The development of a new high-strength steel started from the needs of cold
forging and continued into hot- and warm-forging areas. The steel has a ve
ry low carbon content (< 0.1 % C) and chromium-boron alloying. Its hardenin
g is simple: just water quenching without tempering. Hot forgings of this s
teel are directly quenched from forging temperature, resulting in process c
ost savings and weight reduction.