HRS Ferritic · 347/347H Stainless Steel Coils Exporter, Supplier, & Stockist
347/347H Stainless Steel Coils
AISI 347/347H Coils
Excellent resistance to high-temperature oxidation and scaling · Superior strength and durability in high-stress applications · Resistance to intergranular corrosion in welded joints · Good weldability and formability
ASTM A240 / AISI 347/347H
UNS S34700 / S34709
EN 1.4550 / 1.4961
SUS 347 / 347H
📋 Table of Contents
HRS Ferritic · Trusted Global Supplier
What are 347/347H Stainless Steel Coils?
HRS Ferritic is a leading and trusted 347/347H stainless steel Coils Supplier, 347/347H stainless steel Coils Stockist, and 347/347H stainless steel Coils Importer in India, offering high-quality coils sourced from valuable and globally certified manufacturers. With a strong commitment to delivering durable and corrosion-resistant products, we ensure that all coils meet international quality standards. As a reliable 347/347H stainless steel Coils Stockist, the company provides ready stock and customized solutions tailored to meet the needs of diverse industries.
347/347H stainless steel coils are austenitic stainless steels designed for high-temperature applications. Grade 347 is stabilized with niobium (columbium), which prevents carbide precipitation during welding. On the other hand, 347H has a higher carbon content, which improves high-temperature strength, making it ideal for applications in high-stress environments. These coils offer excellent resistance to oxidation and corrosion, especially in environments subject to thermal cycling. 347 and 347H stainless steel coils are used extensively in industries where performance under high temperature and stress is critical, such as in the chemical, oil and gas, and power generation sectors.
- Excellent resistance to high-temperature oxidation and scaling
- Superior strength and durability in high-stress applications
- Resistance to intergranular corrosion in welded joints
- Good weldability and formability
- Long service life in extreme environments
- Ideal for use in power generation, aerospace, and chemical industries
HighHeat Proof
Working Mechanism
How 347/347H Coil Works
347/347H stainless steel coils function through a chemical process where the high chromium content allows the formation of a protective oxide layer on the material’s surface. This passive oxide layer significantly reduces corrosion and prevents further oxidation when exposed to high temperatures and oxygen. The niobium stabilization in 347 ensures that the material maintains its strength and resistance to high-temperature oxidation and carbide precipitation, even in severe environments. The higher carbon content in 347H enhances its ability to resist scaling and oxidation at elevated temperatures, providing superior mechanical properties under thermal cycling conditions.
17-19%
Chromium Content
9-13%
Nickel Content
≥ 515
Tensile MPa
0.5-100
Thickness (mm)
Composition Analysis
Metallurgical Characteristics of 347/347H Stainless Steel Coils
Key alloying elements that contribute to the high-temperature stability and strength of the 347/347H austenitic structure.
Cr
Chromium
Provides resistance to oxidation and corrosion.
Ni
Nickel
Enhances toughness and ductility.
Nb
Niobium
Stabilizes the alloy and prevents carbide precipitation.
C
Carbon
Increases high-temperature strength in 347H.
Fe
Iron
Provides the base structure of the alloy.
Mn
Manganese
Improves workability and strength.
Technical Data
Specifications for 347/347H Stainless Steel Coils
ASTM A240 · ASME SA240 · UNS S34700 / S34709 · EN 1.4550 / 1.4961
| Specification | Details |
|---|---|
| ASTM / ASME | ASTM A240 / ASME SA240 (Plate, Sheet, Strip, and Coils) |
| UNS | UNS S31703 |
| EN | 1.4438 or X2CrNiMo17-12-3 |
| DIN | 1.4438 or X2CrNiMo17-12-3 |
| ISO | X2CrNiMo17-12-3 |
| JIS | SUS 317L |
| Product Form | Coils / Sheets / Plates |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000 mm, 1219 mm, 1250 mm, 1500 mm, 1800 mm, 2000 mm, 2500mm, 3000mm, 3500mm, etc |
| Standard Lengths | 2000 mm, 2440 mm, 2500 mm, 3000 mm, 5800 mm, 6000mm, etc |
| Custom Width Cut | Available as per customer requirement |
| Custom Length Cut | Available as per customer requirement |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled (AP) |
| Supply Condition | Solution Annealed |
| Cutting Methods | Plasma, Laser, Waterjet, Oxy Propane |
| Packaging | Bundled, Wooden Plates, Bubble wraps, Customized |
Inventory
Available Stock & Product Forms
Flat Products
Precision sheets, heavy plates, and shim sheets available in grade 347/347H.
