Phehlukwayo Metal, located in the vibrant city of Cape Town, South Africa, stands out as a premier manufacturer and supplier of high-performance Tool and Die Steel S1 Bars. With a strong focus on quality, innovation, and customer satisfaction, this company delivers top-notch steel solutions tailored for various industrial needs. Drawing on years of experience in the metallurgical field, Phehlukwayo Metal ensures that its S1 steel bars adhere to rigorous international standards. Thanks to cutting-edge manufacturing techniques and robust quality control measures, they guarantee exceptional strength, durability, and reliability, making Phehlukwayo Metal a trusted name in the tool and die steel industry across South Africa and beyond.
Tool and Die Steel S1 Bars, often referred to as SAE S1 or AISI S1, are specialized tungsten-based shock-resisting tool steels. Typically, their composition features 1.00–1.20% carbon, 2.50–3.25% tungsten, 0.30–0.60% molybdenum, along with trace amounts of silicon, manganese, and chromium. This unique blend results in high toughness, impressive wear resistance, and moderate hardness. With a tensile strength hovering around 2000 MPa and remarkable impact resistance, S1 bars are designed to perform under extreme stress. They maintain their mechanical properties even at elevated temperatures, making them perfect for high-impact applications that involve both thermal and mechanical shock.
| 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.
These Tool and Die Steel S1 Bars find extensive use in industries that demand materials capable of withstanding severe shock and wear. Their outstanding toughness and thermal resistance make them ideal for crafting cold-work tools like chisels, hammers, shear blades, punches, and dies. S1 steel is also favored for high-impact cutting tools and forming dies, especially in scenarios where sudden impacts or high compressive forces are common. The bars excel in oil-hardening environments and retain their integrity under repeated stress, making them a go-to choice in sectors such as automotive, construction, mining, and heavy machinery. With S1 bars, you can expect longer tool life and dependable performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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