1>Certificate:ISO9001:2008 2>Diameter:0.03mm ~ 7.0mm 3>Yield Strength: >=138Mpa 4>Strength:240 5>Elongation: >=20% > ... the oxide;3. Bright: That is, no chemical treatment, the surface is the material color, glossy.Features 1.Toughness, light weight, 2. High ... property of acid and alkali resistance,3.Bear high & low temperature, ...