Coils & Strips
Slitting coils, perforated coils, and thin foils from 0.05 mm thickness.
Speciality Forms
Circles, rings, custom-cut blanks, and chequered (tread) plates tailored for you.
Edge Types
Mill edge, slit edge, round edge, and square edge conditions available for supply.
Chromium (Cr)
17.0–19.0% — Crucial element for high-temp oxidation resistance.
Nickel (Ni)
9.0–13.0% — Enhances toughness and overall ductility of the coil.
Niobium (Nb)
Stabilized — Prevents carbide precipitation and maintains weld integrity.
Carbon (C)
0.04–0.10% (347H) — Higher carbon for improved high-temperature strength.
Tensile Strength
≥ 515 MPa — High ultimate strength for high-stress applications.
Yield Strength
≥ 205 MPa — Reliable yield point for industrial components.
Elongation
≥ 40% — Excellent ductility at break for complex fabrication.
Hardness
≤ 201 HB — Balanced hardness ensures durability and workability.
Product Range
Types of 347/347H Stainless Steel Coils
Available in multiple finishes and conditions for diverse engineering needs.
Hot Rolled Stainless Steel 347/347H Coils
Cold Rolled Stainless Steel 347/347H Coils
Polished Stainless Steel 347/347H Coils
Slit 347/347H SS Coils
Industrial Grade 347/347H SS Coils
Application Sectors
Industries We Serve
Sugar Industry
Global cane and beet processing requiring thermal endurance.
Power Industry
Electricity generation and distribution systems.
Ship Building
Marine propulsion and exhaust components.
Mechanical & Plant Engineering
Industrial machinery design solutions.
Food, Beverage & Dairy
Processed food manufacturing environments.
Oil & Gas Plant
Refinery furnace units and burner assemblies.
Chemical Composition
Chemical Details of 347/347H Stainless Steel Coils
Composition comparison between stabilized 347 and high-carbon 347H grades.
| Element | 347 SS | 347H SS |
|---|---|---|
| Carbon (C, %) | ≤ 0.08 % | 0.04 – 0.10 % |
| Chromium (Cr, %) | 17.0 – 19.0 % | 17.0 – 19.0 % |
| Nickel (Ni, %) | 9.0 – 13.0 % | 9.0 – 13.0 % |
| Manganese (Mn, %) | ≤ 2.00 % | ≤ 2.00 % |
| Silicon (Si, %) | ≤ 0.75 % | ≤ 0.75 % |
| Phosphorus (P, %) | ≤ 0.045 % | ≤ 0.045 % |
| Sulfur (S, %) | ≤ 0.03 % | ≤ 0.03 % |
| Columbium + Tantalum (Nb + Ta, %) | 10×C – 1.00 % max | 8×C – 1.00 % max |
| Iron (Fe, %) | Balance | Balance |
Performance Data
Mechanical Properties of 347/347H Stainless Steel Coils
≥ 515
Tensile Strength (Ultimate)
MPa (75 ksi) — High ultimate strength for high-stress applications
≥ 205
Yield Strength (0.2% offset)
MPa (30 ksi) — Reliable structural performance at elevated temperatures
≥ 40 %
Elongation at Break
Excellent ductility for fabrication and complex forming
≤ 201 HB
Brinell Hardness (HBW)
Optimal material hardness for high-temperature durability
190–210 GPa
Modulus of Elasticity
Strong mechanical stiffness for industrial thermal cycling
7.96 g/cm³
Density
Standard density for precision engineering calculations
Cost Information
Price List for 347/347H Stainless Steel Coils
Price Factors
What affects the 347/347H price?
