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Stainless Steel Plates for Chemical Processing Industry

Stainless steel plates play a mission-critical role in the chemical processing industry, where materials are constantly exposed to corrosive media like acids, alkalis, chlorides, and high temperatures. At Hindustan Steel Corporation, we supply premium-grade stainless steel plates engineered for resistance to pitting, stress corrosion cracking (SCC), intergranular corrosion, and oxidation. Whether it’s a pharmaceutical reactor, sulfuric acid tank, or chlorine-based plant equipment, our stainless steel plate solutions help ensure long-term plant uptime and safety.

Our portfolio includes SS 304, 316L, 317L, 321, 904L, Duplex & Super Duplex Plates, tailored to match the rigorous demands of each chemical environment. All plates are mill-certified, traceable, and ready for fabrication into heat exchangers, storage vessels, evaporators, and pipelines.

What Is the Role of SS Plates in Chemical Plants & Processing Units?

Stainless steel plates serve as the structural and corrosion-resistant backbone of modern chemical plants. From reactor linings to filter housings, distillation columns, and acid recovery tanks, stainless steel offers a unique blend of mechanical strength, non-contaminating surface, and resistance to chemical attack.

In particular, grades like 316L and 904L are chosen for high-chloride or acidic services, while Duplex (UNS S31803/S32205) and Super Duplex (S32750/S32760) are trusted for aggressive media involving ferric chlorides, brines, and seawater-derived chemicals. These grades outperform carbon steel and basic SS 304 in both lifecycle and safety.

Applications of Stainless Steel in Acids, Alkalis & Harsh Chemical Environments

Our stainless steel plates are widely used in:

  • Sulfuric Acid Storage Tanks (SS 904L, SS 316Ti)
  • Nitric Acid Vessels (SS 304L, 316L)
  • Hydrochloric Acid Equipment (Duplex, Super Duplex)
  • Caustic Soda Systems (SS 304, 316)
  • Evaporators, Dryers & Agitators
  • Scrubbers & Chimney Liners
  • Filter Press & Piping Components
  • Mixing & Separation Columns
  • Lined Pressure Vessels and Towers

Each application demands careful grade selection to prevent metal loss, leakage, and unexpected downtime.

Grade Performance, Corrosion Resistance & Mechanical Properties in Chemical Use

Grade Key Features in Chemical Industry
SS 304/304L Basic corrosion resistance, good for mild acids and alkaline environments
SS 316/316L Enhanced resistance to chlorides, sulfates, acids
SS 317L Higher molybdenum for harsh chemical services
SS 321/347 Stabilized grades for resistance to intergranular corrosion
SS 904L High corrosion resistance in sulfuric, phosphoric, and acetic acid
Duplex S31803/S32205 Dual-phase strength, excellent SCC and pitting resistance
Super Duplex S32750/S32760 High-pressure chemical handling, seawater compatibility, high PREN values

These plates offer yield strengths up to 550 MPa, tensile strengths above 700 MPa, and elongation between 25–40%, depending on grade and thickness.

Chemical Compatibility & Material Selection Guide

Chemical engineers and buyers must match material to chemical exposure. Here’s a simplified guideline:

Chemical Type Recommended SS Grade
Sulfuric Acid (<70%) SS 904L, SS 316L
Nitric Acid SS 304L, SS 316L
Hydrochloric Acid (Dilute) Duplex, Super Duplex
Caustic Soda (NaOH) SS 304, SS 316
Organic Acids & Alcohols SS 316L, SS 317L
Bromides, Chlorides Duplex, Super Duplex, 904L

Need help selecting the right material for your chemical process? Speak with our in-house experts or request a custom datasheet tailored to your application.

Technical Standards & Equivalent Grades for Chemical Use

Our stainless-steel plates conform to global and Indian standards required for chemical processing and pressure-bearing applications:

Standard Common Grades Equivalent / Notes
ASTM A240 / ASME SA240 SS 304, 316L, 317L, 321, 347, 904L Widely used in chemical equipment and pressure vessels
EN 10088-2 1.4301, 1.4404, 1.4539, 1.4462 European standards for corrosion-resistant stainless
IS 6911 / IS 5522 SS 304, 316 Indian stainless specifications for chemical-grade steel
NACE MR0175 / ISO 15156 Duplex, Super Duplex H2S service in sour chemical and petrochemical environments

Thickness Range & Plate Sizes Available

We supply stainless steel plates in a wide range of sizes and dimensions to meet the diverse requirements of chemical plants and fabricators:

  1. Thickness: 3 mm to 100 mm+
  2. Width: 1250 mm / 1500 mm / 2000 mm / 2500 mm (custom cut)
  3. Length: Up to 6000 mm or coil form
  4. Cut Shapes: Rectangular plates, CNC profiles, circle blanks, ring shapes
  5. Finish: No.1 (HRAP), 2B, BA, Polished (Dull/Glossy), Pickled

Custom shearing, plasma cutting, waterjet, and edge prep services are available upon request.

Heat Treatment, Toughness & Surface Finish

Stainless steel plates for chemical processing are typically delivered in the annealed condition (solution annealed) to optimize corrosion resistance, ductility, and weldability.

Grade Heat Treatment Process Service Benefit
SS 316L / 317L Solution annealed Improves resistance to pitting and stress corrosion
SS 904L Solution annealed + pickled Removes embedded iron particles post-rolling
Duplex & Super Duplex Water quenched after annealing Improves phase balance, impact toughness

We ensure all plates are free from scale, embedded impurities, and meet the surface cleanliness required for high-purity chemical systems.

