Stainless Steel 316H Pipes & Tubes Supplier, Exporter & Stockist in India
Stainless Steel 316H Pipe (UNS S31609) is a high-carbon austenitic stainless steel pipe manufactured to ASTM A312 TP316H and ASME SA312 standards. It contains 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, with a controlled carbon content of 0.04–0.10% that provides superior creep strength, tensile strength (515 MPa min), and long-term performance at elevated temperatures up to and above 500°C. Available as Stainless Steel 316H Pipes & Tubes in seamless, welded, ERW, and EFW construction in sizes from ½" NB to 100" NB,
the 316H pipe is the preferred choice for petrochemical processing, power generation, boiler systems, nuclear applications, and pharmaceutical manufacturing. As trusted 316H stainless steel suppliers, Amardeep Steel Centre supplies and exports 316H tubing and pipes worldwide from Mumbai stock with EN 10204 3.1 Mill Test Certificates and IBR certification.
What is Stainless Steel 316H Pipe?
Stainless Steel 316H Pipe is the high-carbon version of the widely used Grade 316 molybdenum-bearing austenitic stainless steel. The "H" designation denotes high carbon with carbon specified between 0.04% and 0.10% which significantly enhances the material's performance at elevated temperatures compared to standard 316 or the low-carbon 316L variant.
The combination of chromium, nickel, and molybdenum gives TP316H excellent corrosion resistance, while its austenitic microstructure provides exceptional toughness across a wide temperature range from cryogenic conditions down to −196°C all the way up to sustained high-temperature service above 600°C. The ASTM standard also requires a controlled grain size of ASTM No. 7 or coarser, which is essential for maximising creep strength in long-term high-temperature service.
Amardeep Steel Centre manufactures and stocks ASTM A312 TP316H pipes in both seamless and welded construction, complying with ASTM, ASME, and API standards, and exports to 50+ countries worldwide. We also supply related high-temperature grades including Stainless Steel 321H Pipes & Tubes and Stainless Steel 347H Pipes & Tubes for applications requiring stabilised high-carbon grades.
316H vs 316 vs 316L Grade Comparison
Selecting the right 316 family grade depends on your operating temperature and corrosion requirements. The comparison below clarifies the key differences between Stainless Steel 316 Pipes & Tubes,Stainless Steel 316L Pipes & Tubes, and Stainless Steel 316H Pipes & Tubes:
| Property | 316 | 316L | 316H |
|---|---|---|---|
| UNS Number | S31600 | S31603 | S31609 |
| Carbon Content | 0.08% max | 0.03% max | 0.04-0.10% |
| Best For | General purpose | Corrosion resistance, welded heavy sections | High-temperature service, creep applications |
| Tensile Strength (min) | 515 MPa | 485 MPa | 515 MPa |
| Yield Strength 0.2% (min) | 205 MPa | 170 MPa | 205 MPa |
| Sensitisation Risk | Moderate | Low | Higher, mitigated at high temperature |
| Creep Strength | Moderate | Lower | Superior |
| Temperature Range | -196°C to 800°C | -196°C to 400°C welded | -196°C to 900°C |
| Grain Size Requirement | None | None | ASTM No. 7 or coarser |
ASTM A312 TP316H Pipe Specifications
| Parameter | Detail |
|---|---|
| Standard Specifications | ASTM A312 / ASME SA312 / ASTM A213 / ASTM A249 / ASTM A269 / ASTM A358 / ASTM A376 |
| UNS Number | S31609 |
| Old British Grade | 316S51 |
| Dimensional Standards | ANSI/ASME B36.19M, ANSI/ASME B36.10M, ASTM, ASME, API |
| Seamless Pipe Size Range | ½" NB - 24" NB, up to 1200 NB on order |
| ERW / Welded Pipe Size Range | ½" NB - 24" NB |
| EFW Pipe Size Range | 6" NB - 100" NB |
| Tubing OD Range | 6.00 mm - 914.4 mm OD |
| Wall Thickness Range | 0.3 mm - 50 mm |
| Schedule Availability | SCH 5S, 10S, 10, 20, 30, 40, 40S, STD, 60, 80, 80S, XS, 120, 140, 160, XXS |
| Forms Available | Round, Square, Rectangular, Hexagonal, U-Shape, Coiled, Hydraulic |