- Raw material price fluctuations
- Coil thickness and width
- Surface finish requirements
- Market demand and supply dynamics
- Import duties and logistics costs
Get Pricing Today
Get A Quote!
Competitive rates · High quality · Global delivery
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International Standards
Equivalent Grades for 347/347H Stainless Steel Coils
Cross-reference table for international designations of 347/347H coils.
| Standard | 347 SS Equivalent | 347H SS Equivalent |
|---|---|---|
| UNS (USA) | S34700 | S34709 |
| ASTM / AISI (USA) | 347 | 347H |
| EN / DIN (Europe / Germany) | 1.4550 | 1.4961 |
| JIS (Japan) | SUS347 | SUS347H |
| GOST (Russia / CIS) | 08Ch18N12B | 08X18H12Б |
| GB (China) | 06Cr18Ni11Nb | 0Cr18Ni11Nb variant |
| ISO / International | X6CrNiNb18‑10 | X6CrNiNb18‑12 |
| WERKSTOFF Nr. | 1.4550 | 1.4961 |
| BS (British) | EN 1.4550 | EN 1.4961 |
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Ready Stock Availability
- Flat Products: Precision sheets, heavy plates, shim sheets
- Coils & Strips: Slitting coils, perforated coils, thin foils (from 0.05 mm)
- Speciality Forms: Circles, rings, custom-cut blanks, chequered (tread) plates
- Edge Conditions: Mill edge, slit edge, round edge, square edge
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Quality & Logistics
- Testing: PMI, Ultrasonic Testing (UT), Radiography (RT), corrosion testing
- Certification: EN 10204 3.1 / 3.2, NACE compliance (on request)
- Global Supply: USA, UAE, Saudi Arabia, Singapore, Indonesia, Europe
- Export Packaging: ISPM-15 fumigated wooden crates, shrink-wrapped & moisture-protected
Use Cases
Applications of 347/347H Stainless Steel Coils
✈️ Aerospace
Used in components exposed to high temperatures, such as turbine blades and exhaust systems.
⛽ Oil & Gas
Ideal for pipelines and heat exchangers in extreme conditions.
🌾 Fertilizer Industry
Resistant to chemical exposure, making it suitable for fertilizer production.
⚡ Electric & EV
Used in electrical components that require high strength and corrosion resistance.
🏗️ Construction
Used in building materials and structures subjected to high temperatures.
🧪 Chemical Processing
Perfect for reactors, distillation columns, and heat exchangers in chemical plants.
🚗 Automotive
Used in exhaust systems and other high-temperature components.
💊 Pharmaceuticals
Ensures hygienic and corrosion-resistant processing environments.
Why HRS Ferritic
Why Choose HRS Ferritic for 347/347H Coils?
HRS Ferritic is committed to providing premium stainless steel coils for high-performance applications. We are a specialized supplier delivering reliable and high-performance stainless steel products from certified global manufacturers.
Leading 347/347H stainless steel Coils Supplier in India
Trusted 347/347H stainless steel Coils Stockist
Reliable 347/347H stainless steel Coils Importer
Competitive pricing with unmatched quality
Fast delivery with global logistics capabilities
Customized solutions for industry requirements
Materials sourced from certified global mills
Comprehensive inventory of sizes and forms
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Cities We Supply In India
New Delhi · Ahmedabad · Jaipur · Surat · Salem · Gandhinagar · Varanasi · Haldia ·
Bhiwandi · Tiruppur · Jamnagar · Thiruvananthapuram · Rajahmundry · Visakhapatnam · Bhubaneswar ·
Vijaywada · Rajkot · Bharuch · Coimbatore · Nagpur · Raipur · Cochin · Ludhiana · Panipat · Durgapur ·
