When it comes to **Tool and Die Steel S7 Bars**, these materials are highly regarded for their impressive shock resistance, remarkable toughness, and dependable durability. This makes them perfect for situations where repeated impacts and sudden loads are a factor. As an air-hardening, shock-resisting tool steel, S7 strikes a great balance between hardness and resistance to deformation and cracking. These bars are crafted to excel in tough environments where both strength and flexibility are crucial. With their excellent machinability, stability during heat treatment, and wear resistance, Tool and Die Steel S7 Bars have become a go-to choice for precision tools, industrial components, and heavy-duty mechanical applications.
The composition of Tool and Die Steel S7 Bars includes chromium, molybdenum, and vanadium, all blended with medium carbon content to create a well-rounded set of mechanical properties. This unique mix results in high impact strength, outstanding toughness, and the ability to retain hardness without becoming brittle. S7 steel is known for its impressive resistance to softening at high temperatures and performs reliably during heat treatment with minimal distortion. Its exceptional wear resistance and dimensional stability make S7 Bars ideal for demanding applications that require shock load absorption, durability, and a long service life.
| 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 being used across various industries, including metalworking, automotive, construction, and heavy machinery. Their remarkable shock resistance makes them perfect for crafting chisels, punches, shear blades, riveting tools, forming dies, and components for machine tools. They also shine in forging operations, impact tools, and any application where materials need to endure repeated stress without cracking. S7 Bars excel in both high-impact and moderate-wear conditions, proving their worth in a wide range of demanding tasks.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Junaid Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manama, Bahrain
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