From the heart of Hamilton, New Zealand, Hemi Metals stands as a trusted manufacturer and supplier of top-tier industrial materials. We take pride in offering high-performance Carbon Steel EN-31 R-100 Bars, a product rigorously forged to meet the strictest standards. Sourced and processed with meticulous attention to detail, our EN-31 bars are the backbone of demanding applications, providing the exceptional strength and durability that local and international industries rely on to build stronger, more reliable machinery and components.
The EN-31 R-100 grade is celebrated for its composition, primarily a high carbon steel with significant chromium content, which gives it outstanding wear resistance. Its mechanical properties are defined by a Rockwell hardness of R-100, indicating a superior level of toughness. This particular grade achieves an excellent balance, offering the high strength needed for heavy-duty parts while retaining good structural integrity, making it far more resilient than many standard carbon steels under stressful operating conditions.
| 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.
Because of its remarkable hardness and resistance to abrasion, EN-31 R-100 Bars are often the go-to choice for heavy-duty components. You’ll commonly find this steel used in critical parts like high-strength gears, shafts, spindles, and durable pins. Its properties make it ideal for applications within the automotive, tooling, and general engineering sectors, where parts must withstand constant friction and high stress. Essentially, it’s the material selected when failure is not an option, ensuring longevity and reliability in the toughest working environments.






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