Nandini Steel is a trusted supplier and stockist of 347 stainless steel sheet in Mumbai, India. With over 2 decades of experience, we supply ASTM A240 / ASME SA-240 Type 347 stainless steel sheet in a full range of thicknesses, widths, and surface finishes. SS 347 sheet is a niobium-stabilised austenitic stainless steel with 17.0 to 19.0% chromium and 9.0 to 13.0% nickel.
The addition of Niobium + tantalum (Nb+Ta): minimum 10×C, typically ≥0.30%, maximum 1.00%. This stabilisation gives Alloy 347 sheet a clear advantage over standard austenitic grades in service temperatures reaching up to 870°C (1600°F).
ASTM A240 Type 347 sheet delivers a minimum tensile strength of 515 MPa (75 ksi) and yield strength of 205 MPa (30 ksi), with a minimum elongation of 35%. We stock 347 stainless steel sheets in thicknesses ranging from 0.5 mm to 6.0 mm and widths up to 2,500 mm. Available finishes include 2B, BA, No. 4, hairline, and mirror polish. Petrochemical plants, power generation boilers, aerospace exhaust systems, and food processing equipment all rely on this grade. We are ISO 9001 certified and supply every order with mill test certificates and third-party inspection reports.
This page covers specifications, types, chemical composition, mechanical properties, equivalent grades, sizes, industrial applications, distributors of manufacturers, pan-India supply, global supply, and frequently asked questions.
347 Stainless Steel Sheet Specifications
The following summary contains the primary specifications of 347 stainless steel sheets, including their dimensions, finishes, standards, and supply conditions.
| Parameter | Details |
| Standard | ASTM A240 / ASME SA-240 |
| AMS Specification | AMS 5512 |
| Thickness | 0.5 mm to 6.0 mm (0.020″ to 0.250″) |
| Width | 1,000 mm, 1,250 mm, 1,500 mm, 2,000 mm, 2,500 mm |
| Length | 2,000 mm, 2,500 mm, 3,000 mm, 6,000 mm; custom lengths available |
| Finish | 2B, 2D, BA, No.1, No.4, Hairline, Mirror (No.8) |
| Form | Hot Rolled (HR), Cold Rolled (CR), Shim Sheet |
| Edge | Mill Edge, Slit Edge |
| Condition | Annealed |
347 Stainless Steel Sheet Types
We supply 347 stainless steel sheets in three primary types, each suited to different applications.
SS 347 Shim Sheets
SS 347 Perforated Sheet
SS 347 Hot Rolled Sheet
SS 347 CR Sheets
Stainless Steel 347 Strip
Stainless Steel 347 Foils
Matt PVC SS 347 Sheet
2B SS 347 Sheets
347 Stainless Steel Sheet Chemical Composition
The chemical composition of SS 347 grade per ASME SA-240 is given below.
Niobium forms stable carbides with carbon. Intergranular corrosion in unstable grades is caused by chromium depletion at grain boundaries, and this reaction stops. This element was previously called columbium and graded 347 Cb sheet.
| Element | C | Mn | P | S | Si | Cr | Ni | Nb+Ta |
| Composition (%) | 0.08 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 17.0 to 19.0 | 9.0 to 13.0 | 10xC min, 1.00 max |
347 Stainless Steel Sheet Mechanical Properties
The following table shows the mechanical properties of ASTM A240 Type 347 stainless steel sheet as per ASME SA-240.
The hardness values of 201 HB / 95 HRB confirm that Alloy 347 maintains good formability while offering the creep strength needed for sustained high-temperature service.
| Property | Tensile Strength (min) | Yield Strength, 0.2% Offset (min) | Elongation in 50 mm / 2 in. (min) | Hardness (Brinell, max) | Hardness (Rockwell B, max) |
| Metric | 515 MPa | 205 MPa | 35% | 201 HB | 95 HRB |
| Imperial | 75 ksi | 30 ksi | 35% | 201 HB | 95 HRB |
347 Stainless Steel Sheet Equivalent Grades
AISI 347 sheet is recognised under several international designations. The table below lists equivalent grades across major standards for quick cross-referencing.
