SUS304L、S30403、SCS19

Stainless steel: SUS304L

Characteristic:

SUS304L has all the characteristics of SUS304; excellent corrosion resistance and heat resistance; good corrosion resistance can also be maintained after welding or stress relief; deep drawing and polishing.

use:

Used in chemical, coal and petroleum environments with high resistance to intergranular corrosion, equipment and equipment; outdoor decorative materials, heat-resistant parts and parts with difficult heat treatment. Frozen Container Frame and exterior materials, automobile exhaust pipe (below 800 ℃), heat-resistant equipment parts.

 

Chemical composition:

Grade	C≤	Si≤	Mn≤	S≤	P≤	Cr	Ni
SUS304L	0.03	1.00	2.00	0.030	0.045	18.00  20.00	9.00  13.00

 

Mechanical properties:

Tensile strength σb (MPa) ≥481,

Conditional yield strength σ0.2 (MPa) ≥176,

Elongation δ5 (%) ≥40,

Section shrinkage ψ (%) ≥60,

Hardness: ≤187HB; ≤90HRB; ≤200HV

 

Heat treatment specifications and metallographic structure:

Heat treatment specifications: solid solution 1010 ~ 1150 ℃ rapid cooling.

Metallographic structure: the organization is characterized by austenite type.

 

The difference between SUS304L and SUS304:

SUS304L and SUS304 have different characteristics and carbon content.

Used in chemical, coal and petroleum environments with high resistance to intergranular corrosion, equipment and equipment; outdoor decorative materials, heat-resistant parts and parts with difficult heat treatment.

SUS304 is the basic austenitic steel with the most extensive use: excellent corrosion resistance and heat resistance; excellent low temperature strength and mechanical properties; single-phase austenite structure, no heat treatment and hardening (non-magnetic, operating temperature -196-- 800 ° C).