| Length | Single Random, Double Random, Cut to Length |
| End Finish | Plain End (PE), Beveled End (BE), Threaded End (TE) |
| Surface Finish | 2B, No.1, No.4, No.8 Mirror, Electropolished, Pickled & Annealed |
Chemical Composition - SS 316H (UNS S31609)
| Element | Minimum % | Maximum % |
|---|---|---|
| Carbon (C) | 0.04 | 0.10 |
| Manganese (Mn) | - | 2.00 |
| Silicon (Si) | - | 0.75 |
| Phosphorus (P) | - | 0.045 |
| Sulphur (S) | - | 0.030 |
| Chromium (Cr) | 16.00 | 18.00 |
| Molybdenum (Mo) | 2.00 | 3.00 |
| Nickel (Ni) | 10.00 | 14.00 |
Mechanical Properties - ASTM A312 TP316H
| Property | Value |
|---|---|
| Tensile Strength (min) | 515 MPa (74,700 psi) |
| Yield Strength 0.2% Proof (min) | 205 MPa (29,700 psi) |
| Elongation in 50mm (min) | 40% |
| Hardness - Rockwell B (max) | 95 HRB |
| Hardness - Brinell (max) | 217 HB |
| Grain Size Requirement | ASTM No. 7 or coarser, mandatory for 316H |
Physical Properties - Stainless Steel 316H Tubes
| Property | Value |
|---|---|
| Density | 8,000 kg/m³ (8.0 g/cm³) |
| Elastic Modulus | 193 GPa |
| Melting Range | 1,375°C - 1,400°C |
| Thermal Expansion (0-100°C) | 15.9 µm/m/°C |
| Thermal Expansion (0-315°C) | 16.2 µm/m/°C |
| Thermal Expansion (0-538°C) | 17.5 µm/m/°C |
| Thermal Conductivity at 100°C | 16.3 W/m·K |
| Thermal Conductivity at 500°C | 21.5 W/m·K |
| Specific Heat (0-100°C) | 500 J/kg·K |
| Electrical Resistivity | 740 nΩ·m |
Available Types of Stainless Steel 316H Pipes & Tubes
316H Seamless Pipe
Extruded without weld seam. Highest pressure ratings. Preferred for critical high-temperature service.
316H Welded Pipe (ERW)
Electric Resistance Welded. Cost-effective for moderate-pressure applications. Sizes ½"–24" NB.
316H EFW Pipe
Electric Fusion Welded. Large diameter from 6"–100" NB. Filler metal permitted.
316H CDW Tube
Cold Drawn Welded. Tight dimensional tolerances for instrumentation and precision applications.
316H Square Pipe
Structural square sections in 316H for high-strength, high-temperature structural frames.
316H Rectangular Tube
Available in a range of rectangular cross-sections for structural and process applications.
316H Capillary Tube
Very small OD precision tubing for analytical, pharmaceutical, and instrumentation use.
316H U-Bend Tube
Pre-bent U-tubes for shell-and-tube heat exchangers and condensers.
ASTM Standards for 316H Stainless Steel Pipes & Tubes
| Standard | Scope |
|---|---|
| ASTM A312 / ASME SA312 | Seamless and straight-seam welded austenitic pipe for high-temperature and general corrosive service. |
| ASTM A213 / ASME SA213 | Seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes. |
| ASTM A249 / ASME SA249 | Welded austenitic steel boiler, superheater, heat-exchanger, and condenser tubes. |
| ASTM A269 / ASME SA269 | Seamless and welded austenitic stainless steel tubing for general service. |
| ASTM A358 / ASME SA358 | Electric fusion welded austenitic pipe for corrosive and/or high-temperature service. Filler metal permitted. |
| ASTM A376 / ASME SA376 | Seamless austenitic steel pipe for high-temperature central-station service. |
| ASTM A813 | Single-seam welded austenitic pipe for high-temperature and general corrosive applications. |
316H Stainless Steel Pipe — Size & Schedule Availability
| Nominal Bore (NB) | Sch 5S | Sch 10S | Sch 40 / STD | Sch 80 / XS | Sch 160 | XXS |
|---|---|---|---|---|---|---|
|
½" – ¾" |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
|
1" – 2" |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
|
2½" – 4" |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
|
5" – 6" |
✓ |
✓ |
✓ |
✓ |
✓ |
On Request |
|
8" – 12" |
✓ |
✓ |
✓ |
✓ |
✓ |
On Request |
|
14" – 24" |
✓ |
✓ |
✓ |
On Request |
On Request |
On Request |
|
Above 24" (EFW) |
Available on order up to 100" NB |
|||||
Sizes up to 24" NB available ex-stock in Mumbai. Larger sizes and non-standard schedules manufactured to order. Seamless tube OD range: 6mm – 630mm, Wall Thickness: 0.5mm – 30mm.
