Ferritic Steel

Ferritic stainless steel features a body-centered cubic (BCC) crystal structure with 10.5-30% chromium and low carbon (<0.1-0.2%), minimal nickel, and often stabilizers like titanium or niobium, making it magnetic, cost-effective, and resistant to chloride stress corrosion cracking compared to austenitic grades. It offers good oxidation resistance up to 800-870°C, excellent thermal conductivity (16-25 W/m·K), low thermal expansion, and moderate corrosion protection in mild environments via a passive chromium oxide layer, though weldability requires care to avoid sensitization

Factory Generated Scrap

Sheet & plate factory rejections, prime offcuts ,Pre-cut sheets, standard half-size lots, Cuttings, punchings, small pieces.

Heavy Melting Scrap

Large thick cuttings, industrial heavy lots, Industrial scrap like burnt (e.g., oxidized cast iron from stoves/grates) or painted steel.

Turnings/Borings

Machining byproducts (e.g., from turning, milling, drilling) in forms like loose, bundled, or crushed chips, generated during production

SS 409

Features:

Durable ferritic stainless steel with excellent heat and oxidation resistance
Ideal for automotive exhausts and high-temperature industrial applications
Cost-effective with good corrosion resistance and easy weldability

Applications:
Primarily automotive exhaust parts, catalytic converters, mufflers, industrial furnace components, heat exchangers, and applications requiring moderate corrosion resistance and high-temperature strength.

Heat Treatment:

Annealing at 790-900°C, air cool. Cannot be hardened by thermal treatment. Post-weld annealing improves weld ductility.
Welding: Preheat 150-260°C recommended. Austenitic filler rods improve weld ductility. Automotive exhaust tubing often welded autogenously.

Stainless Steel 409 is a versatile ferritic stainless steel known for its excellent heat and oxidation resistance, making it ideal for high-temperature applications such as automotive exhaust systems and industrial furnaces. It offers moderate corrosion resistance suitable for mild environments and is highly cost-effective due to its low nickel content. With good weldability and formability, SS 409 is widely used in industries like automotive, construction, and manufacturing where durability and affordability are essential.

Chromium (Cr): 10.5% - 11.75%

Carbon (C): Maximum 0.08%

Manganese (Mn): 1.00%

Silicon (Si): Max 1.00%

Titanium (Ti): 0.30%-0.60%

Phosphorus (P): Max 0.04%

Sulfur (S): Maximum 0.03%

Iron (Fe): 87-89%

Automotive: Exhaust systems, mufflers, catalytic converters, and heat shields due to its high heat and oxidation resistance.

Industrial Manufacturing: Employed in heat exchangers, furnace components, boilers, and piping systems that require durability at elevated temperatures.

Construction: Applied in roofing, cladding, wall panels, and HVAC components for its corrosion resistance and structural strength.

Chemical and Petrochemical: Utilized for tanks, pipes, and reactors handling moderate corrosive environments.

Power Generation: Boilers, turbine exhausts, and pollution control equipment due to its heat resistance.

Appliance Industry: Manufacturing household appliances like dryers, ovens, and refrigerators.

SS 430

Features:

Ferritic, magnetic stainless steel with good corrosion resistance, especially to nitric acid and organic acids
Good oxidation resistance in intermittent service up to 870°C and continuous service up to 815°C
Good formability and ductility, non-hardenable by heat treatment

Applications:
Heat exchangers and pumps, consumer goods such as cookware and fasteners, and food processing equipment due to its good corrosion resistance, heat tolerance, and cost-effectiveness.

Heat Treatment:
Annealed by heating uniformly to 790–845°C (1450–1550°F), holding at this temperature to relieve internal stresses, then furnace or air cooled. It is not hardenable by heat treatment but can undergo stress relief annealing. Normalizing is performed at 845–955°C (1550–1750°F) with air cooling.

Stainless steel 430 is a ferritic, non-hardenable chromium stainless steel known for its good corrosion resistance, excellent formability, and ductility. It typically contains 16-18% chromium, which provides good resistance to oxidizing environments, including nitric acid. This grade offers moderate strength and hardness, good thermal conductivity, and magnetic properties. Commonly used in kitchen appliances, automotive trim, architectural panels, and industrial equipment, 430 stainless steel is valued for its affordability, durability, and resistance to heat and corrosion in mild environments. It is also widely applied in chemical processing equipment due to its excellent resistance to nitric acid.

Chromium (Cr): 16% – 18%

Carbon (C): Max 0.12%

Manganese (Mn): 1.00%

Silicon (Si): Max 1.00%

Titanium (Ti): 0.30%-0.60%

Phosphorus (P): Max 0.04%

Sulfur (S): Max 0.03%

Iron (Fe): 81%-83%

Kitchen and household: Sinks, dishwashers, stoves, and refrigerator panels.

Automotive: Exhaust systems, mufflers, catalytic converters, and decorative trim.

Architectural: Cladding, roofing, door frames, and handrails.

Industrial equipment: Heat exchangers, pumps, valves, and chemical processing units.

Consumer goods: Cookware, cutlery, fasteners, and bathroom fixtures.

Medical: Surgical instruments and dental tools

SS 441

Features:

Grade 441 stainless steel offers excellent corrosion and oxidation resistance, maintains high strength at elevated temperatures, provides good formability, ductility, and weldability due to its titanium and niobium stabilization

Applications:
Automotive exhaust manifolds and systems, heat exchangers, appliance housings, architectural trim, and industrial equipment that require durability, high-temperature performance, and resistance to scaling

Heat Treatment:
Annealing at 850–950 °C followed by rapid cooling relieves stress and enhances ductility and corrosion resistance in 441 stainless steel.

441 stainless steel is a dual-stabilized ferritic alloy renowned for its high heat and corrosion resistance, making it ideal for demanding automotive exhaust systems, home appliances, and architectural applications; its enhanced strength and ductility, along with excellent formability and weldability, ensure reliable performance and durability across industrial environments.

Chromium (Cr): 17.5 – 18.5%

Silicon (Si): ≤ 1.00%

Carbon (C): ≤ 0.03%

Manganese (Mn): ≤ 1.00%

Niobium (Nb): (3 × C + 0.30) to 1.00%

Sulfur (S): ≤ 0.015%

Titanium (Ti): 0.10 – 0.60%

Iron (Fe): 75-80%

Automotive exhaust systems: Manifolds and catalytic converters, benefiting from high-temperature strength and corrosion resistance

Architectural applications: Cladding, roofing, and elevator interiors, where durability and aesthetic appeal are important

Heat exchangers and furnace components requiring high oxidation resistance at elevated temperatures

Food processing equipment: Storage containers and kitchen appliances for corrosion resistance and hygiene

Rail and road vehicle parts: Strength and resistance to environmental exposure

Electronic components: Magnetic properties combined with durability

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