1.6511 39NiCrMo4


1.6511 is a medium-carbon steel. This steel does not age hardened. Core properties of 1.6511 is produced by conventional quenching and tempering. Case hardness lower than the nickel-aluminum steel may be developed.


%C %Si %Mn %P %S Cr Mo Ni
0.32-0.40 Max 0.4 0.5-0.8 Max 0.035 Max 0.035 0.9-1.2 0.15-0.3 0.9-1.2


Hot working:

Forging temperature range: 1100-850℃
Note: Heat to 1200 ℃. Do not forge below 850.
Heat treatment:

Annealing ℃ Normalizing ℃ Hardening temperature Tempering temperature ℃
790-845 845-900 830-855 To desired hardness


Main application:

Wire, and seamless mechanical tubing
Shape of product:

Round, flat, step shape, ring, disc other shape depend on customer needs