For Schedule 40 and Schedule 80 pipe dimensions and weights, refer to our dedicated schedule pages. For detailed pipe dimensions, see our Pipe Dimension reference guide.
316H Seamless Pipe vs Welded Pipe — Which to Choose?
When specifying 316h stainless steel pipe for your application, the choice between seamless and welded construction depends on pressure class, diameter requirements, and budget:
| Factor | Seamless 316H Pipe | Welded 316H Pipe (ERW/EFW) |
|---|---|---|
|
Construction |
No weld seam — extruded from solid billet |
Formed from strip/plate with longitudinal weld seam |
|
Pressure Rating |
Higher — preferred for critical service |
Adequate for moderate-pressure service |
|
Size Range |
½" NB to 24" NB |
½" NB to 100" NB (EFW) |
|
Cost |
Higher |
More economical |
|
Best For |
High-pressure, high-temperature, critical petrochemical, power plant |
Low-to-moderate pressure, large diameter, structural, food processing |
|
ASTM Standard |
A312, A213, A376 |
A312, A249, A358, A813 |
For a detailed technical guide on this topic, see our blog: Difference Between Seamless and Welded Pipe.
Heat Treatment of 316H Stainless Steel Pipe
316H stainless steel pipe cannot be hardened by thermal treatment. Solution treatment (annealing) is performed by heating to 1010°C – 1120°C followed by rapid cooling (water quench or forced air). This restores corrosion resistance and relieves any residual stresses from cold working or welding. Post-weld annealing is generally not required for thin-section welding; it is recommended for heavy-gauge welds and when full corrosion resistance must be maintained.
Applications of 316H Stainless Steel Pipe
Stainless Steel 316H Pipes & Tubes are specified across the most demanding industries because no other standard austenitic grade delivers the same combination of high-temperature creep resistance, corrosion protection, and pressure-bearing capability:
- Petrochemical Plants
- Power Generation
- Nuclear Plants
- Boiler Systems
- Heat Exchangers
- Pressure Vessels
- Superheater Tubes
- Chemical Processing
- Pharmaceutical
- Pulp & Paper
- Food Processing
- Marine Industry
- Cryogenic Service
- Automotive Trim
- Architecture
The high creep strength of 316h stainless steel pipe makes it especially suitable for steam and hot gas piping systems in power plants and petrochemical facilities where continuous operation at temperatures above 500°C is required. When sulfur-containing gases are absent, 316h tubing is an excellent material for hot water and steam distribution systems.
Is 316H Pipe Suitable for Nuclear and Power Generation?
Yes. Stainless Steel 316H Pipe is one of the most specified materials for nuclear and thermal power generation applications. Procurement engineers and plant designers choosing from among 316h stainless steel suppliers should note the following critical properties:
- Melting range of 1,375-1,400°C provides high-temperature structural integrity
- Minimum yield strength of 205 MPa and tensile strength of 515 MPa meet critical structural demands
- Superior short-term and long-term creep strength at operating temperatures above 500°C
- Hardness of 95 HRB ensures adequate resistance to wear and deformation
- Density of 8 g/cm³ and excellent thermal conductivity support heat transfer efficiency
- Austenitic structure provides excellent toughness even at cryogenic temperatures for safety shut-down scenarios
Both nuclear and thermal power plants rely on TP316H for water and steam circulation systems, heat exchangers, pressure vessels, and superheater assemblies. For similarly specified high-temperature grades, see Stainless Steel 310H Pipes & Tubes and Stainless Steel 309H Pipes & Tubes.