| Country / Standard | Designation |
| USA (UNS) | UNS S34700 |
| Europe (EN/W.Nr) | 1.4550 / X6CrNiNb18-10 |
| Japan (JIS) | SUS 347 |
| India (IS) | X04Cr18Ni11Nb |
| China (GB/T) | 06Cr18Ni11Nb |
| Sweden (SS) | SS 2338 |
| France (AFNOR) | Z6CNNb18-10 |
| UK (BS) | 347S17 |
| SAE | SAE 30347 |
347 Stainless Steel Sheet Industrial Applications
347 stainless steel sheet serves 4 major industries that require high-temperature strength and corrosion resistance. Each application is listed below.
Chemical
Power Generation
Aerospace
Food & Pharmaceutical
Chemical
Chemical & Petrochemical Processing
SS 347 sheet lines reactor vessels and heat exchangers exposed to acids and high operating temperatures.
Power Generation
Power Generation & Boiler Systems
Type 347 sheet is specified for superheater tubes and boiler baffles operating at temperatures up to 870°C.
Aerospace
Aerospace & Exhaust Systems
This grade forms exhaust manifold components and collector rings where thermal cycling resistance is critical.
Food & Pharmaceutical
Food & Pharmaceutical Processing
347 stainless steel is selected for mixing vessels and sterilisation chambers requiring a stable, corrosion-resistant surface.
347 Stainless Steel Sheet Sizes
Refer to the table below for the dimensional availability of 347 stainless steel sheets.
| Parameter | Dimensional Range / Options |
| Thickness | 0.5 mm to 6.0 mm (0.020″ to 0.250″) |
| Width | Up to 2,500 mm |
| Standard Lengths | 2,000 mm, 2,500 mm, 3,000 mm, and 6,000 mm |
| Customisation | Custom-cut sizes available on request |
Distributor of The Following Manufacturers
We are an authorised distributor of stainless steel sheets from the following mills.
Aperam
Outokumpu
Nippon Steel & Sumitomo Metal
POSCO
Jindal Stainless (JSL)
JFE Steel Corporation
Stainless Steel 347 Sheet Finish Types
Nandini Steel supplies 347 stainless steel sheet across all major Indian cities, including Mumbai, Delhi, Chennai, Kolkata, Bengaluru, Hyderabad, Pune, and Ahmedabad. Standard sizes ship ex-stock within 5 to 7 working days.
| Mumbai (Maharashtra) | Delhi | Bengaluru (Karnataka) | Chennai (Tamil Nadu) |
| Kolkata (West Bengal) | Hyderabad (Telangana) | Ahmedabad (Gujarat) | Pune (Maharashtra) |
| Jaipur (Rajasthan) | Surat (Gujarat) | Chandigarh | Lucknow (Uttar Pradesh) |
| Indore (Madhya Pradesh) | Coimbatore (Tamil Nadu) | Kochi (Kerala) | Visakhapatnam (Andhra Pradesh) |
| Nagpur (Maharashtra) | Patna (Bihar) | Bhopal (Madhya Pradesh) | Vadodara (Gujarat) |
| Mysuru (Karnataka) | Thane (Maharashtra) | Rajkot (Gujarat) | Vijayawada (Andhra Pradesh) |
| Agra (Uttar Pradesh) | Nashik (Maharashtra) | Guwahati (Assam) | Kanpur (Uttar Pradesh) |
| Faridabad (Haryana) | Gurugram (Haryana) | Noida (Uttar Pradesh) | Shimla (Himachal Pradesh) |
| Raipur (Chhattisgarh) | Udaipur (Rajasthan) | Bhubaneswar (Odisha) | Dehradun (Uttarakhand) |
| Ranchi (Jharkhand) | Jamshedpur (Jharkhand) | Chandrapur (Maharashtra) | Dhanbad (Jharkhand) |
| Aligarh (Uttar Pradesh) | Bhubaneswar (Odisha) | Aurangabad (Maharashtra) | Tiruchirappalli (Tamil Nadu) |
| Srinagar (Jammu & Kashmir) | Ludhiana (Punjab) | Warangal (Telangana) | Bikaner (Rajasthan) |
| Panaji (Goa) | Guntur |
Global Supply
We deliver SS 347 sheets to 50 countries throughout the Middle East, Southeast Asia, Africa, Europe, and North America. Each shipment carries mill test certificates, inspection reports, and necessary export documentation for you.
