Austenitic SS 310 Pipes and Tubes
Stainless steel 310 pipe and tube are austenitic products developed to use in elevated temperature corrosion resistant functions. Grade 310 (UNS S31000) is usable in application conditions with moist corrodents in a temperature range lower than that which is usually considered to be high working temperature.
Mechanical Properties of SS 310
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness, MAX | |
|---|---|---|---|---|---|
| [MPA] | [MPA] | (% in 50mm) min | HRB | HB | |
| SS 310 | 515 | 205 | 40 | 95 | 217 |
| SS 310S | 515 | 205 | 40 | 95 | 217 |
Production Process stainless steel 310 pipe
Grade SS 310 or UNS S31009 is manufactured with processes like ERW ( Electric Resistance Welded), Seamless and EFW ( Electric Fusion Welding) Pipes and Tubes with different form such as round, square, rectangle, etc. having a specific end as Plain, Bevel, and Threaded with a nominal thickness of different ranges from SCH 5 to SCH XXS.
The process through which SS 310 seamless pipes and tubes can be manufactured with processes like cold pilgering, Extrusion, tube mill also Piercing followed by proper heat treatment and mechanical testing.
General Specifications of SS 310
| GRADE | UNS | OLD BRITISH | EURONORM | SWEDISH SS | JAPANESE JJ | ||
|---|---|---|---|---|---|---|---|
| BS | EN | NO | NAME | ||||
| SS 310 | S31000 | 310S24 | – | 1.484 | X15CrNi25-20 | – | SUH 310 |
| SS 310S | S31008 | 310S16 | – | 1.4845 | X8CrNi25-21 | 2361 | SUH 310S |
Fabrication and Heat Treatment
Stainless steel 310 pipe and tube are fabricated and forged in a temperature range of 975°C – 1175°C. Stainless steel 310 pipe and tube can be worked at a temperature of up to 1050°C and a light finish is applied to the bottom of the range. It is also utilized for intermittent service temperatures up to 1040°C.
SS 310 pipe and tube can have resistance to oxidation up to 2010°F (1100°C) under insignificantly cyclic conditions. SS 310 has high temperature properties with better ductility and weldability, and it is developed for high temperature service.
SS 310 Chemical Composition – Detailed Chart
| GRADE | NI | Cr | Si | S | MN | C | P | Fe | |
|---|---|---|---|---|---|---|---|---|---|
| SS 310 | MIN % | 19 | 24 | – | – | – | – | – | – |
| MAX % | 22 | 26 | 1.5 | 0.03 | 2 | 0.25 | 0.045 | BALANCE | |
| SS 310S | MIN % | 19 | 24 | – | – | – | – | – | – |
| MAX % | 22 | 26 | 1.5 | 0.03 | 2 | 0.08 | 0.045 | BALANCE |
Properties of SS 310
SS 310 pipe and tube are utilized as a part of work including modestly serious warm cycling such as fast air cooling. Although 310S has less imperviousness to carbon and nitrogen retention than the higher composites, such as 330 and 333, it is generally used as a part of tolerably carburizing environments such as experienced in petrochemical plants.
310 stainless steel tube suppliers also state that the material has better resistance to oxidation in intermittent service in the air up to 1035°C and 1050°C in continuous working conditions. The grades have good resistance to oxidation, sulfidation, and carburization. Grade 310 can be used in applications with slightly oxidizing, nitriding, cementing, and thermal cycling, even if the maximum working temperature must be decreased.
Physical Properties
| Grade | Density (g/cm3) | Melting Range °C | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat (J/Kg.K) | Electrical Resistivity (nΩ.m) | ||
|---|---|---|---|---|---|---|---|---|---|
| 0-100°C | 0-315°C | 0-538°C | at 100°C | 0-100°C | |||||
| SS 310/310S | 8 | 1400-1450 | 200 | 15.9 | 16.2 | 17 | 14.2 | 500 | 780 |
Austenitic SS 310 pipe has better resistance to thermal fatigue and cyclic heating. SS310 has astounding imperviousness to oxidation under regular temperatures to 2000°F. Cyclic conditions reduce its oxidation resistance, and a most extreme working temperature of 1900°F is usually prescribed if cycling is included.
Applications of stainless steel 310 pipe
Stainless Steel 310 Pipe & Tubes are used for various applications in multiple sectors like Defense, Fabrication, Nuclear, Marine, Sugar, etc. and also provided in niche markets like Thermal, Solar & Nuclear Power, Desalination, Automobiles, Refinery & Petrochemicals, LNG, Dairy, Oil & Gas, Chemical & Fertilizer, etc.
Specifications
Stainless steel 310/S Seamless Pipe : ASTM/ASME SA 312/ A 312
Stainless steel 310/S Seamless tube : ASTM/ASME SA 213/A 213
Stainless steel 310/S ERW Pipe : ASTM/ASME SA 312/ A 312
Stainless steel 310/S ERW Tube : ASTM/ASME SA 249/ A 249
