Faizan Flanges is a leading manufacturer and supplier of AISI 4140 Flanges in Doha, Qatar, offering robust and precision-engineered solutions for demanding industrial applications. AISI 4140 is a chromium-molybdenum alloy steel known for its high strength, excellent toughness, and outstanding resistance to wear and fatigue. Manufactured using advanced forging processes and strict quality control standards, our AISI 4140 flanges ensure superior dimensional accuracy, pressure-handling capability, and long-term performance. Faizan Flanges supplies these flanges in various sizes, pressure classes, and international standards to meet the requirements of oil & gas, power generation, and heavy engineering industries
AISI 4140 alloy steel contains carbon (0.38–0.43%), chromium (0.80–1.10%), and molybdenum (0.15–0.25%), along with manganese, silicon, phosphorus, and sulfur in controlled limits. This composition provides excellent tensile strength, high hardness, and superior impact resistance. AISI 4140 flanges exhibit good fatigue strength, wear resistance, and hardenability. The material performs reliably under high stress, pressure, and moderate temperature conditions while maintaining good machinability and heat-treatment flexibility.
| Size Chart | 1/2″ to 48″ |
|---|---|
| Pressure Rating | Class 150, 600, 300, 1500, 900, 2500 LBS |
| Pressure Calculation in DIN | 6/ 16/ 10/ 40/ 25Bar / PN6 PN16 PN10 PN40 PN25 PN64 |
| JIS | 5K, 16 K, 10 K, 30 K, 20 K, 63 K, 40 K |
| UNI | 6/ 16/ 10/ 40/ 25Bar |
| EN | 6/ 16/ 10/ 40/ 25Bar |
| Flange Face Type | Lap-Joint Face, Large Male-Female, Raised Face, Flat Face, Small Tongue, Small Male-Female, Ring Type Joint, Large Tongue & Groove Flanges manufacturer and Supplier |
| Flanges Marking | All Flanges are marked as follows: Supplier or Manufacturer’s Name, Size, Class, Bore, Dimension, Material, Heat No. Or according to the customer’s request. |
| Element | Content |
|---|---|
| Chromium | 0.80 Tp 1.10 |
| Manganese | 0.75 Tp 1.0 |
| Silicon | 0.15 To 0.30 |
| Carbon | 0.380 To 0.430 |
| Molybdenum | 0.15 To 0.25 |
| Sulfur | 0.040 |
| Phosphorous | 0.035 |
| Iron | Balance |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Bulk modulus | 140 GPa | 20300 ksi |
| Yield strength | 415 MPa | 60200 psi |
| Shear modulus | 80 GPa | 11600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Knoop | 219 | 219 |
| Hardness, Rockwell B | 92 | 92 |
| Hardness, Brinell | 197 | 197 |
| Hardness, Rockwell C | 13 | 13 |
| Machinability | 65 | 65 |
| Hardness, Vickers | 207 | 207 |
Faizan Flanges, a leading supplier in Doha, Qatar, offers an extensive selection of AISI 4140 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
AISI 4140 Flanges are widely used in industries that require high-strength, durable components for heavy-duty applications. Common uses include automotive, aerospace, oil & gas, and power generation sectors, where they are employed in high-pressure systems, piping, and machinery. These flanges are essential for connecting pipes, valves, and other equipment in critical systems such as hydraulic systems, pressure vessels, and fuel lines. Their exceptional strength, wear resistance, and ability to withstand harsh conditions make AISI 4140 flanges ideal for ensuring reliable and long-lasting connections in demanding environments.
Yes, we offer custom sizes for AISI 4140 Flanges to meet specific project needs. Our team at Faizan Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@faizanflanges.com.
| STANDARD | UNS | WERKSTOFF NR. |
| AISI 4140 | G41400 | 1.7225 |
Uses and Applications – AISI 4140 Flanges
AISI 4140 flanges are widely used in heavy-duty industrial applications where strength and durability are critical. These flanges are commonly utilized in oil and gas pipelines, petrochemical plants, refineries, and pressure vessel systems. Their excellent mechanical properties make them suitable for power generation equipment, hydraulic systems, and heat exchangers. AISI 4140 flanges are also used in mining, construction machinery, and heavy structural applications that require resistance to wear, shock, and mechanical stress. Their reliability ensures safe and efficient performance in demanding operational environments.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
Copyright 2024 Faizan Flanges, All rights reserved
