Corrosion-Proof Stainless Steel 90 Degree Elbow | 5" Precision

Corrosion-Proof Stainless Steel 90 Degree Elbow | 5" Precision

Product Overview

Engineered for industrial and sanitary applications requiring uncompromising durability, our yanmar stainless steel mixing elbow delivers exceptional corrosion resistance and structural integrity. Compliant with ASME B16.9, DIN 2605, and JIS B2313 standards, this 90° elbow ensures seamless directional changes in pipelines for oil/gas, marine, food processing, and chemical industries. Its mirror-polished surface (Ra ≤0.4μm) meets hygienic requirements, preventing bacterial growth and contamination.

Technical Specifications

Key Properties

1. Tensile & Bend Strength

• Tensile Strength: 515–827 MPa (316L), optimized for high-pressure environments like marine and chemical pipelines. Cold-worked variants achieve up to 1050 MPa for extreme stress conditions.
• Bend Strength: Austenitic microstructure ensures resistance to deformation even at sharp angles. The 180 degree stainless steel elbow variant maintains structural integrity with a 1.5D bend radius, ideal for compact installations.

2. Identification & Traceability

• Laser Etching: Permanent markings include material grade (e.g., SS316L), size, and certification codes (ASME B16.9).
• Color Coding: Optional epoxy-coated ends (silver/black) for rapid identification in multi-pipeline systems.

3. Weight Calculation

For precision engineering, use the formula:
$W=0.387\times S\times (D-S)\times R/1000$

• W: Weight (kg)
• S: Wall Thickness (mm)
• D: Outer Diameter (mm)
• R: Bend Radius (1D or 1.5D).

Example:
For a 5″ SCH40 elbow (D=141.3mm, S=6.55mm, R=1.5D):
$W\approx 3.2\text{kg}$

4. Why Stainless Steel Rusts?

Despite superior corrosion resistance, environmental factors can cause localized rust:

1. Passive Layer Damage: Scratches or abrasive cleaning disrupt the chromium oxide layer, exposing iron to oxidation.
2. Galvanic Corrosion: Contact with carbon steel in humid environments triggers electrochemical reactions.
3. Chloride Exposure: Coastal or chemical settings accelerate pitting in 316L grades (Mo content mitigates but does not eliminate this).
4. Organic Contaminants: Residual food acids or oils degrade surfaces if not sanitized promptly.
5. High-Temperature Scaling: Prolonged exposure >400°C oxidizes chromium, reducing protective properties.

Why Choose Our Stainless Steel Elbows?

1. Global Compliance: Meets ASME, DIN, JIS, and 3A standards for cross-industry compatibility.
2. Custom Sizing: Tailored 2.5 stainless steel 45 degree elbow and wall thickness (SCH10S–XXS) for unique projects.
3. Hygienic Design: Mirror-polished surfaces (Ra ≤0.4μm) prevent bacterial growth in food/pharma industries.
4. Lifetime Warranty: Hydrostatic, radiographic, and ultrasonic testing ensure zero defects.
5. Sustainable Production: Recycled SS316L reduces environmental impact without compromising durability.