What is 309S grade stainless steel?
Compared to 304 and 316 stainless steels, 309S offers superior high-temperature strength, particularly in the range of 870–900°C (1600–1650°F), making it ideal for applications such as furnace parts, heat exchangers, and gas turbines. Unlike 310 stainless steel, which has a higher chromium and nickel content for even better high-temperature performance, 309S offers a more cost-effective option where extreme temperatures above 1000°C are not expected.
1.4833 stainless steel equivalent material
EN 1.4833 stainless steel is equivalent to AISI 309S. It is also known as X12CrNi23-13. This grade is an austenitic stainless steel known for its heat resistance and is often used in high-temperature applications.
1.4833 stainless steel Chemical Composition
| 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 |
1.4833 stainless steel Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8 g/cm3 | 0.289 lb/in³ |
| Melting point | 1454°C | 2650°F |
1.4833 stainless steel Mechanical Properties
| 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 |
What is the difference between 309 and 309S stainless steel?
The main difference between 309 and 309S stainless steel is the carbon content; 309S has a significantly lower carbon content, which improves its weldability and reduces the risk of carbide precipitation. Both alloys are austenitic stainless steels known for their high heat resistance, excellent oxidation resistance, and good strength at elevated temperatures, but the low-carbon 309S is the preferred choice for welded structures.
What is the difference between 309 SS and 310ss?
Type 309/309S: have added chromium and nickel for more corrosion resistance and high temperature scaling resistance. 309S contains less carbon to minimize carbide precipitation. Type 310S: have higher nickel content than 309/309S to further increase scaling resistance.
Can 309 stainless steel be welded?
Yes, 309 stainless steel filler metal can be used to weld stainless steel, although it is more commonly used for welding dissimilar metals. While 309 stainless steel is commonly used to join stainless steel and carbon steel, it is also an ideal choice for joining certain grades of stainless steel, particularly where there is a risk of cracking or when the base metal composition is unknown.
GNEE offers high-quality 309S stainless steel in a variety of product forms at wholesale prices. As a purchasing manager, you can find the best deals for your industry's needs. We offer a wide range of stainless steel sheet grades to meet your needs. You can trust us for reliable supply and cost-effective solutions. Email: es@gescosteel.com
309S Steel Alloy ASTM & ASME Standard
Standard Specification
| Standard Type | Standard Number | Description |
| ASTM | ASTM A240 | Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and General Applications |
| ASTM A276 | Stainless Steel Bars and Shapes | |
| ASTM A312 | Stainless Steel Pipes | |
| ASTM A480/A480M | General Requirements for Flat-Rolled Stainless Steel | |
| ASME | ASME SA240 | Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and General Applications |
| ASME SA276 | Stainless Steel Bars and Shapes | |
| ASME SA312 | Stainless Steel Pipes | |
| ASME SA480/SA480M | General Requirements for Flat-Rolled Stainless Steel |
