Wear-resistant copper-based alloy

A wear-resistant copper-based alloy useful for a surface building-up operation, consisting essentially of:

• nickel (Ni) in an amount of from 10.0 to 30.0% by weight;
• iron (Fe) in an amount of from 2.0 to 15.0% by weight;
• cobalt (Co) in an amount of from 2.0 to 15.0% by weight;
• silicon (Si) in an amount of from 0.5 to 5.0% by weight;
• chromium (Cr) in an amount of from 1.0 to 10.0% by weight;
• at least one first optional element selected from the group consisting of molybdenum (Mo), titanium (Ti), zirconium (Zr), niobium (Nb) and vanadium (V) in an amount of from 2.0 to 15.0% by weight;
• an amount of carbon (C) and oxygen (O) effective to inhibit welding bead cracking during build-up of said alloy;
• and
• the balance of copper (Cu) and inevitable impurities;
• wherein a content of said C, designated by "X"% by weight, and a content of said O, designated by "Y"% by weight, satisfy the following relationships (1), (2) and (4);
• (1):
• 0<"X".ltoreq.0.5;
• (2):
• 0<"Y".ltoreq.0.05;
• and
• (3):
• "Y".gtoreq.(-0.6)("X")+0.03;
• and
• lead (Pb), one of said inevitable impurities, is restricted to an amount of 0.02% by weight or less.

A wear-resistant copper-based alloy useful for a surface building-up operation, consisting essentially of:

• nickel (Ni) in an amount of from 10.0 to 30.0% by weight;
• iron (Fe) in an amount of from 2.0 to 15.0% by weight;
• cobalt (Co) in an amount of from 2.0 to 15.0% by weight;
• silicon (Si) in an amount of from 0.5 to 5.0% by weight;
• chromium (Cr) in an amount of from 1.0 to 10.0% by weight;
• at least one first optional element selected from the group consisting of molybdenum (Mo), titanium (Ti), zirconium (Zr), niobium (Nb) and vanadium (V) in an amount of from 2.0 to 15.0% by weight;
• the balance of copper (Cu) and inevitable impurities;
• wherein lead (Pb), one of said inevitable impurities, is restricted to an amount of 0.02% by weight or less and amounts of carbon (C) and oxygen (O) are each greater than zero, the carbon and oxygen being effective to inhibit welding bead cracking during build-up of said alloy.