403cb ferritic stainless steel is a lower carbon than the grade 1.4006. Unlike the martensitic grade 1.4006 this grade is NOT hardenable. It has Good formability, especially at deep drawing applications, not susceptible to SCC, Higher heat conductivity compared to austenitic.



%C ≤%Si ≤%Mn ≤%P ≤%S %Cr %Mo %Ni %Nb  % Others
≤0,08 1,00 1,00 0,045 0,030 12,0-14,0 0.35-0.45 0.5-0.8 0.2-0.3


Hot working:

Forging temperature range: 1200-850℃

Note: Heat to 1200 ℃. Do not forge below 850.

Heat treatment:

Full annealing Normalizing. Tempering temprature
815-900 Don’t normalize 600-760


Main application:

Structural parts in water and steam

Shape of product:

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