It is a C-Mn steel. This steel is generally used for the manufacture of pipelines




%C ≤%Si ≤%Mn ≤%P ≤%S %Cr ≤%Mo
0,3-0.35 0.2-0.3 0.95-1.35 0.03 0.015 0.3-0.5 0.06-0.01

Hot working:

Forging temperature range: 1260-850℃
Note: Heat to 1260 ℃. Do not forge below 850.
Heat treatment:

Soft annealing ℃ HB 30-soft annealed Normalizing ℃ Hardening temperature for quenching in Water ℃ Hardening temperature for quenching in Oil ℃ Tempering temperature ℃
650-700 850-880 820-850 830-860 550-660


Main application:

Arbors and discs of large cross section, pipe line
Shape of product:

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