High-Temp Stainless Steel 90 Degree Elbow | 5" Exhaust Solutions

High-Temp Stainless Steel 90 Degree Elbow | 5" Exhaust Solutions

Product Specifications

Property	Elbow Stainless Steel 304 (ASME B16.9)	Long Radius Stainless Steel Elbow (DIN 2605)
Material Grades	304, 304L, 316L, 321	304, 316L, Duplex 2205
Size Range	½"–24" (DN15–DN600)	½"–48" (DN15–DN1200)
Wall Thickness	SCH5S–SCH160	SCH10–XXS
Radius	1.5D (Long Radius)	1D (Short Radius)
Surface Finish	Mirror Polished, Pickled, Sandblasted	Electro-polished (Ra ≤0.4 μm)
Hardness (HV)	≤187 HBW	≤200 HBW
Pressure Rating	150–3000 PSI	150–6000 PSI
Operating Temp	-196°C to 900°C	-50°C to 550°C

Mechanical Properties

Tensile Strength

Our elbow stainless steel 304 delivers a minimum tensile strength of 520–620 MPa and yield strength of ≥205 MPa, making it ideal for high-stress exhaust systems and industrial pipelines. The austenitic structure, enhanced by 18–20% chromium and 8–10.5% nickel, ensures resistance to oxidation and thermal fatigue even in extreme environments like automotive exhausts or chemical processing plants.

Bending Strength

With ≥35% elongation in annealed conditions, these elbows withstand cold-forming processes like hydroforming and mandrel bending. The long radius stainless steel elbow maintains structural integrity under repetitive thermal cycling, reducing stress concentration in high-vibration applications such as marine exhausts or power plant piping.

Identification & Marking

Standard Markings: Laser-etched or stamped with grade (e.g., 304/316L), size (e.g., 5"), pressure rating, and heat number for full traceability.
Certifications: ASME B16.9, ISO 9001, and NACE MR-0175 for corrosion resistance.
Surface Codes: Polishing grades (180–420 grit) for hygienic or high-temperature applications.

Weight Calculation

Weight (kg) = [(OD – WT) × WT × OD × 0.02491] × 1.5 (90° factor)
Example: A 5" (127mm) OD × 3.76mm WT stainless steel 180 degree elbows weighs 10.15 kg (304L).

Why Stainless Steel Corrodes?

Despite its corrosion resistance, stainless steel elbows may rust under extreme conditions:

Chloride Exposure: Seawater, road salts, or industrial chemicals penetrate the chromium oxide layer, causing pitting corrosion.
Intergranular Corrosion: Prolonged exposure to 450–850°C triggers chromium carbide formation at grain boundaries, reducing corrosion resistance.
Galvanic Corrosion: Contact with dissimilar metals (e.g., carbon steel bolts) in humid environments accelerates electrochemical degradation.
Mechanical Damage: Scratches from improper tools or abrasive handling expose the base metal to oxidation.

Key Features & Applications

Material Advantages

High-Temp Stability: Retains strength up to 900°C, ideal for 5" exhaust solutions in automotive and marine engines.
Hygienic Design: Mirror-polished surfaces meet FDA standards for food processing or pharmaceutical pipelines.
Customization: Available as stainless steel 180 degree elbows for compact installations or complex routing.

Processing Techniques

Process	Description
Mandrel Forming	Ensures uniform wall thickness (±0.05mm) for high-pressure integrity.
Solution Annealing	Restores corrosion resistance by dissolving carbides at 1050–1100°C.
Electropolishing	Reduces surface roughness to Ra <0.4 μm for low-friction fluid flow.

Why Choose Our Stainless Steel Elbows?

Certified Excellence: ASME B16.9, ISO 9001, and NACE MR-0175 compliance for reliability in corrosive environments.
Global Inventory: 50,000+ units in stock for rapid delivery across 30+ countries.
Custom Solutions: Tailored angles (45°–180°), threading (NPT, BSPT), and coatings (PVD black ion-plated).
Technical Support: 24/7 guidance on welding, pressure testing, and corrosion prevention.
Sustainability: 100% recyclable material with eco-friendly production processes.

High-Temp Stainless Steel 90 Degree Elbow | 5" Exhaust Solutions