High strength metal alloys with high magnetic saturation induction and method

A hammerbank for use in an impact printer comprising:

• a hammerbank frame;
• a plurality of hammersprings;
• a permanent magnetic means associated with said hammerbank for drawing said hammersprings into a retracted and mechanically stressed mode and which can then be released by overcoming the permanent magnetic means through an electrical means;
• said hammersprings being formed at least in part of a high strength metal alloy having high magnetic saturation induction consisting essentially of, in percent by weight:
• about 20% to about 35% Co;
• about 2% to about 6% Ni;
• about 0% to about 0.15% C;
• about 0.75% to about 3% M;
• 0% to about 3.0% Cr;
• 0% to about 2% Mn;
• 0% to about 0.02% Si;
• 0% to about 0.003% P;
• 0% to about 0.001% S;
• 0% to about 0.005% O.sub.2 +N.sub.2 ;
• with the balance comprised of Fe.

A line-printer hammerspring comprised of a high strength metal alloy having high magnetic saturation induction consisting essentially of, in percent by weight:

• about 20% to about 35% Co;
• about 2% to about 6% Ni;
• 0% to about 0.15% C;
• about 0.75% to about 3% Mo;
• 0% to about 3.0% Cr;
• 0% to about 2% Mn;
• 0% to about 0.02% Si;
• 0% to about 0.003% P;
• 0% to about 0.001% S;
• 0% to about 0.005% O.sub.2 +N.sub.2 ;
• with the balance Fe.

A high strength alloy steel having high magnetic saturation induction consisting essentially of, in percent by weight:

• about 20% to about 35% Co;
• about 2% to about 6% Ni;
• about 0% to about 0.15% C;
• about 0.75% to about 3% Mo;
• 0% to about 3.0% Cr;
• 0% to about 2% Mn;
• 0% to about 0.02% Si;
• 0% to about 0.003% P;
• 0% to about 0.001% S;
• 0% to about 0.005% O.sub.2 +N.sub.2 ;
• with the balance comprised of Fe.