| Customization: | Available |
|---|---|
| Type: | Alloy Steel Bar |
| Standard: | AISI, ASTM, DIN, JIS, GB |
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Stainless steels have high corrosion resistance when compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are further divided in to ferritic, austenitic, and martensitic steels.
Grade 348 stainless steel is similar to that of 321 stainless steel. It uses stabilizing elements such as columbium or tantalum to increase intergranular corrosion resistance. The following datasheet gives an overview of grade 348 stainless steel.
The chemical composition of grade 348 stainless steel is outlined in the following table.
| Element | Content (%) |
| Iron, Fe | 66 |
| Chromium, Cr | 19 |
| Nickel, Ni | 11 |
| Manganese, Mn | 2.0 |
| Silicon, Si | 1.0 |
| Nb + Ta | 0.8 |
| Cobalt, Co | 0.2 |
| Tantalum, Ta | 0.1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Grade | UNS | DIN | EN | AMS | ASTM | JIS | |
| 348 |
UNS S34800 |
1.4550 |
|
ASTM A580 |
- | ||
The physical properties of grade 348 stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
| Density | 8 g/cm3 | 0.289 lb/in³ |
| Melting point | 1427°C | 2600°F |
The following table shows the mechanical properties of annealed grade 348 stainless steel.
| Properties | Metric | Imperial |
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@ strain 0.200%) | 275 MPa | 39900 psi |
| Izod impact | 120 - 160 J | 88.5 - 118 ft-lb |
| Charpy impact | 160 J | 118 ft-lb |
| Shear modulus (typical for steel) | 77.0 GPa | 11200 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| 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 |
The thermal properties of grade 348 stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
| Thermal expansion co-efficient ( @ 0-100°C/32-212°F) | 17.3 µm/m°C | 9.61 µin/in°F |
| Thermal conductivity (@ 100°C/212°F) | 16.3 W/mK | 113 BTU in/hr.ft².°F |
Nuclear power industry: 348 steel is particularly suitable for the nuclear power industry due to its excellent corrosion resistance and high temperature stability. It has certain restrictions on the content of tantalum and cobalt, which makes it perform well in high temperature and high radiation environments such as nuclear reactors.
Chemical, petroleum, metallurgy, pharmaceutical and other fields: 348 steel has good wear resistance and corrosion resistance, and can be used for a long time in harsh chemical environments without rusting and damage. It is widely used in chemical, petroleum, metallurgy and pharmaceutical fields, especially in marine environments, 348 steel shows high corrosion resistance and can achieve a long service life in seawater.
Other industrial applications: 348 steel is also used in hardware kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace and other fields. It is suitable for various equipment and components that require high strength and corrosion resistance.
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