309S stainless steel
The Chinese grade of 309S is 0Cr23Ni13. The characteristics and application of American standard S30908 (American AISI, ASTM) are better than 0Cr19Ni9 in corrosion resistance and heat resistance. We can provide 309S stainless steel pipes, plates, coils, etc.
Introduction
The 309S is a variant of the lower carbon 309 stainless steel for use where welding is required. The lower carbon content minimizes the carbide precipitation in the heat-affected zone near the weld, which may result in intercrystalline corrosion (welding erosion) of stainless steel in some environments.
The 309S is a free cutting stainless steel containing sulfur for use where free cutting and surface finish are required.It can withstand repeated heating below 980 ℃, with high temperature strength, oxidation resistance and carburizing resistance.
The following table shows the chemical composition of grade 309S stainless steel.
Element |
Content (%) |
|---|---|
Iron, Fe |
60 |
Chromium, Cr |
23 |
Nickel, Ni |
14 |
Manganese, Mn |
2 |
Silicon, Si |
1 |
Carbon, C |
0.080 |
Phosphorous, P |
0.045 |
Sulfur, S |
0.030 |
The mechanical properties of annealed grade 309S stainless steel are displayed in the following table.
Properties |
Metric |
Imperial |
|---|---|---|
Tensile strength, ultimate |
620 MPa |
89900 psi |
Tensile strength, yield (0.2%) |
310 MPa |
45000 psi |
Izod impact |
120 - 165 J |
88.5 - 122 ft-lb |
Modulus of elasticity |
200 GPa |
29000 ksi |
Shear modulus |
77 GPa |
11200 ksi |
Poissons ratio |
0.3 |
0.3 |
Elongation at break (in 50 mm) |
45% |
45% |
Hardness, Brinell (converted from Rockwell B hardness) |
147 |
147 |
Hardness, Knoop (converted from Rockwell B hardness) |
164 |
164 |
Hardness, Rockwell B |
85 |
85 |
Hardness, Vickers (converted from Rockwell B hardness) |
169 |
169 |
Application
Chemical equipment: Due to its corrosion resistance, 309S stainless steel is often used to manufacture chemical equipment and pipelines, especially under high temperature and highly corrosive working conditions.
Oil and gas industry: 309S stainless steel is used to manufacture oil and gas extraction equipment, pipelines, etc.
Heat treatment equipment: 309S stainless steel is suitable for manufacturing parts of high-temperature equipment such as heat treatment furnaces and annealing furnaces.
Our Teams
We Can Supply
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Steel Plates
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Steel Pipes
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Steel Coils
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Alloy Steels
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Stainless Steel
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Profile Steels
Why Choos Us?
1. We have our own factory, complete quality management system, and can provide customized services.
2. Fifteen years of steel export experience, with own agents in Bangladesh, Turkey, Cameroon and other countries;
3. Product quality is guaranteed, and the ship plates are certified by nine major classification societies. Various testing and services can be provided, and third-party testing is accepted;
4. Professional after-sales service team to provide various services to our customers.
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Pakistan 899.400 Tons BV E550 Sh
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1653 tons CCS-AH36 ship building
This regular client come from Guyana, and they have service for Guyana government for many years,they have purchased our 1653tons CCS-AH36 ship building steel plate for cruiser project.
