Luois Metals distributes EN–9 high-carbon steel bars from Houston to the United States industry. EN–9 provides increased hardness and abrasion resistance, making it the suitable choice for heavy-duty applications. We procure from certified mills and process to ASTM and BS standards. Our EN–9 bars are available in different sizes and tempers, ready for machining or heat treatment. With technical assistance and quality control checks, we maintain consistent supply and technical assistance. Luois Metals assists customers across the tooling, automotive, and manufacturing industries by providing consistent carbon steel bars for long–term performance requirements and high–stress applications.
EN–9 carbon steel has 0.95–1.05% carbon, 0.30–0.50% manganese, 0.05–0.35% silicon. It develops high hardness and strength following heat treatment. Tensile strength is 900–1000 MPa; yield strength at 550 MPa, with elongation of about 8–12%. Typical Brinell hardness is 217–269 HB. The alloy is ideal for quenching and tempering to form wear-resistant structure. Accepting ASTM A681 and BS 970 standards, EN–9 provides consistent performance in wear conditions, without compromising on sufficient toughness.
| Grade | 070M55 / EN-9 |
|---|---|
| Specification | BS 970 1991 |
| Round Bar Size | Diameter: 3-~800mm |
| Square Bar size | 4 to 100mm |
| Flat Bar Size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Hex Bar Size | 2-100mm A/F |
| Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Angle Bar Size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| Section | 3.0 to 12.0mm thickness |
| Billet Size | 1/2″ to 495mm Diameter |
| Finish | Cold (bright) drawn, centreless ground,smooth turned, Rough Turned, Bright, peeled, hot rolled, hot rolled annealed, slit rolled edge, Polish, Grinding, Centreless Ground & Black |
| Tolerance | K9, K10, K11, K12, H8, H9, H10, H11, H12, H13, or as per clients’ requirements |
| Surface | Polished, Bright, Cold Drawn, Hot Rolled Pickled, Sand Blasting Finished, Hairline |
| Condition | Hardened & Tempered, Annealed |
| Technique | en9 Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rods |
| Processing | Bar cutting to 650mm |
| Form | en9 Welding Rod, Round, Round Rod, Rings, Hollow, Rod, T-Bar, Channel Bar, Flat Bar, Square, Blocks, Precision Ground Bar, Triangle, Rectangle, Hex (A/F), Threaded, Ingot, I/H Bar, Half Round Bar, Profiles, Billet, Forging etc. |
| EN9 / 070M55 Bars and Rods Conforms To NACE MR0175/ISO 15156 | |
| Grade | Cr | C | Ni | Si | S | Mn | P | Mo |
| EN – 9 | – | .50 – .60 | – | .05 – .35 | .040 MAX | .50 – .80 | .040 MAX | – |
| Heat Treatment | Condition Tons/SQ.inch | Tensile Stress RE MPA | RP0.2 MPA | A min on 5.65so | Impac | Hardness HB | Limited Ruling Section mm | |
| IZODFT.L.b | KCV Joules | |||||||
| Normalise | 45 | 700 | – | 12 | – | – | 201-255 | 63 |
| 39 | 600 | – | 13 | – | – | 170/223 | 250 | |
| R | 45/55 | 700/850 | 385 | 14 | – | – | 201/277 | 100 |
| S | 50/60 | 775/925 | 450 | 14 | – | – | 223/277 | 63 |
| T | 55/65 | 850/1000 | 555 | 12 | – | – | 248/302 | 19 |
| Standard | CS EN-9 |
| UNS | – |
| WERKSTOFF NR. | CK55 |
| BS | 070M55 |
| IS | C55 |
| JIS | – |
| EN | EN9 |
| SAE/AISI | 1055 |
Carbon Steel EN-9 is commonly used for manufacturing bolts, nuts, fasteners, and structural components in heavy-duty applications like automotive and construction industries.
EN-9 offers excellent tensile strength, wear resistance, and hardenability, making it suitable for components subjected to mechanical stresses and heavy-duty environments.
Yes, Carbon Steel EN-9 can be heat-treated to enhance its hardness and strength, making it versatile for various engineering applications.
EN‑9 bars are widely applied to produce gears, shafts, bearing races, cutting tools, punches, and shear blades. Because of its high hardness following heat treatment, it is best suited for high-wear industrial parts in metalworking, mining, and textile machines. EN‑9 also finds application in springs, mandrels, and fasteners of high strength. It provides support to applications in the automotive axles, dies, and reamers. Its ability to attain high wear resistance by quenching and tempering makes it appropriate for heavy-duty tools, forging equipment components, and machine parts exposed to abrasive 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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