Sihe Steel
Sihe Steel
High-grade metallic solutions selected for immediate delivery and custom adaptation to Romanian industrial guidelines.
Premium grade 409 polished sheet. Ideal for exhaust decoration, structural auto frames, and heat baffles in the Romanian manufacturing sector.
View Details / Get Quote
Thick-gauge hot rolled plates offering superior high-temperature oxidation resistance, designed for heavy automotive exhaust manifolds.
View Details / Get Quote
High-end molybdenum-alloyed steel sheet providing premium pitting and crevice corrosion resistance in marine and industrial acid processes.
View Details / Get Quote
Extremely close tolerance capillary and precision tubing, tailored for industrial hydraulic networks and instrumentation lines.
View Details / Get QuoteGrade 409 (UNS S40900) is a titanium-stabilized ferritic stainless steel specifically developed to withstand high temperatures and mildly corrosive atmospheres. As a cost-effective alternative to chromium-nickel austenitic grades (such as 304 or 316), 409 provides exceptional resistance to exhaust gases and atmospheric corrosion, making it the industry standard for thermal exhaust components, catalytic converter casings, and agricultural silos.
The metallurgy of 409 stainless steel is dominated by a ferritic structure that remains stable at elevated temperatures. By adding titanium as a stabilizing agent, we prevent sensitization—a phenomenon where chromium carbides form at the grain boundaries, which typically triggers intergranular corrosion. This makes the alloy highly weldable and suitable for localized deep drawing, stamping, and tube forming without micro-cracking.
For buyers and engineers in Romania, choosing the right supplier of ASTM A240 / EN 10088-2 Grade 409 sheet material requires verifying the stabilization ratio and testing protocols. At Liaocheng Sihe Stainless Steel, we perform 100% material tracking and supply comprehensive EN 10204 3.1 Mill Test Certificates (MTC) detailing mechanical properties, chemical heat analysis, and stabilization elements.
| Element / Property | Grade 409 (UNS S40900) | Yield Strength (0.2% MPa) | Tensile Strength (MPa) | Elongation (% in 50mm) | Hardness (HRB Max) |
|---|---|---|---|---|---|
| C (Carbon) | 0.08% max | ≥ 170 MPa | ≥ 380 MPa | ≥ 20% | 88 HRB |
| Cr (Chromium) | 10.5% – 11.75% | ||||
| Ti (Titanium) | [6 x (C + N)] to 0.75% | ||||
| Ni (Nickel) | 0.50% max | ||||
| Mn (Manganese) | 1.00% max | ||||
| P & S | P: 0.04% max / S: 0.03% max |
Romania has rapidly developed into one of Central and Eastern Europe's primary hubs for automotive assembly, industrial equipment fabrication, and green energy deployment. Industrial zones spanning from Pitești (Mioveni) and Craiova to technological clusters in Cluj-Napoca and logistics centers near Constanța Port demand robust supply chains for high-performance raw materials.
Romania's prominent automotive tier-1 and tier-2 parts manufacturers require reliable deliveries of 409 sheets for catalytic converters, muffler shells, and cold-end exhaust pipes. Titanium stabilization ensures structural stability over prolonged heat stress.
Local heat exchanger factories and boiler fabricators in regions like Ploiești use 409 sheets and plates as thermal shields. They offer a highly cost-efficient replacement for higher alloys while handling heat cycles up to 815°C.
Modernization of silos and processing hubs in southern Romania demands corrosion protection against organic acids and damp agricultural environments. Grade 409 plates deliver the needed mechanical abrasion resistance.
Furthermore, with the European Union's Carbon Border Adjustment Mechanism (CBAM) coming into effect, industrial manufacturers in Romania must partner with steel factories that utilize highly optimized heating loops, advanced bright annealing lines, and documentable low-scrap production models. Our state-of-the-art facilities directly address these documentation and process quality needs.
Based in China and operating with six advanced production lines, Liaocheng Sihe Stainless Steel Material LTD is a leading manufacturer specializing in stainless steel sheet and plate products, coiled tubing, polishing tubes, and seamless coiled tubing.
We adhere strictly to international manufacturing standards including GB, ASTM, ASME, JIS, and EN. Our material catalog features an extensive selection of premium grades: 304/304L, 316L, 321, 317L, 309S, 310S, and INCOLOY 800, alongside austenitic steels, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625.
Our specialized products are highly popular in demanding fields: military applications, semiconductor fabrication, pharmaceutical biotechnology, precision instruments, hydraulic parts, petrochemical plants, boilers & heat exchangers, aerospace structures, automotive exhaust lines, marine shipbuilding, solar installations, and high-capacity water heaters.
With our advanced bright annealing technology, we perform online heat treatment processes to optimize microstructures. We execute comprehensive post-production inspections including flaring, flattening, hardness, tension, and 100% hydrostatic and pneumatic leak testing to guarantee zero-defect shipments.
From raw sheets to semi-fabricated components, we supply customized services tailored to complex Romanian engineering prints.
Supports various materials (e.g., 304, 316L, 2205) and custom dimensions. We maintain coiled tubing options from 6.35mm to 19mm OD to fit high-temperature heat exchangers perfectly.
Includes advanced tube bending, spiral-wound forming, and high-precision drawing. Optimized for heat exchanger tube bundles, condenser systems, and custom industrial manifolds.
We run high-power fiber laser cutting, mechanical shearing, and flame cutting. Get clean edges, tight dimensional tolerances, and perfectly flat plates ready for robotic welding cells.
We focus on developing new product options with state-of-the-art bright annealing, pickling, mechanical brushing, and high-gloss mirror polishing for aesthetic projects.
Discover how our products are integrated into essential sectors across Romania and globally.
Every shipment undergoes extensive technical inspection to guarantee full compliance with European EN standards.
Our manufacturing facility operates under international quality system frameworks. Every batch of 409 stainless steel sheets, plates, and tubes is subjected to strict mechanical and physical testing:
Detailed answers to direct engineering queries, order procedures, and localized logistics for Romania.
Explore our complete catalog of materials, from premium Grade 409 sheets to high-temperature exchanger tubes.
High-grade 304 seamless and welded heat exchanger tubes, designed to handle high pressures and temperatures.
View Details / Get Quote
Polished surface finish 409 sheets, ideal for architectural trim, exhaust systems, and general metal fabrication.
View Details / Get Quote
High-precision tubes produced in compliance with JIS and DIN standards, offering precise dimensional control.
View Details / Get Quote
Ultra-thin capillary lines for instrumentation, sensor housings, and micro-fluidic systems.
View Details / Get Quote
Corrosion-resistant welded pipes tailored for petrochemical fluid transport and municipal wastewater plants.
View Details / Get Quote
Standard 1220x2440mm sheets with 1-3mm thickness, suited for structural panels and machine guards.
View Details / Get Quote
High-precision drawing capillary tubes, built for high-pressure control lines and sensor probes.
View Details / Get Quote
Highly weldable ferritic steel pipes, engineered for engine exhaust systems and high-temperature manifolds.
View Details / Get Quote
German standard compliant 316 welded pipes, providing chemical corrosion resistance.
View Details / Get Quote
Precision-drawn capillary tubing coils with custom dimensions to fit specialized machinery.
View Details / Get Quote
Super Duplex steel tubing built for extreme offshore environments, oil/gas wells, and deep-sea systems.
View Details / Get Quote
High-quality 304 grade coiled tubes, engineered to handle pressure in industrial heat exchangers.
View Details / Get QuoteGet in touch with our engineering team today to request structural material calculations, custom dimension sheets, or physical samples. We provide global delivery options to Constanța and other major ports.