Luois Metals offers high-quality EN‑8 medium carbon steel bars from our Houston facility, servicing industrial manufacturers across the USA. Known for its balanced strength and machinability, EN‑8 is sourced from trusted mills and processed to ASTM A108 standards. Our EN‑8 bars are precision-ground and available in various sizes and tempers to support engineering and fabrication projects. Through regular quality checks and secure inventory, we provide cost-effective solutions for the automotive, agricultural, and general engineering industries. Luois Metals‘ committed staff ensures on-time delivery, technical assistance, and special dimensions to suit your specific application needs.
EN‑8 carbon steel has about 0.36–0.44% carbon, 0.60–0.90% manganese, and trace silicon and phosphorus. EN‑8 provides tensile strength of 550–750 MPa, yield strength about 300–450 MPa, and elongation of 12–14%. Brinell hardness is between 170–217 HB. EN‑8 material has a combination of moderate amount of carbon with high toughness and machinability in normalized or annealed state. This makes the ratio of strength and formability suitable for heat treatment and surface hardening processes, and EN‑8 has the standards of ASTM A108 and BS970.
| 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. |
| Grade | ||||||
| C% | Si% | Mn% | Cr% | Mo% | W% | |
| EN-1A | 0.007 TO 0.15 | 0.10 | 0.80 TO 1.00 | S | P | – |
| 0.20 TO 0.30 | 0.70 MAX | |||||
| EN-8 | 0.35 TO 0.45 | 0.05 TO 0.30 | 0.60 TO 1.00 | S | P | – |
| 0.06 MAX | 0.06 MAX | |||||
| EN-9 | 0.50 TO 0.60 | 0.05 TO 0.30 | 0.5 TO 0.80 | – | – | – |
| EN-19(V 320) | 0.35 TO 0.45 | 0.10 TO 0.30 | 0.5 TO 0.80 | 0.90 TO 1.40 | 0.20 TO 0.40 | |
| EN-24(V 130) | 0.35 TO 0.45 | 0.10 TO 0.35 | 0.45 TO 0.70 | 0.90 TO 1.40 | 0.20 TO 0.35 | NI |
| 1.3 TO 1.8 | ||||||
| EN-31 R-100 | 0.90 TO 1.20 | 0.10 TO 0.35 | 0.30 TO 0.75 | 1.00 TO 1.60 | – | – |
| EN-36C E-200 | 0.12 TO 0.18 | 0.10 TO 0.35 | 0.30 TO 0.60 | 0.60 TO 1.10 | – | NI |
| 3.0 TO 3.75 | ||||||
| EN-42 | 0.70 TO 0.85 | 0.10 TO 0.40 | 0.55 TO 0.75 | – | – | – |
| EN-44 | 0.90 TO 1.20 | 0.30 | 0.45 TO 0.70 | – | – | – |
| EN-45 F-110 | 50 TO 0.60 | 1.5 TO 2.0 | 0.70 TO 1.00 | – | – | – |
| EN-351 | 0.10 TO 0.20 | 0.35 | 0.60 TO 1.00 | 0.40 to 0.80 | 0.08 to 0.10 | NI |
| 0.60 TO 1.00 | ||||||
| EN-353 | 0.10 TO 0.20 | 0.35 | 0.50 TO 1.00 | 0.75 TO 1.25 | 0.08 to o.15 | NI |
| 1.00 TO 1.50 |
| Annealed | R | S | T | U | V | W | Y | |
|---|---|---|---|---|---|---|---|---|
| Ruling Section (mm) | 150 | 150 | 100 | 65 | 65 | 30 | 30 | 25 |
| Tensile Strength (MPa) | 680/720 | 690/850 | 770/930 | 850/1000 | 930/1080 | 1000/1160 | 1080/1240 | 1280 |
| Yield Stress (MPa) | 440/480 | 480 | 570 | 665 | 740 | 835 | 895 | 1050 |
| Elongation (% Min) | 22 | 15 | 15 | 13 | 12 | 12 | 10 | 10 |
| ISO V Impact (Joule) | 30 | 30 | 30 | 30 | 25 | 25 | 22 | 7 |
| Hardness (Brinell) | 190/210 | 201/255 | 223/277 | 248/302 | 269/321 | 293/341 | 311/375 | 363/415 |
| Proof Stress (0.2%) if required (MPa, Min) | 495 | 550 | 630 | 710 | 770 | 850 | 985 |
| Standard | CS EN-19 |
| UNS | – |
| WERKSTOFF NR. | 42Cr4Mo2 |
| BS | 709M40 |
| IS | 40Cr4Mo3 |
| JIS | – |
| EN | EN19 |
| SAE/AISI | 4140,4142 |
They offer high tensile strength, wear resistance, and excellent machinability, making them suitable for demanding applications.
They are widely used in automotive, engineering, and heavy machinery industries for components like gears, shafts, and bolts.
EN‑8 steel bars are general-purpose parts in engineering and manufacturing. They‘re used extensively for shafts, studs, pins, rollers, and couplings in industrial and automotive machinery. Their machinability and strength make them suitable for forging into axles, gears, and connecting rods. They find application in agricultural machinery, hydraulic equipment, and general fasteners. EN‑8 is easily hardened by nitriding, case-hardening, or induction for wear-resistant uses. From heavy machinery to machine tools, EN–8 presents a superb balance of toughness and affordability for a variety of structural and mechanical applications.
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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