Vibration-damping alloy of high strength

A vibration-damping alloy of high strength 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, more than 0.50 wt. % Si, those proportions of Al and Si which fall within the range defined in FIG. 2 by the lines connecting points A.sub.6 (Al:

• 7.45 wt. %;
• Si:
• 0.55 wt. %), B.sub.6 (Al:
• 3.30 wt. %;
• Si:
• 1.50 wt. %), C.sub.6 (Al:
• 1.00 wt. %;
• Si:
• 2.75 wt. %), D.sub.6 (Al:
• 1.00 wt. %;
• Si:
• more than 0.50 wt. %) and E.sub.6 (Al:
• 7.50 wt. %;
• Si:
• more than 0.50 wt. %), and that proportion of Mn which ranges from 0.1 wt. % to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.

A vibration-damping alloy of high strength 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, more than 0.50 wt. % Si, those proportions of Al and Si which fall within the range defined in FIG. 3 by the lines connecting points A.sub.8 (Al:

• 5.35 wt. %;
• Si:
• more than 0.50 wt. %), B.sub.8 (Al:
• 5.35 wt. %;
• Si:
• 0.80 wt. %), C.sub.8 (Al:
• 3.30 wt. %;
• Si:
• 1.00 wt. %), D.sub.8 (Al:
• 2.30 wt. %;
• Si:
• 1.40 wt. %), E.sub.8 (Al:
• 1.00 wt. %;
• Si:
• 2.35 wt. %), and F.sub.8 (Al:
• 1.00 wt. %;
• Si:
• more than 0.50 wt. %), and that proportion of Mn which ranges from 0.1 wt. % to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.

A vibration-damping alloy of high strength 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, more than 0.50 wt. % Si, those proportions of Al and Si which fall within the range defined in FIG. 4 by the lines connecting points A.sub.10 (Al:

• 4.60 wt. %;
• Si:
• more than 0.50 wt. %), B.sub.10 (Al:
• 4.60 wt. %;
• Si:
• 0.70 wt. %), C.sub.10 (Al:
• 3.20 wt. %;
• Si:
• 0.90 wt. %), D.sub.10 (Al:
• 2.55 wt. %;
• Si:
• 1.15 wt. %), E.sub.10 (Al:
• 1.00 wt. %;
• Si:
• 2.15 wt. %), and F.sub.10 (Al:
• 1.00 wt. %;
• Si:
• more than 0.50 wt. %), and that proportion of Mn which ranges from 0.1 wt. % to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.

A vibration-damping alloy of high strength 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, more than 0.50 wt. % Si, those proportions of Al and Si which fall within the range defined in FIG. 5 by the lines connecting points A.sub.12 (Al:

• 4.00 wt. %;
• Si:
• more than 0.50 wt. %), B.sub.12 (Al:
• 4.00 wt. %;
• Si:
• 0.70 wt. %), C.sub.12 (Al:
• 2.40 wt. %;
• Si:
• 0.95 wt. %), D.sub.12 (Al:
• 1.00 wt. %;
• Si:
• 1.90 wt. %), E.sub.12 (Al:
• 1.00 wt. %;
• Si:
• 1.30 wt. %), and F.sub.12 (Al:
• 2.05 wt. %;
• Si:
• more than 0.50 wt. %), and that proportion of Mn which ranges from 0.1 wt. % to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.