Testing & Inspection - 316H Pipes & Tubes
All Amardeep Steel Centre Stainless Steel 316H Pipes & Tubes are manufactured and tested to international standards. The following tests are available for every 316h stainless steel pipe or 316h tubing order:
| Test Type | Details |
|---|---|
| Chemical Analysis | Optical Emission Spectrometry (OES) or PMI - verifies grade conformity |
| Mechanical Testing | Tensile, yield, elongation, hardness per ASTM A370 |
| Hydrostatic Test | Each pipe hydrostatically tested per ASTM A312 |
| Non-Destructive Testing (NDT) | Ultrasonic Testing (UT), Radiographic Testing (RT), Dye Penetrant (DP) |
| Positive Material Identification (PMI) | XRF-based PMI testing on request |
| Intergranular Corrosion Test | ASTM A262 Practice E on request |
| Visual & Dimensional Inspection | OD, WT, length, straightness per relevant standards |
| Third-Party Inspection | SGS, Bureau Veritas, Lloyd's Register, TUV available on request |
Certifications & Documentation
- EN 10204 3.1 MTC
- IBR Form III-D
- NABL Approved Lab Reports
- Third-Party Inspection Reports
- PMI Test Reports
- Ultrasonic Test Reports
- Chemical Analysis Reports
- Mechanical Test Reports
- Hydrostatic Test Reports
- Manufacturer Test Certificates
- Export Documentation
- Country of Origin Certificate
For our full testing capabilities, visit our Testing page and Certificates page.
Packaging & Marking - 316H Stainless Steel Pipes
All Amardeep Steel Centre 316H pipes and tubes are packed to ensure zero damage in transit. Each pipe is individually sleeved in plastic before bundling. Standard export packaging is in hexagonal or square bundles secured with steel/nylon straps, wrapped in waterproof material, and loaded into wooden crates or containers.
Each pipe is continuously marked along its full length with:
- Manufacturer name / symbol (Amardeep Steel Centre)
- Specification (ASTM A312)
- Grade (TP316H)
- Nominal Pipe Size (NB) and Schedule (Wall Thickness)
- Manufacturing Method (Seamless / Welded / ERW / EFW)
- Heat Number
Delivery within 10-25 working days for standard stock items. Custom sizes and special requirements: lead time quoted on request. For details on our packing standards, visit our Packing & Despatch page.
316H Stainless Steel Pipe Price
The price of 316h stainless steel pipe varies based on type (seamless vs welded), size, schedule, quantity, origin (Indian / Japanese / European mills), and current raw material costs. Indicative FOB India price ranges:
| Type | Indicative Price Range (USD/MT) |
|---|---|
| 316H Seamless Pipe (standard sizes) | USD 1,200 - 5,000 / MT |
| 316H Welded / ERW Pipe | USD 1,000 - 3,500 / MT |
| 316H EFW Large Diameter Pipe | USD 2,600 - 4,500 / MT |
| 316H Capillary / Precision Tube | USD 2,800 - 5,000 / MT |
Prices are indicative only and subject to change based on market conditions. Contact us for a firm quotation valid for your specific requirement.
Use our Steel Weight Calculator to estimate material weights before requesting a quote.
Why Choose Amardeep Steel Centre for 316H Pipes & Tubes?
- Ready Stock in Mumbai: Fast dispatch on standard sizes - reduce your lead times significantly vs overseas sourcing
- Multiple Mill Sources: Indian, Japanese, Korean, and European mill origins available for specification flexibility
- Complete Documentation: EN 10204 3.1 MTC, IBR Form III-D, NABL lab reports, and third-party inspection included or available on request
- Full Size Range: Seamless from ½" to 24" NB; EFW up to 100" NB; tubing from 6mm OD with walls from 0.5mm
- All Schedules Stocked: SCH 5S through XXS available for the most common sizes ex-stock
- Export Expertise: Experienced in customs, shipping documentation, and export compliance to 50+ countries
- Competitive Pricing: Direct mill relationships enable bulk pricing with no compromises on quality
- Value-Added Processing: Cutting, polishing, beveling, threading, and custom marking available
Export Destinations - Stainless Steel 316H Pipes
Middle East: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Jordan, Iraq, Iran | Asia Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Taiwan, Philippines, Bangladesh, Sri Lanka | Europe: Germany, UK, France, Italy, Spain, Netherlands, Belgium, Poland, Russia, Norway, Denmark, Finland, Czech Republic, Austria, Switzerland | Americas: USA, Canada, Mexico, Brazil, Argentina, Chile, Colombia, Peru, Venezuela | Africa: South Africa, Nigeria, Algeria, Egypt, Libya, Angola, Kenya, Tanzania | Oceania: Australia, New Zealand
Frequently Asked Questions - 316H Stainless Steel Pipe
What is Stainless Steel 316H Pipe?
