Sahil Metals, located in Riyadh, Saudi Arabia, stands out as a top manufacturer and supplier of high-quality alloy steel products tailored for demanding engineering applications. One of their flagship products is the **Carbon Steel EN‑31 (R‑100) Bars**, also referred to as 100Cr6 or EN31. These bars are celebrated for their impressive hardness, wear resistance, and fatigue strength. Crafted to adhere to strict international standards, they come with precise tolerances and heat treatments, making them perfect for essential components in the manufacturing, automotive, and heavy machinery industries throughout Saudi Arabia and the Gulf region.
When it comes to composition, **Carbon Steel EN‑31 (R‑100) Bars** typically boast a high-carbon, chromium-alloyed makeup—featuring around 0.95–1.10% carbon, 1.20–1.60% chromium, 0.30–0.75% manganese, and up to 0.35% silicon. In their hardened and tempered state, these bars deliver tensile strength ranging from about 750 to 1,000 MPa, yield strength between 450 to 800 MPa, elongation of around 10–16%, and a hardness that can reach up to 65 HRC. The heat treatment process generally involves quenching in oil after heating to approximately 820–860 °C, followed by tempering at temperatures between 180–225 °C.
| Grades | EN 8, EN 19, EN 24, EN 31 |
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Carbon Steel EN Series Round Bars | 3.0 – 50.8 mm, Over 50.8 – 300mm |
| Carbon Steel EN Series Rectangular Bars | 6.35 x 12.7mm,6.35 x 25.4mm,12.7 x 25.4mm |
| Carbon Steel EN Series Hex Bars | AF5.8mm–17mm |
| Carbon Steel EN Series Square Bars | AF2mm – 14mm, AF6.35mm,9.5mm,12.7mm, 15.98mm,19.0mm, 25.4mm |
| Carbon Steel EN Series Flat Bars | 1/2” to 10” in thickness range of 2mm to 150mm |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
| Carbon | 0.95 / 1.10 |
| Manganese | 0.40 / 0.70 |
| Silicon | 0.10 / 0.35 |
| Sulfur | Max 0.050 |
| Phosphorus | Max 0.040 |
| Chromium | 1.20 – 1.60 |
| NAME OF MATERIAL | COMPOSITION IN % OF WEIGHT | THERMAL CONDUCTIVITY W/M-K | DENSITY KG/M^3 | MELTING POINT | |
| C | Mn Si Cr S P Mg | ||||
| En-31 IS-103 Crl | 1.5 | 0.52 0.22 1.3 0.05 0.05 – | 46.6 | 7810 | 1540 |
| BRITISH BS 970:1991 | 535A99 |
| BRITISH BS 970:1955 | EN31 |
| GERMAN DIN | 100CR6 |
| FRENCH AFNOR | 100C6 |
| SWEDISH SS | 2258 |
| AMERICAN SAE / AISI | 52100 |
They offer high hardness, excellent wear resistance, and durability, making them ideal for heavy-duty and high-performance applications.
They are commonly used in automotive, engineering, and tooling industries for components like gears, shafts, dies, and cutting tools.
Yes, we provide EN-31 R-100 Bars and Rods in various sizes and specifications tailored to meet specific application requirements.
The **applications** for EN‑31 (R‑100) Bars are extensive, including the production of high-load and wear-critical components like bearings, gears, shafts, punches, dies, and heavy-duty machine parts. Their remarkable hardness and outstanding wear resistance make them particularly suited for dynamic load environments and precision tooling tasks. With their exceptional mechanical properties and dependable performance under stress, these bars have become a go-to choice for various industries.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sahil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Riyadh, Saudi Arabia
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