Stainless Steel 310S Pipes
Stainless steel 310S pipes, also known as SS 310S or UNS S31008, are austenitic stainless steel pipes designed for high-temperature and corrosion-intensive environments. With 24-26% chromium and 19-22% nickel content, these pipes deliver outstanding oxidation resistance up to 1040°C. Grade 310S is a low-carbon type of grade 310 stainless steel that prevents sensitisation and carbide precipitation. It is commonly used in furnace parts, heat exchangers, petrochemical plants, and aerospace components where high strength and heat resistance are required.
Stainless Steel 310S Pipe Price
Pricing for SS 310S pipes is not fixed. It changes based on size, type, and how much material is required. Buyers usually check both per kg and per foot rates before placing an order.
Approximate price range
SS 310S pipes in India generally fall between INR 350 and INR 900 per kg. Smaller sizes and welded pipes are usually on the lower side. Seamless pipes cost more because of the production method and tighter tolerances.
For bulk orders, the rate may drop slightly. Small quantity orders tend to be priced higher per kg.
Cost per foot (approx.)
The price per foot ranges from INR 180 to INR 750, depending on the wall thickness and outer diameter. Even if the length remains constant, heavier pipes quickly become more expensive.
Factors affecting price
A few basic things change the final rate:
- Nickel and chromium prices in the market
- Pipe schedule and wall thickness
- Seamless or welded type
- Surface finish and testing requirements
- Order quantity
Custom sizes or urgent supply also add to the cost. In most cases, standard sizes are easier to source and slightly cheaper.
For accurate pricing, suppliers usually need size, schedule, quantity, and end use. Without that, only a rough range can be given.
Available Types Of Stainless Steel 310S Pipes
SS 310S pipes are available in 9 standard forms to fulfil a wide range of industrial requirements, including fabrication, structural, and high-temperature applications.
- Stainless Steel 310S EFW Pipes
- SS 310S Seamless Pipes
- SS 310S Welded Pipes
- SS 310S Round Pipes
- SS 310S ERW Pipes
- SS 310S Custom Pipes
- SS 310S Square Pipes
- SS 310S Rectangle Pipes
- SS 310S Thick Wall Pipes
Stainless Steel 310S Pipe Specifications
SS 310S pipes conform to ASTM, ASME, and EN standards. The table below covers all key specification parameters, from dimensions and schedules to forms, finishes, and end types.
|
Parameter |
Details |
|
Standards |
ASTM A312, A358, A778, A789, ASME SA312 |
|
UNS Designation |
S31008 |
|
EN Equivalent |
1.4845 |
|
Outer Diameter |
6.35 mm to 609.6 mm |
|
Wall Thickness |
0.5 mm to 50 mm |
|
Pipe Schedules |
SCH 5 through SCH XXS |
|
Forms Available |
Seamless, Welded, ERW, EFW, Square, Rectangular, Hydraulic |
|
Length |
Single Random, Double Random, Custom |
|
Surface Finish |
2B, No.1, No.4, No.8, Custom |
|
End Type |
Plain End, Bevelled End, Threaded End |
Chemical Composition of Alloy 310S Pipes
The chemical composition of 310S stainless steel pipe is meticulously managed to ensure thermal stability, oxidation resistance, and structural integrity at high temperatures. The high chromium and nickel content is the primary reason that this grade outperforms standard austenitic steels in extreme conditions.
|
Element |
310S (%) |
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Silicon |
1.50 max |
|
Phosphorus |
0.045 max |
|
Sulphur |
0.030 max |
|
Chromium |
24.00 - 26.00 |
|
Nickel |
19.00 - 22.00 |
Mechanical Properties of Stainless Steel 310S Pipes
Alloy 310S pipes maintain strong mechanical performance across a wide temperature range. The grade's high tensile strength and elongation make it appropriate for thermal cycling as well as structural loads.
|
Property |
310S Value |
|
0.2% Proof stress (MPa min) |
205 |
|
Tensile strength (MPa min) |
520 |
|
Elongation % (min) |
40 |
|
Hardness HV (max) |
225 |
Size Chart of ASTM A312 TP310S
The table below provides details of SS 310S pipe sizes.
