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Durable Stainless Steel 90 Degree Elbow | Corrosion-Free Performance
Durable Stainless Steel 90 Degree Elbow | Corrosion-Free Performance
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Durable Stainless Steel 90 Degree Elbow | Corrosion-Free Performance
Product Overview
Our stainless steel 90 degree elbow (UNS S30400/S31600) is engineered for extreme durability and corrosion resistance, ideal for high-pressure industrial systems, marine applications, and HVAC installations. Compliant with ASME B16.9, ASTM A403, and DIN 2605 standards, this elbow ensures seamless fluid flow with a 90° directional change, minimizing turbulence and pressure drop. Available in stainless steel 90 degree elbow 1/2 to 48-inch sizes, it features customizable finishes and configurations for diverse piping needs.
Technical Specifications
1. Chemical Composition
| Element | 304 Grade (%) | 316 Grade (%) |
|---|---|---|
| Carbon (C) | ≤0.08 | ≤0.03 |
| Chromium (Cr) | 18.0–20.0 | 16.0–18.0 |
| Nickel (Ni) | 8.0–11.0 | 10.0–14.0 |
| Molybdenum (Mo) | – | 2.0–3.0 |
| Manganese (Mn) | ≤2.00 | ≤2.00 |
Certified to ASTM A240, EN 1.4301 (304), and EN 1.4401 (316).
2. Mechanical Properties
| Property | 304 Value | 316 Value |
|---|---|---|
| Tensile Strength | 485–620 MPa | 520–620 MPa |
| Yield Strength | ≥170 MPa | ≥210 MPa |
| Elongation (%) | ≥40 | ≥35 |
| Hardness (Brinell) | ≤187 HB | ≤217 HB |
| Pressure Rating | 150–6000 PSI | 150–6000 PSI |
3. Dimensions & Configurations
| Type | Radius (D) | Stainless Steel 90 Degree Elbow Dimensions (inches) | Wall Thickness (SCH) | Surface Finish |
|---|---|---|---|---|
| Long Radius (LR) | 1.5D | 1/2"–48" | 10S, 40S, 80S, XXS | 2B, Mirror, HL |
| Short Radius (SR) | 1.0D | 1/2"–24" | 5S, STD, XS | Sandblasted, Electro-Polished |
Custom stainless steel 90 elbow designs include threaded ends, sanitary finishes, and anti-slip textures.
4. Manufacturing Process
| Process | Description |
|---|---|
| Seamless Forging | Hot extrusion ensures uniform grain structure for high-pressure resistance. |
| Welding | TIG/MIG with argon shielding for oxidation-free joint. |
| Heat Treatment | Solution annealing at 1040–1120°C to eliminate stress. |
| Surface Finishing | Electro-polishing or mirror polish (Ra ≤0.8μm) for hygiene and corrosion resistance. |
Performance Details
1. Tensile & Bend Strength
- Tensile Strength: Ranges from 485 MPa (304) to 620 MPa (316), ensuring structural integrity under extreme loads in oil pipelines and chemical plants.
- Bend Strength: Achieves 180° cold bending at 1T radius without cracking, critical for tight installations like stainless steel 90 degree elbow 1/2 in confined spaces.
2. Weight Calculation
Calculate elbow weight using:
Weight (kg) = 0.0387 × (OD – WT) × WT × R × 0.02466
Example: A 1/2" Sch40 elbow (OD=21.3mm, WT=2.77mm, R=1.5D) ≈ 0.22 kg.
3. Marking & Traceability
Elbows are laser-etched with:
- Grade (304/316L),
- Heat number,
- Standard (ASME B16.9),
- Stainless steel 90 degree elbow dimensions (e.g., 1/2" × SCH40).
4. Why Stainless Steel Rusts?
Despite its corrosion resistance, rust can occur due to:
- Chloride Exposure: Prolonged contact with seawater, road salts, or industrial chemicals disrupts the chromium oxide layer.
- Mechanical Damage: Scratches from tools or abrasives expose the iron substrate to oxidation.
- Low Oxygen Environments: Stagnant water in crevices inhibits oxide regeneration.
- Galvanic Corrosion: Contact with dissimilar metals (e.g., carbon steel) triggers electrochemical reactions.
Key Applications
- Oil & Gas: High-pressure pipelines and refineries.
- Marine: Saltwater-resistant ship exhaust systems.
- Food & Pharma: Sanitary-grade stainless steel 90 elbow for hygienic processing lines.
- HVAC: Durable connections in heating/cooling systems.
Why Choose Our Stainless Steel Elbows?
- Certified Quality: ISO 9001, PED, and TÜV-certified production with full Mill Test Reports (MTC).
- Global Compliance: Meets ASME, DIN, JIS, and GB standards for international projects.
- Custom Solutions: Tailored stainless steel 90 degree elbow dimensions, finishes (mirror, HL), and pressure ratings.
- Rapid Delivery: 15–30 days for standard orders; expedited services available.
- Cost Efficiency: Outperforms carbon steel and zinc-plated alternatives in longevity.
