SUS309S、S30908

Stainless steel: SUS309S

characteristic:

SUS309S stainless steel, excellent corrosion resistance and strength, suitable for parts with working temperature of 1000 ℃. SUS309S has excellent high temperature acid resistance and high temperature strength.

use:

SUS309S stainless steel is used in exhaust machines, heat treatment furnaces and heat exchangers.

 

Chemical composition:

Grade	C≤	Si≤	Mn≤	S≤	P≤	Cr	Ni
SUS309S	0.08	1.00	2.00	0.030	0.045	22.00 24.00	12.00 15.00

 

Mechanical properties:

Tensile strength σb (MPa): ≥520

Conditional yield strength σ0.2 (MPa): ≥206

Elongation δ5 (%): ≥40

Section shrinkage ψ (%): ≥60

Hardness: ≤187HB; ≤90HRB; ≤200HV

 

Heat treatment specifications and metallographic structure:

Heat treatment specifications: 1) rapid solution cooling at 920 ～ 1150 ℃; 2) stabilizing treatment can be performed according to the requirements of the buyer. The heat treatment temperature is 850 ～ 930 ℃, but it must be specified in the contract.

Metallographic structure: the organization is characterized by austenite type.

 

Delivery status:

Generally, it is delivered in a heat-treated state, and the type of heat treatment is specified in the contract; if it is not specified, it is delivered in a non-heat-treated state.