High-hardness hardfacing alloy powder

A high-hardness hardfacing alloy powder, consisting essentially of:

• 1.18≦C≦3.0 mass %,
• 0.5≦Si≦5.0 mass %,
• 10.0≦Cr≦30.0 mass %, and
• 16.0<Mo≦40.0 mass %,
• and optionally at least one element selected from the group consisting of:
• Ca≦0.03 mass %,
• P≦0.03 mass %,
• Ni≦5.0 mass %, and
• Fe≦5.0 mass %
• with the balance being Co and unavoidable impurities, wherein
• a total amount of Mo and Cr satisfies
• 40.0≦Mo+Cr≦70.0 mass % and
• a matrix of the high-hardness facing powder has both a Laves phase and a Cr-based carbide.

A high-hardness hardfacing alloy powder, consisting of:

• 1.18<C≦3.0 mass %,
• 0.5≦Si≦5.0 mass %,
• 10.0≦Cr≦30.0 mass %, and
• 16.0<Mo≦40.0 mass %,
• and optionally at least one element selected from the group consisting of:
• Ca≦0.03 mass %,
• P≦0.03 mass %,
• Ni≦5.0 mass %, and
• Fe≦5.0 mass %
• with the balance being Co and unavoidable impurities, wherein a total amount of Mo and Cr satisfies
• 40.0≦Mo+Cr≦70.0 mass % and
• a matrix of the high-hardness facing powder has both a Laves phase and a Cr-based carbide.