Luois Metals stands out as a top-notch manufacturer and supplier of Tool and Die Steel S7 Bars, proudly serving various industries across Houston, USA. Known for their exceptional quality and precision engineering, Luois Metals provides S7 steel bars that are tough and highly resistant to impact. Produced under strict quality control measures, these bars are specifically designed for demanding tooling applications where strength and shock resistance are essential. Whether it’s for forging dies or heavy-duty chisels, Luois Metals consistently delivers products that surpass performance expectations. With responsive customer support, timely deliveries, and technical know-how, the company is a reliable partner for clients in need of dependable S7 steel solutions.
Tool and Die Steel S7 Bars are air-hardening, shock-resistant steels with a composition of around 0.45–0.55% carbon, 3.0–3.5% chromium, 1.4–2.0% molybdenum, along with trace amounts of manganese and silicon. This unique blend provides an impressive mix of toughness and wear resistance. After heat treatment, S7 can reach a Rockwell hardness of up to 58 HRC while maintaining high impact strength. It excels in resisting deformation under sudden loads and thermal shock, making it perfect for tools that face intense impact and rapid cooling. The steel also offers good machinability in its annealed state.
| 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.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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