Vibration-damping alloy

A vibration-damping alloy containing not more than 0.01 wt. % C, not more than 0.01 wt. % N, not more than 0.01 wt. % O, not more than 0.01 wt. % p, not more than 0.01 wt. % S, those proportions of Al and Si which fall within the range defined in FIG. 4 by the lines connecting points A.sub.10 (Al:

• 4.80 wt. %;
• Si:
• 0 wt. %), B.sub.10 (Al:
• 4.80 wt. %;
• Si:
• 0.70 wt. %), C.sub.10 (Al:
• 2.90 wt. %:
• Si:
• 1.00 wt. %), D.sub.10 (Al:
• 1.35 wt. %;
• Si:
• 2.05 wt. %), E.sub.10 (Al:
• 0.55 wt. %;
• Si:
• 2.00 wt. %), F.sub.10 (Al:
• 0 wt. %;
• Si:
• 2.40 wt. %), G.sub.10 (Al:
• 0 wt. %;
• Si:
• 0.80 wt. %), H.sub.10 (Al:
• 0.55 wt. %;
• Si:
• 0.25 wt. %), I.sub.10 (Al:
• 1.60 wt. %;
• Si:
• 0.35 wt. %) and J.sub.10 (Al:
• 2.25 wt. %;
• Si:
• 0 wt. %), and less than 0.1 wt. % Mn, the balance of its composition being Fe and unavoidable impurities.

A vibration-damping alloy containing not more than 0.01 wt. % C, not more than 0.01 wt. % N, not more than 0.01 wt. % O, not more than 0.01 wt. % P, not more that 0.01 wt. % S, those proportions of Al and Si which fall within the range defined in FIG. 5 by the lines connecting points A.sub.12 (Al:

• 4.55 wt. %;
• Si:
• 0.10 wt. %), B.sub.12 (Al:
• 4.55 wt. %;
• Si:
• 0.60 wt. %), C.sub.12 (Al:
• 2.35 wt. %;
• Si:
• 1.00 wt. %), D.sub.12 (Al:
• 1.10 wt. %;
• Si:
• 1.95 wt. %), E.sub.12 (Al:
• 1.10 wt. %;
• Si:
• 1.35 wt. %) and F.sub.12 (Al:
• 2.40 wt. %;
• Si:
• 0.10 wt. %), or points G.sub.12 (Al:
• 0 wt. %;
• Si:
• 1.05 wt. %), H.sub.12 (Al:
• 0.60 wt. %;
• Si:
• 0.35 wt. %), I.sub.12 (Al:
• 0.90 wt. %;
• Si:
• 0.40 wt. %), J.sub.12 (Al:
• 0.30 wt. %;
• Si:
• 2.05 wt. %) and K.sub.12 (Al:
• 0 wt. %;
• Si:
• 2.30 wt. %), and less than 0.1 wt. % Mn, the balance of its composition being Fe and unavoidable impurities.

A vibration-damping alloy containing not more than 0.01 wt. % C, not more than 0.01 wt. % N, not more than 0.01 wt. % O, not more than 0.01 wt. % P, not more than 0.01 wt. % S, those proportions of Al and Si which fall within the range defined in FIG. 6 by the lines connecting points A.sub.14 (Al:

• 4.15 wt. %;
• Si:
• 0.20 wt. %), B.sub.14 (Al:
• 4.15 wt. %;
• Si:
• 0.60 wt. %), C.sub.14 (Al:
• 2.30 wt. %;
• Si:
• 0.90 wt. %), D.sub.14 (Al:
• 1.20 wt %;
• Si:
• 1.75 wt %), E.sub.14 (Al:
• 1.20 wt %;
• Si:
• 1.35 wt %) and F.sub.14 (Al:
• 2.70 wt. %;
• Si:
• 0.20 wt. %), or points G.sub.14 (Al:
• 0 wt. %;
• Si:
• 1.15 wt. %), H.sub.14 (Al:
• 0.60 wt. %:
• Si:
• 0.40 wt. %), I.sub.14 (Al:
• 0.80 wt. %;
• Si:
• 0.45 wt. %), J.sub.14 (Al:
• 0 wt. %;
• Si:
• 2.20 wt %), and less than 0.1 wt. % Mn, the balance of its composition being Fe and unavoidable impurities.