Ronwen Flanges, a reputable manufacturer and supplier located in Cape Town, South Africa, is well-known for its high-quality AISI 4140 Flanges, which are engineered to perform reliably even under extreme stress, pressure, and temperature. These flanges are made from top-notch alloy steel, guaranteeing remarkable strength, toughness, and resistance to wear. Perfect for heavy-duty industrial applications, AISI 4140 flanges find their place in sectors like oil and gas, power generation, and mechanical engineering. Ronwen Flanges employs cutting-edge manufacturing techniques alongside rigorous quality assurance to ensure their products meet international standards, delivering long-lasting and efficient performance.
AISI 4140 Flanges primarily consist of chromium, molybdenum, and carbon, creating a low-alloy steel celebrated for its exceptional hardenability and mechanical strength. The typical chemical makeup includes around 0.40% carbon, 0.80–1.10% chromium, and 0.15–0.25% molybdenum. These components boost the alloy’s tensile strength, which ranges from 655 to 1080 MPa, along with a yield strength of about 415 MPa. The material also showcases impressive toughness, fatigue resistance, and stability at high temperatures, making it ideal for heat-treated and quenched applications that require top-notch mechanical reliability.
| 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 |
Ronwen Flanges, a leading supplier in Cape Town, South Africa, 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 extensively utilized in industries that require high strength and resistance to wear and fatigue. You’ll commonly find them in oil and gas pipelines, power plants, refineries, hydraulic machinery, and automotive systems. They’re also suitable for high-pressure and high-temperature settings, such as steam lines and process equipment. Their excellent machinability and weldability make them a go-to choice for custom-engineered components. With a blend of durability, impact resistance, and precise dimensions, AISI 4140 flanges consistently deliver reliable performance in demanding industrial environments.
Yes, we offer custom sizes for AISI 4140 Flanges to meet specific project needs. Our team at Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.
| 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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