S30403 is a low-carbon austenitic stainless steel material, which is an international standard grade of 304L stainless steel. Among them, the "L" in 304L stands for low carbon. S30403 is similar to the common 304 stainless steel in chemical composition and performance, but has some unique characteristics due to its lower carbon content. The following is a detailed analysis of the material of S30403 stainless steel.
What Is S30403 Stainless Steel?
S30403 is the grade name of low-carbon austenitic stainless steel defined according to international standards (such as ASTM and ASME standards). It is similar to standard 304 stainless steel in composition and performance, but s30403 has a lower carbon content (≤ 0.03%). The reduction in carbon content makes it more able to inhibit the precipitation of chromium carbide during welding and heat treatment, thereby improving the ability to resist intergranular corrosion.
S30403 Stainless Steel Naming Rules:
S30403 is a brand name based on ASTM (American Society for Testing and Materials) standards:
"S" indicates that it belongs to the austenitic stainless steel series.
"304" indicates that it is a variant of standard 304 stainless steel.
"03" indicates that the carbon content of the material is controlled at a low level (≤0.03%).
S30403 Stainless Steel Grade Comparison Table:
|
Standard |
GB (GB/T20878-2007) |
UNS (ASTMA240/240M-15) |
JIS (JIS G4305:2012) |
EN (EN 10028-7:2008EN 10088-1:2014) |
|
S30403 |
022Cr19Ni10 |
S30403 304L |
SUS304L |
1.4306 X2CrNi19-11 |
Chemical Composition Of S30403 Stainless Steel:
|
Grade |
C |
Cr |
Ni |
Mn |
Si |
P |
S |
|
S30403 |
≤0.03% |
18-20% |
8-12% |
≤2.00% |
≤0.75% |
≤0.045% |
≤0.03% |
Mechanical Properties Of S30403 Stainless Steel:
|
Property |
Tensile Strength |
Yield Strength |
Elongation |
Hardness (HB) |
|
Typical Value |
≥485 MPa(70,000 psi) |
≥170 MPa(25,000 psi) |
≥40%(in 50 mm) |
201 HB max |
Features Of S30403 Stainless Steel:
Corrosion resistance: S30403 stainless steel has excellent corrosion resistance, and its low carbon content significantly reduces the risk of intergranular corrosion.
- Atmospheric corrosion resistance: Suitable for humid and neutral environments.
- Weak acid and alkali resistance: Can resist corrosion from low concentrations of nitric acid, acetic acid, ammonia, etc.
- Pitting resistance: Good performance in chloride environments, but not suitable for high concentration chloride ion environments.
Good welding performance S30403 will not cause carbide precipitation due to high temperature during welding, reducing the tendency of intergranular corrosion in the welding area.
High toughness and plasticity: This material has high tensile strength and good ductility.
Low temperature performance: S30403 can still maintain good toughness and impact resistance in low temperature environment.
Application Areas Of S30403:
- Chemical industry: used for the production of chemical equipment, storage tanks, pipelines, etc.
- Food and pharmaceutical industry: used in food processing equipment, dairy machinery and pharmaceutical equipment.
- Building decoration: as stainless steel for construction, used for railings, guardrails, etc.
- Ship and marine engineering: used for ship pipelines and deck facilities.
S30403 is the American standard number of 304L stainless steel. We are a steel mill manufacturer, if you need it, you can contact us!
