Tool and Die Steel S7 Bars are well-known for their outstanding shock and impact resistance, making them perfect for high-stress tooling applications. Crafted to exacting standards, these bars blend toughness, hardness, and wear resistance, allowing them to handle repeated heavy loads and mechanical shocks with ease. S7 steel bars provide dependable performance in tough industrial settings, ensuring they last a long time. Their remarkable ability to resist deformation under impact makes them a go-to choice for manufacturing tools that demand high strength, resilience, and precision in processes like forging, stamping, and die-making.
The composition of Tool and Die Steel S7 Bars primarily includes chromium, molybdenum, and silicon, all alloyed with a high carbon content to deliver exceptional mechanical properties. They boast high tensile strength, impressive hardness, and superior toughness, even in extreme conditions. Mechanically, S7 steel bars shine with their remarkable shock resistance, wear resistance, and ability to maintain dimensional stability during heavy-duty operations. These features make them perfect for tools that experience rapid loading, mechanical shocks, or high-impact use while still performing reliably over time.
| 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.
You’ll find Tool and Die Steel S7 Bars commonly used across various industries, including automotive, metalworking, forging, and heavy machinery manufacturing. They’re ideal for crafting punches, dies, shear blades, chisels, hammers, and forming tools that need to endure high impact and mechanical stress. S7 bars are also utilized in both cold-work and hot-work tooling applications, offering excellent resistance to shock, deformation, and wear. With their blend of toughness, hardness, and reliability, S7 steel bars guarantee consistent performance and precision in demanding industrial and manufacturing tasks.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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