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Stainless Steel Product Supplier In India

Infinity Steel Industries LLP is a leading manufacturer and supplier of premium-quality Stainless Steel Pipes & Tubes, Plates & Sheets, Bars & Rods, Flanges, Fasteners, and Fittings. We deliver precision-engineered products designed for exceptional strength, durability, and corrosion resistance. Our stainless steel materials meet global standards such as ASTM, ASME, and ANSI, ensuring reliability across diverse industries including oil & gas, petrochemical, power generation, marine, and construction sectors. Quality, performance, and customer satisfaction define our commitment.

Stainless Steel Composition

Stainless steel is an alloy primarily composed of iron and chromium, with other elements added to enhance its properties. The table below outlines the typical chemical composition ranges for the main grades of stainless steel.

Grade Type & Composition

Grade Type Chromium (Cr) Nickel (Ni) Molybdenum (Mo) Other Key Elements
Austenitic 16% - 20% 7% - 13% Varies Carbon, Manganese
Ferritic 10.5% - 17% - - Low Carbon
Martensitic 12% - 15% - 0.2% - 1% Carbon (controlled), Nitrogen
Duplex 21% - 26% 3.5% - 6.5% Varies Nitrogen

Stainless Steel Grades

Stainless steel is classified into different grades based on its chemical composition and crystalline structure:

  • Austenitic (300 series): Includes grades like 304 and 316. Non-magnetic, highly formable, weldable, used in kitchenware, architecture.
  • Ferritic (400 series): Magnetic, chromium-based, used in automotive exhaust systems and appliances.
  • Martensitic (400 series): Known for hardness and strength, magnetic, heat-treatable, used in cutlery and surgical tools.
  • Duplex: Mixed microstructure, higher strength, resistance to stress corrosion cracking, used in offshore platforms and chemical plants.

Stainless Steel Products HSN Code (India)

HSN Code Description
7218Stainless steel in ingots or other primary forms
7219, 7220Flat-rolled products (sheets, plates, coils)
7222Bars and rods of stainless steel
7304, 7306Tubes, pipes, and hollow profiles
7307Tube or pipe fittings

Applications of Stainless Steel

  • Food & Beverage: Kitchenware, food processing, storage tanks.
  • Automotive: Exhaust systems, trim, structural components.
  • Medical: Surgical instruments, implants, hospital equipment.
  • Construction & Architecture: Cladding, handrails, structural supports.
  • Chemical & Petrochemical: Pipelines, reactors, storage vessels.
  • Marine: Hardware and fittings resistant to saltwater corrosion.

Stainless Steel Price Factors

  • Grade & Composition: Higher-grade alloys cost more due to nickel and molybdenum.
  • Product Form & Size: Price per kilogram varies by product type.
  • Market Conditions: Demand, raw material prices, currency fluctuations.
Frequently Asked Questions (FAQ)
Stainless steel is an iron-based alloy containing a minimum of 10.5% chromium. The chromium reacts with oxygen to form a thin, invisible passive layer on the surface that resists rust and staining — which is why it's called "stainless."
SS 304 is the most common grade with good corrosion resistance for general use. SS 316 contains 2–3% molybdenum, which provides superior resistance to chlorides and harsh chemicals, making it ideal for marine, pharmaceutical, and chemical processing environments.
Grade 304 and 316 are both widely used in food processing. SS 316 is preferred where cleaning agents or saline environments are involved, while SS 304 is suitable for standard food contact applications like tanks, conveyors, and kitchen equipment.
It depends on the grade. Austenitic grades (304, 316) are generally non-magnetic in their annealed state. Ferritic and martensitic grades are magnetic. Duplex stainless steel is also slightly magnetic due to its mixed microstructure.
Stainless steel is used across oil & gas, petrochemical, pharmaceutical, food & beverage, marine, construction, power generation, and medical industries — valued for its strength, hygiene, and corrosion resistance.
Our stainless steel products conform to international standards including ASTM, ASME, ANSI, DIN, and EN. Each product is tested and certified to ensure dimensional accuracy, mechanical properties, and chemical composition compliance.

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