Chung Metals is Da Nang, Vietnam-based manufacturing and supplying high-quality metal products in different industries. We at Chung Metals take a strong commitment towards precision and excellence and provide a varied range of materials from Tool and Die Steel S7 Bars. Made from S7, our bars are known for excellent toughness with great resistance to wear and excellence in withstanding even the most rigorous impact forces; they find heavy applications in tooling, die-casting, and heavy machinery. At Chung Metals, we pride ourselves on delivering premium materials that meet the rigorous demands of our customers while maintaining a focus on reliability and customer satisfaction.
The S7 Tool and Die Steel Bars are high-carbon, high-chromium alloys made to exhibit superior toughness and wear resistance. Typical composition consists of Carbon: 0.45–0.55%, Chromium: 5.25–6.25%, Manganese: 0.60–0.90%, Silicon: 0.60–1.00%, Vanadium: 1.00–1.50%, and trace amounts of Molybdenum: 0.30–0.50%. All these elements help steel show good strength, impact resistance, and the capacity to work under elevated temperatures. S7 bars offer hardness in the 45–55 HRC range and have outstanding toughness, providing very good resistance to fatigue; as such, S7 bars can be applied as tooling or die-casting.
| 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 is highly demanded in the making of tools and dies, with high resistance to shock and wear. Some applications of this steel involve making molds, punches, hammers, shear blades, and more heavy-duty tools used with frequent impacts and stresses. S7 exhibits excellent toughness with high strength. These properties make the steel ideal for use in precision and durability-demanding industries, such as in the automotive and aerospace sectors as well as in manufacturing. It is particularly well-suited for tools used in hot and cold forming processes, as well as for applications that demand resistance to fatigue, cracking, and wear under extreme conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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