Anucha Metals stands out as a reliable manufacturer and supplier of Carbon Steel EN-31 R-100 Bars right in the heart of Bangkok, Thailand. They offer top-notch alloy steel bars that are designed for exceptional hardness, strength, and wear resistance. Each bar is crafted to meet precise specifications, featuring a smooth surface finish and consistent mechanical properties, making them perfect for demanding engineering, industrial, and machining tasks. Anucha Metals is committed to delivering quality and durability, ensuring that their EN-31 R-100 bars are ready for high-stress and high-performance applications.
These Carbon Steel EN-31 R-100 Bars are primarily made from high-carbon alloy steel, containing about 1% carbon, with added chromium and manganese to boost hardness, wear resistance, and tensile strength. The R-100 grade is both hardened and tempered, providing outstanding toughness, fatigue resistance, and dimensional stability even under intense stress, which makes it ideal for precision engineering and heavy-duty uses.
| 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.
You’ll find these bars commonly used in bearing components, shafts, gears, rollers, spindles, industrial machinery, automotive parts, and tool-making applications, where high hardness, wear resistance, and mechanical reliability are crucial. Their unique blend of strength, toughness, and precision makes Carbon Steel EN-31 R-100 Bars a go-to choice for critical engineering and industrial needs.






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