Maduka Metals, a prominent manufacturer and supplier located in Abuja, Nigeria, focuses on providing high-performance Tool and Die Steel S7 Bars that are built for outstanding toughness and impact resistance. These bars are crafted with precision to align with international standards, guaranteeing exceptional durability and machinability. Maduka Metals is committed to offering dependable steel solutions for various industries, including automotive, aerospace, construction, and heavy machinery. Thanks to cutting-edge production technology and strict quality control measures, the company ensures that every Tool and Die Steel S7 Bar consistently performs well, making it perfect for tools and dies that face intense shock and impact.
The composition of Tool and Die Steel S7 Bars includes carbon (0.45%), chromium (3.25%), molybdenum (1.4%), silicon (0.3%), and manganese (0.7%), along with small amounts of vanadium to enhance wear resistance. This blend strikes a fantastic balance between hardness, toughness, and shock resistance. Mechanically, S7 steel boasts a tensile strength of about 900–1100 MPa in its annealed state and can reach a hardness of up to 58 HRC after heat treatment. It also maintains excellent dimensional stability and high impact strength, making it a great choice for applications that involve heavy loads and repeated stress.
| ASTM A681-2008 | C | Si | Mn | P | S | Cr | V | Mo | ||||||
| S7/T41907 | 0.45 | 0.55 | 0.20 | 1.00 | 0.20 | 0.90 | 0.03 | 0.03 | 3.00 | 3.50 | – | 0.35 | 1.30 | 1.80 |
| DIN ISO 4957 | C | Si | Mn | P | S | Cr | V | Mo | ||||||
| 1.2355/50CrMoV13-15 | 0.45 | 0.55 | 0.20 | 0.80 | 0.50 | 0.90 | 0.03 | 0.02 | 3.00 | 3.50 | 0.15 | 0.35 | 1.30 | 1.70 |
| Properties | Metric |
| Hardness, Rockwell C (air cooled from 941°C, 649°C temper temperature) | 41 |
| Hardness, Rockwell C (air cooled from 941°C, 449°C temper temperature) | 53 |
| Hardness, Rockwell C (air cooled from 941°C, 149°C temper temperature) | 57 |
| Modulus of elasticity | 207 GPa |
| Charpy impact (V-notch; air cooled from 941°C; 425°C temper temperature) | 13.6 J |
| Charpy impact (V-notch; air cooled from 941°C; 649°C temper temperature) | 16.3 J |
| Charpy impact (V-notch; air cooled from 941°C; 200°C temper temperature) | 16.9 J |
| Machinability (1% carbon steel) | 70.0 – 75.0% |
| Poisson’s ratio | 0.27-0.30 |
| Country | USA | German |
| Standard | ASTM A681 | DIN EN ISO 4957 |
| Grades | S7/T41907 | 1.2355/50CrMoV13-15 |
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal expansion | 12.6 x 10-6/ºC | 20-200 | – |
The standard annealing temperature for Tool and Die Steel S7 bars is typically around 1,600°F to 1,650°F (871°C to 899°C), followed by slow cooling to relieve internal stresses.
Yes, Tool and Die Steel S7 bars are available in custom lengths and shapes, often tailored to specific customer requirements, ensuring versatility for various tooling and die applications.
Tool and Die Steel S7 Bars are extensively utilized in industries that need tools capable of enduring severe shock and impact forces. They are perfect for crafting chisels, shear blades, punches, forming dies, and riveting tools. In the automotive and aerospace fields, these bars are used to produce high-stress components like air hammers and impact tools. The steel’s unique combination of toughness and wear resistance also makes it ideal for cold-work tools, forging dies, and machinery parts that operate under cyclic loading, ensuring they deliver long-lasting and reliable performance even in tough conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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