|
310S Stainless Steel Pipe OD mm |
Pipe WT mm |
Sch |
in. |
Kg/m |
|
13.72 |
3.02 |
80S |
1/4 |
0.81 |
|
42.16 |
4.85 |
80S |
1¼ |
4.53 |
|
17.15 |
3.2 |
80S |
3/8 |
1.12 |
|
88.9 |
7.62 |
80S |
3 |
15.51 |
|
21.34 |
3.73 |
80S |
1/2 |
1.65 |
|
141.3 |
15.882) |
160 |
5 |
49.87 |
|
26.67 |
3.91 |
80S |
3/4 |
2.23 |
|
219.08 |
18.23 |
120 |
8 |
91.3 |
|
33.4 |
4.55 |
80S |
1 |
3.29 |
|
168.28 |
10.97 |
80S |
6 |
43.21 |
|
42.16 |
6.352) |
160 |
1¼ |
5.69 |
|
114.3 |
13.492) |
160 |
4 |
34.05 |
|
60.33 |
5.54 |
80S |
2 |
7.6 |
|
168.28 |
14.27 |
120 |
6 |
54.75 |
|
73.03 |
5.16 |
40S |
2½ |
8.77 |
|
219.08 |
23.012) |
160 |
8 |
112.97 |
|
141.3 |
6.55 |
40S |
5 |
22.1 |
Key Features of SS 310S Pipes
Alloy 310S pipes offer 6 key features that make them the preferred option in demanding environments.
- High temperature resistance
- Good corrosion resistance
- Strong oxidation resistance
- High strength and toughness
- Easy formability and weldability
- Hygienic and non-reactive surface
Applications Of Stainless Steel 310S Pipes
SS 310S pipes are used across 7 industries where thermal stability and corrosion resistance are essential.
- Chemical and petrochemical industries
- Heat exchangers and furnace components
- Oil and gas sector
- Construction and architectural use
- Pharmaceutical and food processing industries
- Aerospace
- Thermal Processing/ Heavy Industry
How To Choose The Right SS 310S Pipe Supplier?
Choosing the right supplier determines whether you receive material that meets the exact mechanical and chemical requirements of your application. Follow the given steps before finalising the supplier.
Evaluate the manufacturer's technical expertise
A reliable supplier understands the metallurgical differences between SS 310 and 310S and can recommend the right schedule, form, and finish for your application. Ask about in-house testing and metallurgical support.
Check grade availability and product range
Ensure that the supplier provides a wide range of SS 310S pipe types, such as seamless, welded, ERW, EFW, square, and rectangular. More options help cut lead time and make sourcing easier.
Verify quality certifications and testing capabilities
Search for ISO 9001, PED, and material test certificates (MTCs) as per EN 10204 3.1 or 3.2. In-house hydrostatic, eddy current, and ultrasonic testing ensure material traceability and compliance.
Examine the strength of their raw material sourcing
Quality starts with raw material. A reliable supplier provides equivalent certified mills, which provide better consistency in chemical composition and mechanical properties across batches.
Assess customisation capabilities
If your project requires non-standard dimensions, custom wall thickness, or specific finishes, confirm that the supplier has the production capability to accommodate these requirements without inflating lead times.
Review delivery timelines and supply capacity
For large orders, choose a supplier who has enough stock and production capacity to deliver on time. Ask for references or proof of past bulk orders.
Stainless Steel 310S Pipes Suppliers
Stainless Steel 310S Pipes FAQ's
SS 310S material costs between INR 350 and INR 900 per kg in India. The actual costing varies depending on the product type (pipe, sheet, or bar), pipe schedule, surface quality, and order quantity.
SS 310S is a low-carbon austenitic stainless steel grade under UNS S31008. The reduced carbon content (0.08% max) compared to standard grade 310 makes it resistant to sensitisation and intergranular corrosion, especially in high-temperature welded applications.
The primary difference is carbon content. SS 310 has up to 0.25% carbon, while SS 310S is restricted to 0.08% max. The lower carbon in 310S prevents carbide precipitation at grain boundaries during welding or prolonged high-temperature exposure, making it more suitable for welded assemblies..
Alloy 310S is available as pipes (seamless, welded, ERW, EFW), sheets, plates, coils, bars, rods, flanges, fittings, and fasteners. Depending on the use, each form is manufactured in accordance with ASTM, ASME, or EN standards.
SS 310S pipes are available in outer diameters ranging from 6.35 mm to 609.6 mm and wall thicknesses ranging from 0.5 mm to 50 mm for pipe schedules SCH 5 to SCH XXS. Custom sizes are provided based on the project requirements.