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Sihe Steel
Sihe Steel
High-temperature resistant alloy 310s stainless steel tubing products and specifications.
Stainless steels are known as high-alloy steels. They are classified into ferritic, austenitic, and martensitic steels based on their crystalline structure.
Grade 310S stainless steel is superior than 304 or 309 stainless steel in most environments, because it has high nickel and chromium content. It has high corrosion resistance and strength in temperatures up to 1149°C (2100°F). The following datasheet gives more details about grade 310S stainless steel.
The following table shows the chemical composition of grade 310S stainless steel.
| Element | Content (%) |
|---|---|
| Iron, Fe | 54 |
| Chromium, Cr | 24-26 |
| Nickel, Ni | 19-22 |
| Manganese, Mn | 2 |
| Silicon, Si | 1.50 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
The physical properties of grade 310S stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8 g/cm³ | 0.289 lb/in³ |
| Melting point | 1455°C | 2650°F |
The following table outlines the mechanical properties of grade 310S stainless steel.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 515 MPa | 74695 psi |
| Yield strength | 205 MPa | 29733 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation | 40% | 40% |
| Reduction of area | 50% | 50% |
| Hardness | 95 | 95 |
The thermal properties of grade 310S stainless steel are given in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Thermal conductivity (for stainless 310) | 14.2 W/mK | 98.5 BTU in/hr ft².°F |
Other designations equivalent to grade 310S stainless steel are listed in the following table.
| AMS 5521 | ASTM A240 | ASTM A479 | DIN 1.4845 |
| AMS 5572 | ASTM A249 | ASTM A511 | QQ S763 |
| AMS 5577 | ASTM A276 | ASTM A554 | ASME SA240 |
| AMS 5651 | ASTM A312 | ASTM A580 | ASME SA479 |
| ASTM A167 | ASTM A314 | ASTM A813 | SAE 30310S |
| ASTM A213 | ASTM A473 | ASTM A814 | SAE J405 (30310S) |
| ITEM | Grade | Size (MM) | Pressure (Mpa) | Length (M) |
|---|---|---|---|---|
| 1 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/8″×0.025″ | 3200 | 500-2000 |
| 2 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/8″×0.035″ | 3200 | 500-2000 |
| 3 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/4″×0.035″ | 2000 | 500-2000 |
| 4 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/4″×0.049″ | 2000 | 500-2000 |
| 5 | 316L, 304L, 304 alloy 625 825 2205 2507 | 3/8″×0.035″ | 1500 | 500-2000 |
| 6 | 316L, 304L, 304 alloy 625 825 2205 2507 | 3/8″×0.049″ | 1500 | 500-2000 |
| 7 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/2″×0.049″ | 1000 | 500-2000 |
| 8 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/2″×0.065″ | 1000 | 500-2000 |
| 9 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ3mm×0.7mm | 3200 | 500-2000 |
| 10 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ3mm×0.9mm | 3200 | 500-2000 |
| 11 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ4mm×0.9mm | 3000 | 500-2000 |
| 12 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ4mm×1.1mm | 3000 | 500-2000 |
| 13 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ6mm×0.9mm | 2000 | 500-2000 |
| 14 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ6mm×1.1mm | 2000 | 500-2000 |
| 15 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ8mm×1mm | 1800 | 500-2000 |
| 16 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ8mm×1.2mm | 1800 | 500-2000 |
| 17 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×1mm | 1500 | 500-2000 |
| 18 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×1.2mm | 1500 | 500-2000 |
| 19 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×2mm | 500 | 500-2000 |
| 20 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ12mm×1.5mm | 500 | 500-2000 |
Seamless coiled tubing is the preferred solution for critical high-performance applications due to the total absence of weld seams, eliminating the risk of impurities often associated with welded tubes.
Grade 310S has high nickel (19-22%) and chromium (24-26%) contents. This composition gives the steel exceptional oxidation resistance and strength at operating temperatures up to 1149°C (2100°F).
The coiled tubing conforms to industry-standard specifications ASTM A269 and ASTM A249, ensuring reliability for general service, boilers, and heat exchanger systems.
Outer diameters range from 6.52mm to 20mm with wall thicknesses between 0.2mm to 2.0mm. Standard tolerances are ±0.1mm for outer diameter and ±10% for wall thickness.
Seamless coiled tubing prevents structural impurities that can sometimes occur along weld lines. It provides enhanced pressure resistance, lower leakage risks, reduced fitting requirements, and decreased installation costs.
The coiled tubes undergo comprehensive testing processes including compression tests, flaring tests, bending tests, 100% hardness tests, stretch tests, and air tightness tests.
Continuous coiled tubes can be supplied in lengths ranging from 300 meters to 3500 meters per coil, depending on specific diameter and thickness requirements.