Machining & Fabrication Advice for Chemical Plants

Machining and fabricating stainless steel for the chemical sector requires care:

  • SS 316L, 317L, 904L: Weldable with standard TIG/MIG methods. Use low-heat input for thinner sections.
  • Duplex / Super Duplex: Require preheat/post-weld treatment for thick sections. Use compatible electrodes.
  • Avoid carbon contamination: Ensure clean tools and dedicated workstations.
  • Pickling and passivation: Mandatory after fabrication to restore corrosion resistance.

Our technical team provides fabrication support, including bending charts, welding consumable selection, and post-weld testing guides.

Why Buy from Hindustan Steel Corporation?

We are not just plate stockists — we are trusted suppliers to India’s top chemical manufacturers and EPC contractors. Here’s why chemical plant buyers choose us:

  • Full traceability from mill to project site
  • Duplex & 904L grades always in ready stock
  • Third-party inspection & test reports (TPI / NABL)
  • Cut-to-size services for tanks, filters, and vessels
  • Export-ready packaging and delivery support
  • Application-based grade selection & cost optimization

From phosphoric acid plants in Gujarat to bulk drug manufacturing in Hyderabad, we supply high-purity stainless plates tailored to every chemical stream.

Export Destinations & Packaging for Chemical Industry Steel

Hindustan Steel Corporation is a trusted exporter of chemical-grade stainless steel plates to 40+ countries, with major shipments going to:

Export Regions:

  • Middle East: UAE, Saudi Arabia, Oman, Qatar
  • Southeast Asia: Vietnam, Thailand, Malaysia, Indonesia
  • Africa: Egypt, Kenya, Nigeria
  • Europe: Germany, Spain, Italy (EN 1.4404 / 1.4539 compliant)
  • North America: USA, Mexico, Canada (ASTM A240/ASME SA240)

Export Packaging Includes:

  • Plastic-wrapped & interleaved sheets
  • Heat number–stamped bundles with MTC
  • Wooden pallet or crate packing
  • Seaworthy, corrosion-proof wrapping
  • Containerized loading with GPS dispatch updates

All shipments include test certificates, export documentation, and customs-compliant markings.

Buyer Guide: Selecting the Right SS Plate for Chemicals

Chemical processing requires precise grade selection. Use this simplified guide:

Environment Recommended Grade
Acids (HCl, H₂SO₄) SS 904L, 317L, Super Duplex
Chlorides / Salts SS 316L, Duplex (S32205)
Organic solvents SS 304, 316, 321
High pressure & steam SS 321, 347, SA240
Strong oxidizers SS 317L, 904L
Sour gas (H₂S) Duplex / Super Duplex with NACE compliance

Tip: Always consult with our technical team for corrosive media compatibility before ordering. We provide sample MTCs, case studies, and test reports on request.

Certifications, Approvals & Test Reports

We maintain full documentation and testing support for chemical plate buyers:

  • ASTM A240 / ASME SA240
  • IBR Approved for high-pressure systems
  • PED 2014/68/EU compliance for Europe
  • NACE MR0175 for H₂S environments
  • EN 10088-2 / ISO 15156 for international compatibility
  • Lab-tested for pitting, crevice, and intergranular corrosion

Available Testing: PMI, IGC, HIC, Flattening, Bending, UT, Impact Testing (CVN), and Third-Party Inspection.

FAQs for Chemical Processing Industry

SS 304 can be used in non-aggressive chemicals but is not suitable for chloride or acidic environments.

SS 904L or Super Duplex (UNS S32750) is ideal for storing acids like sulfuric and phosphoric acid.

Yes, Duplex grades offer good resistance to organic chemicals and provide higher strength.

SS 904L has excellent sulfuric acid resistance, especially in dilute to medium concentrations.

3 mm to 100 mm+ depending on the tank, pipe, or equipment design.

Yes, we offer IBR-certified stainless steel plates for chemical pressure vessels.

SS 316 is better than SS 304, but Duplex or Super Duplex is preferred in high-chloride environments.

Yes, all our chemical-grade plates are delivered in cleaned, scale-free condition

Tensile strength: ~490 MPa, Yield: ~220 MPa, Elongation: 35%, Hardness: ≤ 90 HRB

Yes, we offer precision cut profiles for tank bottoms, flanges, and shells.

ASTM A240, ASME SA240, EN 10088-2, NACE MR0175 depending on requirement.

SS 316L and SS 317L perform well in nitric acid environments; consult for concentration range.

SS 316L, 317L, 904L, and Duplex S32205 are commonly used in agrochemical and fertilizer industries.

Ready stock: 3–5 days. Custom cut & export pack: 7–10 days depending on port and grade.

Call to Action: Request SS Plates for Your Chemical Plant

Looking for corrosion-proof stainless steel plates for your chemical unit, reaction vessel, or acid storage tank?

  • Instant pricing based on size & grade
  • Free MTC sample and cut-to-size support
  • Stock availability and delivery timeline
  • Export documentation or domestic dispatch planning

Let Hindustan Steel Corporation support your next chemical processing project with trusted steel and technical confidence.

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+91-22-66159018
+91-9820944724

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sales@hindustansteel.com hindustansteel1@gmail.com

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