Robust Stainless Steel 90 Degree Elbow | Large-Scale Applications

Product Overview

Our 316 stainless steel 90 degree elbow is engineered for industrial and commercial applications requiring unmatched durability and corrosion resistance. Compliant with ASME B16.9, ASTM A403, and DIN 2605 standards, these elbows are ideal for high-pressure piping systems in oil & gas, petrochemical, marine, and HVAC industries. Available in seamless and welded designs, with customizable configurations like 4 inch stainless steel 45 degree elbow, our products ensure reliability in extreme environments.

Technical Specifications

1. Chemical Composition

Element	304 Stainless Steel (%)	316 Stainless Steel (%)
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
Silicon (Si)	≤1.00	≤1.00

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. Available Dimensions & Configurations

Type	Radius (D)	Size Range (inches)	Wall Thickness (SCH)	Surface Finish
304 stainless steel elbow (LR)	1.5D	½"–48"	10S, 40S, 80S, XXS	2B, Mirror, HL
316 stainless steel 90 degree elbow (SR)	1.0D	½"–24"	5S, STD, XS	Sandblasted, Electro-Polished

Custom options include 4 inch stainless steel 45 degree elbow and threaded ends for rapid installation.

Key Features & Applications

1. Corrosion Resistance

304 Grade: Resists oxidation and mild acids, ideal for food processing and architectural cladding.
316 Grade: Enhanced with molybdenum for chloride resistance, perfect for marine and chemical industries.

2. High-Temperature Stability

Withstands up to 870°C (304) and 925°C (316), suitable for exhaust systems and thermal pipelines.

3. Seamless vs. Welded Construction

Seamless Elbows: Forged for uniform strength and high-pressure applications (e.g., oil refineries).
Welded Elbows: Cost-effective for low-to-medium pressure systems (e.g., HVAC and water supply).

4. Custom Solutions

Tailored 4 inch stainless steel 45 degree elbow designs available with anti-slip textures or sanitary finishes for pharmaceutical use.

Performance Details

1. Tensile & Bend Strength

Tensile Strength: 485–620 MPa ensures structural integrity under extreme loads, critical for petrochemical pipelines.
Bend Strength: Achieves 180° cold bending at 1T radius without cracking, ideal for compact installations.

2. Weight Calculation

Calculate elbow weight using:
Weight (kg) = 0.0387 × (OD – WT) × WT × R × 0.02466
Example: A 4" Sch40 elbow (OD=114.3mm, WT=6.02mm, R=1.5D) ≈ 3.2 kg.

3. Marking & Traceability

Elbows are laser-etched with:

Grade (304/316L)
Heat number
Standard (ASME B16.9)
Size (e.g., 4 inch stainless steel 45 degree elbow).

4. Why Stainless Steel Rusts?

Despite its resistance, rust can occur due to:

Chloride Exposure: Prolonged contact with seawater or de-icing salts damages the chromium oxide layer.
Mechanical Damage: Scratches from tools 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.

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 dimensions (including 4 inch stainless steel 45 degree elbow) and finishes.
Rapid Delivery: 15–30 days for standard orders; expedited services available.
Cost Efficiency: Superior longevity compared to carbon steel, reducing lifecycle costs.

Robust Stainless Steel 90 Degree Elbow | Large-Scale Applications