus tooj liab siab muab cov khoom siv tshuaj tua kab mob ntuj, ua rau nws nrov hauv chav ua noj thiab khoom siv kho mob. Txawm li cas los xij, cov hlau tsis haum rau acidic los yog muaj zog oxidizing.
