EN8 Bright Rounds, Hexagons and Squares - Parva Bright Steels Pune

EN8 Bright Rounds, Hexagons & Squares

Parva Bright Steels is a foremost stockist and dealer of premium EN8 Bright Steel Bars (conforming to BS 970 080M40 / AISI 1045 / DIN C45 / IS 45C8) in Bhosari MIDC, Pune. EN8 is an unalloyed medium carbon engineering steel offering substantially higher tensile strength, hardness, and wear endurance compared to conventional mild steel.

Through precision cold drawing and centerless turning/peeling, our EN8 bright bars achieve tight dimensional tolerances (ISO h9, h10, h11), exceptional straightness, and a mirror-like scale-free finish. EN8 can be readily induction or flame surface-hardened to achieve 50–55 HRC, making it the preferred choice for heavy-duty shafts, automotive axles, hydraulic rams, gears, and precision turned fasteners.

EN8 Bright Rounds

Diameter: 6 mm to 100 mm
Tolerances: ISO h9 / h11
For precision motor shafts, axles, pins & CNC turned parts.

EN8 Bright Hexagons

Across Flats: 10 mm to 65 mm
ISO h11 accuracy
For high-tensile nuts, bolts & hydraulic adapters.

EN8 Bright Squares

Size: 10 mm × 10 mm to 75 mm × 75 mm
High torsional stiffness for machine keys, keyways & slides.

Custom Cut Blanks

Band-saw cut pieces
Clean burr-free cuts to required lengths for batch production.

Technical Specifications & Material Data
Standard & Equivalent Grades BS 970: 080M40 / EN8 / EN8D
AISI / SAE: 1040 / 1045
DIN / EN: 1.1191 / C45 / CK45 / EN 10083-2
IS: IS 5517 45C8 / 40C8
JIS: S45C
Chemical Composition (%) • Carbon (C): 0.36 – 0.44% (EN8D: 0.40 – 0.45%)
• Manganese (Mn): 0.60 – 1.00%
• Silicon (Si): 0.10 – 0.40%
• Sulphur (S): 0.050% Max
• Phosphorus (P): 0.050% Max
Mechanical Properties (Cold Drawn) • Tensile Strength: 650 – 850 N/mm² (MPa)
• Yield Strength: 450 – 560 N/mm² (MPa)
• Elongation: 12 – 16%
• Hardness: 180 – 225 BHN (Induction hardenable to 50–55 HRC)
Geometric Profiles Bright Rounds, Hexagons, Squares (Cold Drawn / Centerless Turned / Peeled)
Stock Size Range • Rounds: Ø 6 mm – 100 mm
• Hexagons: 10 mm – 65 mm (Across Flats)
• Squares: 10 mm × 10 mm – 75 mm × 75 mm
Dimensional Tolerances ISO h9, h10, h11 / DIN 174 (Precision cold drawn & turned limits)
Surface Condition Smooth, scale-free bright metallic finish (Ra ≤ 1.6 µm), chamfered bar ends available
Supply Condition Cold Drawn, Centerless Turned / Peeled, Annealed, or Normalized
Supply Length Standard 3.0 to 6.0 meters, or custom band-saw cut pieces
Quality Certification 100% Prime Quality with Mill Test Certificate (EN 10204 3.1) and heat number traceability
Warehouse Location Ready Stock at T-Block, MIDC Bhosari, Pune for same-day dispatch

Key Features & Industrial Applications

  • Superior Strength & Toughness: 35–45% higher tensile strength than standard mild steel, offering reliable resistance to bending and cyclic fatigue.
  • Induction & Flame Hardenable: Readily heat-treatable on wear zones to 50–55 HRC while retaining a tough shock-resistant core.
  • Optimized Machinability: Scale-free bright finish allows direct collet feeding on CNC and automatic lathes, drastically cutting machining cycles and tool wear.
  • Typical Applications: Automotive transmission shafts, crankshafts, steering knuckles, motor spindles, hydraulic ram cylinders, machine keys, high-tensile studs, coupling bolts, gears, and agricultural equipment parts.
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