Investment Casting
Elbow
What are Investment Casting Elbows?
Investment Casting Elbows are precision-engineered pipe fittings designed to change the direction of flow within piping systems, typically at 45° or 90° angles. Manufactured using the investment casting process (also known as lost-wax casting), these elbows offer exceptional dimensional accuracy, smooth surface finish, and uniform wall thickness.
Asiad Steel Industries manufactures and exports Investment Casting Elbows under the Racer brand, ensuring excellent mechanical strength, leak-proof performance, and compliance with international standards for industrial and sanitary applications.
Key Features
Leak-Proof
Jointing
Durable
Construction
Easy Installation
& Removal
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Pipe Size (NPS) | ½” to 4” (DN15 – DN100) |
| Type | Elbow Type | 45°, 90°, Long Radius (LR), Short Radius (SR) |
| Manufacturing Process | – | Investment Casting (Lost-Wax Process) |
| Material Options | Stainless Steel | SS 304, SS 304L, SS 316, SS 316L, SS 321 |
| Pressure Ratings | – | PN6, PN10, PN16, Class 150 / 300 |
| Standards & Certifications | ASME / ANSI | ASME B16.9, B16.11, B31.3 |
| ASTM | ASTM A351, A182, A403 | |
| ISO / EN | ISO 4144, EN 10253, DIN 2605 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, IBR Approved | |
| Design Features | Wall Thickness | As per ASME B36.19M / Customized |
| End Connections | Threaded (BSP / NPT), Socket Weld, Butt Weld | |
| Surface Finish | Machined, Polished, Passivated | |
| Coating & Surface Finish | Anti-Corrosion Coating | Rust Preventive Oil / Black Oxide |
| Optional Coatings | PTFE, Epoxy, Electro-polished | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Radiography (RT), Ultrasonic (UT), Magnetic Particle (MPI), Dye Penetrant (DPT) | |
| Dimensional Accuracy | ±0.2 mm to ±0.5 mm as per casting grade | |
| Operating Temperature Range | – | -46°C to +400°C (material-dependent) |
Dimensions
| Nominal Size (NPS) | Outside Diameter (OD) | Center-to-End (A) | Radius (R) | Wall Thickness (T) |
|---|---|---|---|---|
| ½” (DN15) | 21.3 mm | 38 mm | 25 mm | 2.77 mm |
| ¾” (DN20) | 26.7 mm | 38 mm | 29 mm | 2.87 mm |
| 1” (DN25) | 33.4 mm | 38 mm | 38 mm | 3.38 mm |
| 1½” (DN40) | 48.3 mm | 57 mm | 57 mm | 3.68 mm |
| 2” (DN50) | 60.3 mm | 76 mm | 76 mm | 3.91 mm |
| 3” (DN80) | 88.9 mm | 114 mm | 114 mm | 5.49 mm |
| 4” (DN100) | 114.3 mm | 152 mm | 152 mm | 6.02 mm |
Note: Dimensions are nominal and based on ASME B16.9 / DIN 2605 standards.
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 750 | MPa |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 200 | HB (Brinell) |
| Elongation | ≥ 20 – 30 | % |
| Density | 7.8 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 27 – 70 | J (Charpy) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Corrosion Resistance | Excellent | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Surface Finish | Machined / Polished / Passivated | – |
| Operating Pressure Range | Up to 100 bar | Material & Design Dependent |
Chemical Composition
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
| Nitrogen (N) | — | — | ≤ 0.10 | ≤ 0.10 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
Applications of Investment Casting Threaded Elbows
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the main advantage of an investment casting elbow?
Can investment casting elbows handle high pressure?
Are investment casting elbows suitable for sanitary or food-grade use?
What surface finishes are available for investment casting elbows?
