S44400、Z3CDT18-02、F.3123-X2CrMoNb18 2

● Characteristics and applications:

S44400 is an ultra-low carbon nitrogen, 18% chromium and 2% molybdenum, high corrosion resistance ferritic stainless steel. The steel grade is generally stabilized with niobium or titanium to avoid intergranular corrosion after welding. The steel grade is particularly suitable for various water treatment devices.

 

● Chemical composition:

Grade	C≤	Si≤	Mn≤	S≤	P≤	Cr	Mo	Ni≤	Ti+Nb+Zr	N≤
S44400	0.025	1.00	1.00	0.030	0.040	17.00  20.00	1.75 2.50	0.60	8×C% ≤0.8	0.025

 

● Mechanical properties:

Tensile strength σb (MPa): ≥412

Conditional yield strength σ0.2 (MPa): ≥245

Elongation δ5 (%): ≥20

Hardness: ≤230HV, ≤96HRB, ≤217HB

 

● Heat treatment specifications and metallographic structure:

Heat treatment specification: Annealing 800 ～ 1050 ℃ air cooling or slow cooling.

Metallographic structure: The structure is characterized by ferrite type.

 

● Delivery status:

Delivery in the annealed state.