320S18、320S31、320S17

characteristic:
320S18 stainless steel plate is added to 320S16 steel to improve intergranular corrosion resistance.

Scope of application:
320S18 is used in equipment that resists sulfuric acid, phosphoric acid, acetic acid, and acetic acid.

Chemical composition:

Grade	C≤	Si≤	Mn≤	S≤	P≤	Cr	Ni	N	Ti≥
320S18	0.08	1.00	2.00	0.030	0.045	16.50 18.50	11.00 14.00	2.00 2.50	5×C%

 

Mechanical properties:

Tensile strength σb (MPa): ≥530

Conditional yield strength σ0.2 (MPa): ≥205

Elongation δ5 (%): ≥40

Section shrinkage ψ (%): ≥55

Hardness: ≤187HB; ≤90HRB; ≤200HV

 

Heat treatment specifications and metallographic structure:

Heat treatment specifications: solid solution 1000 ~ 1100 ℃ rapid cooling.

Metallographic structure: the organization is characterized by austenite type.

 

Delivery status:

Generally delivered in the heat-treated state, and the type of heat treatment is specified in the contract;