求购銅包鋼線,数量500公斤。规格要求如下:
CLADFeCu30RECUIT0.5000mm+0.010/-0.010
Rmmin. 350 Rmmax. 450 MPa A% min. 15
詳細內容:
Content of Ferro-Nickel Heart:
Ni: 41.5-42.5%
C max: 0.05%
Mn: 0.75-1.25%
Si max: 0.3%
P max: 0.02%
Fe: the rest
2. Content of Copper (non oxygen) of copper coverage: 99.95%
3. Crown (Polythickness) of copper coverage, not less: 2/1
4. Content of copper in wire (weight): 24-28%
5. Unit elongation: 20-30%
6. Ultimate strength: 480 N/mm*2
7. Coefficient of expansion for 20-400 grad. C
- axial: (65-70)10 E-7/grad C
- radial: 978-83) E-7/grad C