Agra · Indore · Kuala Lumpur · Al Jubail · Pimpri-Chinchwad · Sharjah · Karachi · Chandigarh · Bogota · Muscat · Madrid · Tehran · Granada · Jakarta · Los Angeles · Rio de Janeiro · Melbourne · Cairo · New York · Busan · Milan · Montreal · Singapore · Sydney · Dubai · Lagos · Gurgaon · Port-of-Spain · Hong Kong · Navi Mumbai · Secunderabad · Bangkok · Aberdeen · Bhopal · Atyrau · Caracas · Jamshedpur · Thane · Faridabad · Ahvaz · Ahmedabad · Hanoi · Bengaluru · Dallas · Moscow · Surat · Riyadh · Rajkot · Al Khobar · Hyderabad · Haryana · Ernakulam · Gimhae-si · Algiers · Thiruvananthapuram · Brisbane · Calgary · Mumbai · Chennai · Courbevoie · Toronto · Vung Tau · Ankara · Doha · Nagpur · Howrah · Ranchi · Perth · Noida · Houston · Kolkata · Chiyoda · Mexico City · Edmonton. Geoje-si · Abu Dhabi · Santiago · New Delhi · Colombo · Ludhiana · Lahore · Coimbatore · Ho Chi Minh City · Manama · Ulsan · London · Visakhapatnam · Jaipur · Kuwait City · Seoul · Istanbul · Pune · Baroda · Kanpur · La Victoria · Jeddah · Dammam · Petaling Jaya · Nashik · Vadodara ·jamnagar ·hazira · jubail industrial city · Ajman · Capetown · San Francisco · sao paulo · Barcelona · Ahmedi · Muscat · Madrid · Birmingham · Johannesburg.
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Countries We Export To
Saudi Arabia · Qatar · Canada · Sri Lanka · Iran · Nigeria · Bangladesh · Oman · UAE ·
Turkey · Kuwait · Venezuela · Africa · Singapore · Netherlands · United Kingdom · Mexico · Malaysia ·
United States · Australia · Japan Saudi Arabia · Iran · Iraq · UAE · Qatar · Bahrain · Oman · Kuwait · Turkey · Yemen · Syria · Jordan · Cyprus · Nigeria · Algeria · Angola · South Africa · Libya · Egypt · Sudan · Equatorial Guinea · The Republic Of Congo · Gabon · USA · Canada · Mexico · Panama · Costa Rica · Puerto Rica · Trinidad And Tobago · Jamaica · Bahamas · Denmark · Russia · Norway · Germany · France · Italy · Uk · Spain · Ukraine · Netherland · Belgium · Greece · Czech Republic · Portugal · Hungary · Albania · Austria · Switzerland · Slovakia · Finland · Ireland · Croatia · Slovenia · Malta · India · Singapore · Malaysia · Indonesia · Thailand · Vietnam · South Korea · Japan · Sri Lanka · Maldives · Bangladesh · Myanmar · Taiwan · Cambodia · Argentina · Bolivia · Brazil · Chile · Venezuela · Colombia · Ecuador · Guyana · Paraguay · Uruguay · New Zealand · Romania · Puerto Rico · Nepal · Kenya · Afghanistan · Lithuania · Belarus · Zimbabwe · Israel · Azerbaijan · Poland · Australia · Morocco · Philippines.
Support
Frequently Asked Questions
Quick answers to common queries about 347/347H Stainless Steel Coils.
Yes. Thicker coils use more raw material and often require additional manufacturing steps, which increases the cost for buyers from a 347/347H stainless steel coil supplier.
Larger coil dimensions demand more material and processing effort, which raises the price, especially for custom widths, diameters, or lengths provided by stainless steel coil stockists.
Premium finishes, such as polished or mirror finishes, involve extra processing and stringent quality checks, leading to higher overall costs from stainless steel coil suppliers.
Absolutely. Variations in the prices of key elements like chromium, nickel, and titanium directly impact the pricing offered by 347/347H stainless steel coil importers and distributors.
347H contains higher carbon content, which enhances its strength at elevated temperatures, making it ideal for critical applications in aerospace, chemical, and oil & gas industries.
Yes. These coils provide excellent corrosion and oxidation resistance, making them suitable for chemical processing and other harsh environments.
They are widely employed in high-temperature and demanding settings such as aerospace components, chemical processing equipment, and oil & gas infrastructure due to their durability and heat resistance.
Choosing coils from reputable, certified manufacturers ensures compliance with international standards, premium quality, and reliable performance over time.
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