Quan Flanges and Plates, located in Da Nang, Vietnam, stands out as a top manufacturer and supplier of AISI 4140 flanges, providing high-performance products designed to meet the rigorous demands of critical industries. Our AISI 4140 flanges are renowned for their exceptional strength, toughness, and wear resistance, all crafted with precision and a commitment to international quality standards. We serve a variety of sectors, including oil and gas, petrochemicals, power generation, and heavy engineering. Thanks to our state-of-the-art production facilities, dependable service, and competitive pricing, Quan Flanges and Plates has built a solid reputation for durability and customer satisfaction around the globe.
AISI 4140 flanges are made from a blend of carbon (0.38–0.43%), chromium (0.8–1.1%), molybdenum (0.15–0.25%), and manganese (0.75–1.0%), along with trace amounts of silicon, sulfur, and phosphorus. This chromium-molybdenum alloy steel offers a fantastic mix of strength, toughness, and resistance to wear and fatigue. In terms of mechanical properties, AISI 4140 flanges boast a tensile strength ranging from 655 to 1040 MPa, a yield strength of 415 to 835 MPa, and an elongation of 20 to 25%. They also provide good impact resistance and high hardenability, making them perfect for heavy-duty and high-stress industrial applications.
| 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 |
Quan Flanges, a leading supplier in Da Nang, Vietnam, 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.
These flanges are widely utilized in industries that demand outstanding strength and fatigue resistance in harsh conditions. You’ll often find them in oil and gas exploration, drilling equipment, pressure vessels, and petrochemical processing systems. Power plants and heavy engineering sectors rely on them for piping systems, turbine components, and high-pressure applications. Their toughness and machinability make them ideal for automotive, aerospace, and defense applications where reliability is paramount. Additionally, AISI 4140 flanges are popular in forging, pipeline connections, and structural assemblies, ensuring long-lasting durability and consistent performance in challenging environments.
Yes, we offer custom sizes for AISI 4140 Flanges to meet specific project needs. Our team at Quan Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@quanflanges.com.
| STANDARD | UNS | WERKSTOFF NR. |
| AISI 4140 | G41400 | 1.7225 |
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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