Aiman Metals, located in Kuala Lumpur, Malaysia, has built a solid reputation as a top-notch manufacturer and supplier of high-quality Tool and Die Steel S1 bars. These bars are celebrated for their outstanding impact toughness and workability. Catering to a diverse array of industries throughout Malaysia and Southeast Asia, Aiman Metals delivers steel bars that are specifically engineered to handle the rigors of extreme cold work and heavy-duty applications. Their dedication to precision, material integrity, and prompt delivery has made them a reliable partner for toolmakers and manufacturers alike. Aiman Metals offers both standard and custom sizes, ensuring optimal performance and reliability in tool and die production environments.
Tool and Die Steel S1 is a shock-resistant steel that primarily consists of 0.50–0.60% carbon, 2.75–3.25% nickel, 0.90–1.40% manganese, along with trace amounts of chromium, molybdenum, and silicon. This steel is known for its exceptional toughness, good wear resistance, and impressive impact strength, even in low temperatures. Typically, S1 steel boasts a tensile strength ranging from 850 to 1,100 MPa and a Rockwell hardness of 55 to 60 HRC after heat treatment. It effectively resists cracking under impact and thermal fatigue, making it an excellent choice for tools that face repeated shock and 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 | – |
Tool and Die Steel S1 bars are crafted specifically for applications that demand high impact resistance and durability. They find extensive use in the manufacturing of chisels, punches, rivet sets, shear blades, and other heavy-duty cold work tools. The ability of S1 steel to endure repeated shock loads without deforming or breaking makes it perfect for tooling in automotive manufacturing, construction, mining, and metal fabrication. Its reliable performance in sub-zero conditions also makes it suitable for cold forming operations. Manufacturers appreciate S1 bars for their machinability, toughness, and resilience, which contribute to longer tool life and minimized downtime in challenging production environments.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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