Looking for trusted Carbon EN31 Steel Round Bar Manufacturers & Suppliers in Mumbai ? We Titan Steel, Mumbai provide durable, precision-engineered carbon steel round bars for construction, industrial, and engineering needs. Get reliable quality, competitive prices, and timely delivery from leading suppliers in Mumbai.
We manufacture EN31 Round Bars using high-quality billets and blooms to ensure superior quality for our customers. EN31 round bars are widely used in machinery and OEM auto components, adhering to stringent industry quality parameters. These round bars are provided with test certificates and can be supplied in bulk or retail quantities based on customer requirements. EN31 alloy steel round bars are used across various industries for their high strength, wear resistance, and ductility.
EN31 is a high-strength steel alloy that is hardened and tempered before being supplied. It contains nickel, chromium, and molybdenum, making it a high-tensile steel with excellent wear resistance and ductility. EN31 also possesses good impact properties at low temperatures and can be used for elevated temperature applications. Its high internal and external strength makes it a popular choice for demanding industrial applications.
EN31 steel is used in a wide range of applications that require high strength and wear resistance, including:
| Element | C | Si | Mn | P (Max) | S (Max) | Cr |
|---|---|---|---|---|---|---|
| Content | 0.95-1.10 | 0.10-0.35 | 0.40-0.70 | 0.040 Max | 0.050 Max | 1.20-1.60 |
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 750 N/mm² | 108,750 psi |
| Yield Stress | 450 N/mm² | 65,250 psi |
| Reduction of Area | 45% | 45% |
| Elongation | 30% | 30% |
| Modulus of Elasticity | 215,000 N/mm² | 31,183,000 psi |
| Hardness | 63 HRC | 63 HRC |
EN31 exhibits a high hardness of up to 63 HRC, making it highly wear-resistant and suitable for heavy-duty applications.
Heat treatment varies based on the shape and size of the EN31 components. Factors like furnace type, quenching medium, and workpiece transfer are critical for optimizing the process.
| Temperature [°C] | 150 | 200 | 250 | 300 |
|---|---|---|---|---|
| Hardness (HRC) | 63-62 | 62-61 | 60-59 | 57-56 |
| Property | Value |
|---|---|
| Thermal Conductivity | 46.6 W/m·K |
| Density | 7.81 g/cm³ |
| Melting Point | 1540°C |
| Property | Metric | Imperial |
|---|---|---|
| Thermal Expansion Coefficient | 11.9 µm/m°C | 6.61 µin/in°F |
| Thermal Conductivity | 46.6 W/m·K | 323 BTU in/hr.ft².°F |
Heat slowly to 1000-1050°C for forging. Ensure adequate soaking at forging temperatures, and do not forge below 850°C. Post-forging, allow EN31 steel to cool slowly, ideally in a furnace.
Stress-relieving can be beneficial before hardening, particularly for heavily machined components. Heat to 700°C, soak thoroughly, and cool in air.
Normalize by heating EN31 to 872°C, followed by slow cooling. This process helps relieve machining stresses and prepares the steel for further treatment.
EN31 is usually supplied in annealed form. If re-annealing is required, heat slowly to 800-810°C, soak thoroughly, and cool slowly in the furnace.
The density of EN31 steel is 7.81 g/cm³, making it a strong and durable material for industrial applications.
EN31 steel’s machinability is well-suited for the automobile industry. It responds well to wire electrical discharge machining (WEDM). Parameters such as pulse on-time, servo voltage, wire feed, and wire tension impact the quality of the machined surface, with low pulse on-time reducing edge roughness.
EN31 Alloy Steel can be welded, but the process must account for its high carbon content to avoid cracking. Preheating and post-weld treatments like annealing are recommended to achieve the desired strength and prevent material failure.
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