We are Nimish Metal, a trusted name in Safat, Kuwait, supplying the backbone of countless workshops and factories: premium Tool and Die Steel O1 bars. For years, we’ve been the reliable partner for those who demand precision and durability in their metalwork. We understand that your tools are only as good as the steel they’re made from, which is why we ensure every bar we supply meets the highest standards for critical fabrication and industrial use.
This steel is a versatile, oil-hardening grade known for its excellent combination of hardness and toughness. Its composition typically includes a careful balance of carbon, manganese, and chromium, with small additions of tungsten and vanadium. This allows it to achieve a high degree of hardness through heat treatment while retaining good dimensional stability. It’s a workhorse grade, prized for its ability to hold a sharp edge, making it a fundamental choice for toolmakers.
| 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.
The uses for O1 tool steel are incredibly diverse, forming the core of many manufacturing processes. It is the preferred material for crafting precision gauges, a variety of fixtures, and complex custom tools where stability is paramount. Many professionals rely on it for creating durable drills, reamers, and most notably, intricate dies and molds for forming operations. Its ability to be honed to a fine edge also makes it perfect for precision knives and cutting tools used in specialized applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Nimish Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Safat, Kuwait
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