Stainless Steel 316H Pipe (UNS S31609) is the high-carbon variant of Grade 316 austenitic stainless steel. Containing chromium (16-18%), nickel (10-14%), molybdenum (2-3%), and carbon (0.04-0.10%), it is specifically designed for elevated-temperature service where superior creep strength, tensile strength, and long-term stability above 500°C are required. It is manufactured per ASTM A312 TP316H and ASME SA312.
What is the difference between 316H and 316L stainless steel pipe?
316H has high carbon (0.04-0.10%) optimised for elevated temperature strength and creep resistance. 316L has very low carbon (max 0.03%) optimised for corrosion resistance and immunity to sensitisation in welded heavy-gauge components. Use 316H for high-temperature service; use 316L for aggressive corrosive environments at moderate temperatures.
What is the melting point of 316H stainless steel?
The melting range of Stainless Steel 316H is 1,375°C - 1,400°C (2,507°F - 2,552°F).
What is UNS S31609?
UNS S31609 is the Unified Numbering System designation for Stainless Steel Grade 316H - the high-carbon member of the 316 stainless steel family. It is equivalent to AISI 316H, old British grade 316S51, and is covered under ASTM A312 TP316H.
Is 316H pipe suitable for nuclear and power generation?
Yes. 316H is widely used in nuclear and thermal power generation for steam piping, heat exchangers, pressure vessels, and boiler superheater tubes. Its high melting range, superior creep strength, and stable mechanical properties at elevated temperatures make it one of the preferred materials for power generation infrastructure.
What ASTM standard covers 316H stainless steel pipe?
The primary ASTM standards covering 316H pipes and tubes are: ASTM A312 (seamless and welded pipe), ASTM A213 (seamless boiler and heat exchanger tubes), ASTM A249 (welded tubes), ASTM A269 (general service tubing), ASTM A358 (EFW pipe), and ASTM A376 (seamless pipe for high-temperature service). ASME equivalents are SA312, SA213, SA249.
What certifications does Amardeep Steel Centre provide with 316H pipes?
Amardeep Steel Centre provides EN 10204 3.1 Mill Test Certificates, IBR Form III-D certificates, NABL-approved lab test reports, PMI test reports, ultrasonic test reports, and third-party inspection reports from SGS, Bureau Veritas, Lloyd's Register, or TUV on request. All documentation is available for export compliance.
What is the price of 316H stainless steel pipe?
316H pipe prices vary by type, size, schedule, and quantity. Indicative FOB India prices range from approximately USD 1,000-5,000 per metric tonne. Seamless and heavy-wall pipes command higher prices. Contact Amardeep Steel Centre at sales@amardeepsteel.com or +91-22-67439130 for a current competitive quotation.
What is the minimum carbon content in 316H compared to standard 316?
Standard Grade 316 has a maximum carbon content of 0.08% with no minimum specified. Grade 316H requires carbon between 0.04% (minimum) and 0.10% (maximum). This controlled minimum carbon range, combined with the grain size requirement (ASTM No. 7 or coarser), is what gives 316H its superior high-temperature strength and creep resistance.
Can 316H pipe be used for cryogenic applications?
Yes. The austenitic structure of 316H provides excellent toughness even at cryogenic temperatures down to −196°C. However, for applications where cryogenic performance is the primary concern rather than high-temperature strength, standard 316 or 316L is usually more cost-effective.
Get a Competitive Quote for Stainless Steel 316H Pipes & Tubes
Amardeep Steel Centre supplies SS 316H Pipe & Tube in seamless, welded, ERW, and EFW with complete documentation including EN 10204 3.1 MTC, IBR Form III-D, and third-party inspection on request. Ready stock in Mumbai with worldwide export capability.
