T-165/1/24, Near Gujar Gas,
T Block, MIDC, Bhosari,
Pune -
411026, Maharashtra
EN8 Black Flats, Squares & Rounds
Parva Bright Steels is a foremost dealer and stockist of EN8 Black Steel Bars (conforming to BS 970 080M40 / AISI 1045 / DIN C45 / IS 45C8) based in Bhosari MIDC, Pune. Supplied in hot-rolled or forged condition with natural protective mill scale, EN8 Black is a premier medium carbon unalloyed engineering steel delivering high tensile strength, excellent toughness, and uniform response to heat treatment.
EN8 Black is significantly stronger than mild steel and offers exceptional machinability once the mill skin is faced off. It is widely chosen by forging units, tool and die makers, CNC machine shops, and heavy engineering fabricators for producing heavy-duty transmission shafts, gears, axle spindles, connecting rods, die blocks, and guide columns across Pune and Pimpri-Chinchwad manufacturing sectors.
EN8 Black Rounds
Diameter: 20 mm to 350 mm
Hot-rolled & forged rounds for heavy shafts, rollers, crankshafts & pinions.
EN8 Black Flats
Width: 25 mm to 250 mm
Thickness: 10 mm to 80 mm
Heavy plate sections for press tool dies, slides & wear blocks.
EN8 Black Squares
Size: 20 mm × 20 mm to 200 mm × 200 mm
High sectional rigidity for guide columns, forging blocks & keys.
Custom Cut Billets
Band-saw cutting service
Precision cut discs and blocks ready for drop forging or CNC turning.
Technical Specifications & Material Data
| Standard & Equivalent Grades |
BS 970: 080M40 / EN8 / EN8M (Free Machining) AISI / SAE: 1040 / 1045 DIN / EN: 1.0503 / 1.1191 / C45 / CK45 / EN 10083-2 IS: IS 5517 45C8 / 40C8 JIS: S45C |
| Chemical Composition (%) |
• Carbon (C): 0.36 – 0.44% • Manganese (Mn): 0.60 – 1.00% • Silicon (Si): 0.10 – 0.40% • Sulphur (S): 0.050% Max (EN8M: 0.10 – 0.20%) • Phosphorus (P): 0.050% Max |
| Mechanical Properties (As-Rolled / Normalized) |
• Tensile Strength: 550 – 700 MPa (N/mm²) • Yield Strength: Min 280 – 350 MPa • Elongation: 16 – 20% • Hardness: 170 – 210 BHN (Through-hardened / Induction up to 50–55 HRC) |
| Geometric Profiles | Hot-Rolled & Forged Black Flats, Rounds, Squares |
| Stock Size Range |
• Rounds: Ø 20 mm – 350 mm (Rolled ≤ 130mm, Forged 130mm–350mm) • Flats: Width 25 mm – 250 mm | Thickness 10 mm – 80 mm • Squares: 20 mm × 20 mm – 200 mm × 200 mm |
| Dimensional Tolerances | As per DIN 1013 / EN 10060 (Rounds), DIN 1017 (Flats), DIN 1014 (Squares) |
| Surface Condition | As-rolled black mill scale finish, clean end-cuts, deburred edges |
| Supply Condition | As Rolled, Normalized, or Soft Annealed (for intricate milling/broaching) |
| Supply Length | Standard 5.5 to 6.2 meters, or tailored band-saw cut billet pieces |
| Quality Certification | 100% Prime Mill Test Certificate (EN 10204 3.1) with chemical and ultrasonic test reports |
| Warehouse Location | T-Block MIDC Bhosari, Pune with ready stock for instant truck loading |
Key Features & Industrial Applications
- Cost-Effective Engineering Steel: Delivers high structural strength and wear resistance at a fraction of the cost of alloy steels.
- Versatile Heat Treatment: Readily normalized to refine grain structure, quenched and tempered for core toughness, or induction surface hardened to 50–55 HRC.
- Excellent Machining Performance: Excellent chip formation and surface finish when turned, bored, milled, or drilled after initial skin pass.
- Typical Applications: Automotive crankshafts, axle shafts, steering spindles, conveyor drive rollers, press tool bolster plates, heavy machine columns, gears, coupling hubs, sprockets, and drop forgings.
- T-165/1/24, Near Gujar Gas, T Block, MIDC Bhosari, Pune
- info@parvabrightsteel.com
- Owner (Bhavik Oswal): 7588254871