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Sihe Steel
Sihe Steel
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 to 304 or 309 stainless steel in most environments because it has high nickel and chromium content. It offers high corrosion resistance and strength in temperatures up to 1149°C (2100°F). The following details outline the specifications and properties of grade 310S stainless steel.
The following table displays 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) |
We manufacture custom sizes of stainless steel coiled tubing according to specific requirements.
| 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 choice for critical applications as it eliminates the risks of impurities often associated with welded options.
What are the main application fields for 310S stainless steel coiled tubes?
They are widely utilized in refrigeration equipment, evaporators, condensers, food & beverage processing, oil and gas piping, geothermal plants, and instrumentation systems.
Why is Grade 310S preferred over standard 304 or 309 stainless steel?
Grade 310S features higher nickel and chromium content, giving it superior corrosion resistance and elevated mechanical strength in high-temperature environments up to 1149°C (2100°F).
What is the advantage of using seamless coiled tubing instead of welded options?
Seamless coiled tubing eliminates the risk of weld seam impurities, offers higher system safety, minimizes leak paths by reducing the need for joint fittings, and lowers overall installation costs.
What testing procedures do the coiled tubes undergo?
The coiled tubes undergo multiple quality inspections including compression tests, flaring tests, bending tests, 100% hardness checks, tensile stretch tests, and air tightness tests.
What standards do the stainless steel coiled tubes conform to?
They are manufactured in compliance with international standards, primarily ASTM A269 and ASTM A249 specifications.
What custom lengths and size ranges are available?
Coiled tubing can be manufactured in continuous lengths ranging from 300 to 3500 meters per coil, with outer diameters from 6.52mm to 20mm and wall thicknesses from 0.2mm to 2mm.
