Rupal Metals, a Delhi, India-based leading manufacturer and supplier of premium Tool and Die Steel O1 Bars, has years of experience in precision and follows a strong commitment to it. Rupal Metals provides premium-grade O1 tool steel that matches global standards for quality and performance. Rupal Metals stands out with its strong infrastructure, sophisticated processing methods, and customer satisfaction commitment. Rupal Metals serves all kinds of industries such as automotive, aerospace, and tool-making industries by offering their durable and reliable steel solutions that conform to precise specifications. They sell their Tool and Die Steel O1 Bars extensively for consistent performance and precision dimensions.
Tool and Die Steel O1 Bars are oil-hardening cold work tool steels containing high carbon and chromium as the primary composition. Their typical chemical composition is Carbon (0.90–1.00%), Chromium (0.50–0.60%), Manganese (1.00–1.20%), and trace amounts of Vanadium and Tungsten. This composition provides excellent hardenability and wear resistance. Mechanically, O1 steel offers a hardness of up to 63 HRC after heat treatment, good dimensional stability, and moderate toughness. Its fine grain structure and uniform hardness make it very suitable for precision tooling and die applications with sharp edges and consistent performance.
| CHEMICAL PROPERTIES | O1 STEEL (%) |
|---|---|
| Carbon | 0.85-1.00 |
| Manganese | 1.00-1.40 |
| Silicon | 0.50 |
| Chromium | 0.40-0.60 |
| Nickel | 0.30 |
| Tungsten | 0.40-0.60 |
| Vanadium | 0.30 |
| Copper | 0.25 |
| Phosphorus | 0.03 |
| Sulfur | 0.03 |
| MECHANICAL PROPERTIES | O1 STEEL (Imperial) |
|---|---|
| Tensile Strength | 245000 psi |
| Yield Strength | 218000 psi |
| Elongation at Break | 0.00% |
| Modulus of Elasticity | 31000 ksi |
| Hardness (Rockwell) | 50 |
| Hardness (Vickers) | 517 |
| Hardness (Knoop) | 513 |
| Country | USA | German | Japan |
| Standard | ASTM A681 | DIN EN ISO 4957 | JIS G4404 |
| Grades | O1 | 1.2510/100MnCrW4 | SKS3 |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal expansion | 10.6 x 10-6/ºC | 20-260 | – |
When choosing O1 tool and die steel bars, consider factors like hardness, wear resistance, machinability, heat treatment requirements, intended application (e.g., cutting, stamping), and cost-effectiveness for long-term use.
O1 tool and die steel bars have moderate resistance to corrosion due to their carbon content and alloy composition. However, they are not stainless and can rust without proper maintenance, such as coating or regular oiling.
Tool and Die Steel O1 Bars have widespread applications in industries where accuracy and longevity are paramount. The typical uses are in blanking dies, punches, broaches, cutting tools, and gauges. O1 steel’s high resistance to wear and its capability to hold a cutting edge make it a favorite for fine cutting tools and delicate dies. It is also applied to the production of shear blades, threading dies, and forming tools. Because of its hardness hardening stability, O1 is best for tools with little distortion. Its equilibrium properties render it versatile for applications in hand tools and industrial machine components with extended service life.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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