| Region | Countries | |||||
| Middle East | Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus, Saudi Arabia, Iran, Iraq, UAE, Qatar, Bahrain | |||||
| Africa | South Africa, Libya, Egypt, Sudan, Gabon, Nigeria, Algeria, Angola, Equatorial Guinea, The Republic Of Congo | |||||
| North America | Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, USA, Canada, Mexico, Panama | |||||
| Europe | Netherlands, Belgium, Greece, Portugal, Hungary, Denmark, Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Croatia, Slovenia, Malta, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Czech Republic | |||||
| Asia | India, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea | |||||
| South America | Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, Argentina, Bolivia, Brazil, Chile | |||||
Frequently Asked Questions
What is 347 stainless steel sheet used for?
Petrochemical, power, aerospace, and food industries all trust 347 stainless steel sheet for their toughest projects. These industries require substantial corrosion resistance and prolonged high-temperature performance ranging from 427°C to 870°C (800°F to 1600°F).
What is the difference between 347 and 304 stainless steel sheet?
At 427°C to 816°C, niobium-stabilized 347 stainless steel sheet resists intergranular corrosion. Standard 304 is unstable, making it unsuitable for critical high-temperature industrial applications. Carbide precipitates in grade 304 at these temperatures. For prolonged heat exposure, 347 SS sheet has better creep strength and service life.
What is the difference between 347 and 316 stainless steel sheet?
Niobium protects against thermal corrosion, which makes alloy 347 work well in high-temperature settings. 316 is great for marine or saltwater use because molybdenum doesn’t pit. Choose 347 for use with high temperatures and 316 for industrial applications at sea level or with chloride.
What is the difference between 321 and 347 stainless steel sheet?
Both 321 and 347 are stabilised austenitic grades, but 321 uses titanium while 347 uses niobium. 347 sheet offers slightly better corrosion resistance in strongly oxidising environments. It also performs better during intermittent high-temperature service where thermal cycling is frequent.
What are the available sizes of 347 stainless steel sheet?
The thickness of the stainless steel sheets that we stock (number 347) ranges from 0.5 mm to 6.0 mm, and their widths can reach up to 2,500 mm, while their lengths can reach up to 6,000 mm. We are experts in providing solutions that are cut to order and tailored to meet the exact requirements of the industrial project that your company is working on.
Can 347 stainless steel sheet be welded?
Yes, 347 stainless steel sheet has excellent weldability. Niobium stabilisation prevents chromium carbide precipitation in heat-affected zones. Post-weld annealing isn’t required for most sheet thicknesses. Common welding methods include submerged arc welding and laser beam welding.
What is the maximum service temperature for 347 SS sheet?
347 stainless steel sheet can handle continuous service up to approximately 870°C (1600°F). Intermittent service at higher temperatures is also possible. The niobium content maintains structural integrity and resists grain boundary sensitisation during thermal cycling.
Where can I buy 347 stainless steel sheet in India?
Nandini Steel is a reliable 347 stainless steel sheet supplier in Mumbai, India. We offer ASTM A240 / ASME SA-240 compliant SS 347 sheet in a variety of diameters and finishes, complete with mill test certifications and low prices.
What is the current price of 347 stainless steel sheet?
In India, the price of 347 stainless steel sheet ranges from ₹250 to ₹431 per kilogram, while in the USA, it costs around $3.00 to $5.20. The final costs are based upon the overall order volume, sheet thickness, and surface polish. Market fluctuations and individual dimensional requirements continue to influence global pricing.
Contact us for any information, quotation & questions
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