Rupal Metals is a trusted manufacturer and supplier of Tool and Die Steel S1 Bars, proudly based in Delhi, India. We provide robust solutions for industries that need materials with high-impact resistance and toughness. Tool Steel S1 is a water-hardening, shock-resistant steel specifically designed for applications that experience significant mechanical shock and minimal wear. Our S1 bars are known for their exceptional toughness and moderate hardness, available in a variety of dimensions and custom specifications. With rigorous quality control and adherence to industry standards, Rupal Metals ensures that our durable, impact-resistant bars consistently perform well in both cold and hot work environments, maximizing performance and extending tool life.
Tool Steel S1 Bars typically consist of 0.50–0.60% Carbon, 1.00–1.50% Manganese, 0.25–0.35% Silicon, 2.75–3.25% Nickel, 0.50–0.80% Molybdenum, and 0.25–0.35% Tungsten. These components give S1 steel its remarkable impact toughness and resistance to softening at higher temperatures. After heat treatment, S1 achieves a hardness of 56–58 HRC, along with good tensile strength and ductility. Its water-hardening properties enhance its ability to resist shock, making it perfect for tools that face repeated impacts or vibrations. The steel maintains its structural integrity even under thermal and mechanical stress.
| C | Mn | Si | Cr | Ni | Mo | W | V | Cu | P | S |
| 0.40-0.55 | 0.10-0.40 | 0.15-1.20 | 1.00-1.80 | 0.30 | 0.50 | 1.50-3.00 | 0.15-0.30 | 0.25 | 0.03 | 0.03 |
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Rockwell C (air cooled from 899°C, 30 mins) | 54.5 | 54.5 |
| 56 | 56 | |
| Hardness, Rockwell C (air cooled from 982°C, 30 mins) | 56.5 | 56.5 |
| Modulus of elasticity | 207 GPa | 30000 ksi |
| Charpy impact (V-notch; oil quenched from 954°C; 149°C temper temperature) | 10.8 J | 8.00 ft-lb |
| Charpy impact (V-notch; oil quenched from 954°C; 625°C temper temperature) | 29.8 J | 22.0 ft-lb |
| Machinability (1% carbon steel) | 70.0 – 75.0% | 70.0 – 75.0% |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| AISI / SAE | DIN / W.Nr | UNS | JIS | GB | AFNOR |
| S1 | 1.2550 | T41901 | G4053 | GB/T 3077 | 55 WC 20 |
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal expansion | 12.4 x 10-6/ºC | 20-100 | – |
When choosing Tool and Die Steel S1 bars, consider hardness, wear resistance, toughness, machinability, heat treatment capabilities, and the specific requirements of the application to ensure optimal performance and durability.
Tool and Die Steel S1 bars resist corrosion due to their alloy composition, which includes elements like chromium and molybdenum. These elements form a protective oxide layer, enhancing resistance to oxidation and rust.
Tool and Die Steel S1 Bars are extensively utilized in the production of tools that endure extreme impact and vibration. Common applications include cold chisels, rivet sets, punches, hammers, shear blades, and tools used in hot working processes. Their outstanding toughness makes them ideal for shock-loading scenarios where tools need to absorb sudden forces without breaking. S1 steel is also perfect for hand tools, jackhammer bits, and heavy-duty woodworking tools. Its resistance to softening at elevated temperatures ensures reliable performance in both cold and moderately hot work environments, making it a go-to choice for many applications.
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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