EN8/EN8D Black Round Bars Dia 16mm to 200mm

0.68$ | 0.80$ incl. GST per Kg

Our EN8/EN8D Hot Rolled Bars, also known as Black Bars, are engineered to deliver superior strength and reliability for a wide range of industrial applications. Manufactured using premium-grade carbon steel, these bars offer excellent tensile strength, wear resistance, and machinability, making them ideal for components subjected to high stress, such as shafts, gears, and fasteners.

These bars are meticulously rolled under strict quality control processes to ensure dimensional accuracy and consistent performance. Whether you require material for heavy-duty machinery, automotive parts, or general engineering applications, our EN8/EN8D Hot Rolled Bars provide the durability and performance needed for demanding operations.

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EN8 & EN8D Hot Rolled Bars / Black Bars - Delivery Conditions

Section Round
Size Range Dia 16mm to 200mm
Condition Hot Rolled
Tolerance offered As per EN8 / EN8D specifications
Standard Hot Rolled Bars to generally conform to EN8 / EN8D
Straightness As per IS:1852 where applicable
Ovality Not specifically controlled, but within tolerance limits
Lengths offered In full lengths up to 12000 mm / 40ft. With prior agreement, fixed/custom lengths can also be offered.
Straightened No, as rolled condition.
Polished No
End Cut Condition Generally supplied with as-rolled ends. Special end cuts or deburred ends can be offered upon request.
Colour Coding Both ends are colour coded for easy identification. Buyer's colours can also be applied.
Rust Preventive Hot Rolled Bars can be supplied with rust preventive coating upon request
Packing Loose or Bundled with tie strings or wire and/or packed in chosen packing material
Test Report Test Certificates for Chemical, Mechanical, and Physical properties as per agreement
Typical Mechanical Properties
  • Tensile Strength: 550 - 700 MPa (EN8) / 530 - 680 MPa (EN8D)
  • Yield Strength: 280 MPa min (EN8) / 270 MPa min (EN8D)
  • Elongation: 16% min
Chemical Composition
  • Carbon (C): 0.35% - 0.45% (EN8) / 0.36% - 0.44% (EN8D)
  • Manganese (Mn): 0.60% - 1.00% (EN8) / 0.60% - 0.90% (EN8D)
  • Phosphorus (P): 0.05% max
  • Sulfur (S): 0.05% max
  • Silicon (Si): 0.10% - 0.40% (EN8) / 0.10% - 0.35% (EN8D)
  • Iron (Fe): Balance
Applications EN8 & EN8D are widely used in general engineering, automotive, and structural applications, particularly in making shafts, gears, bolts, studs, and other load-bearing components.
Melting & Refining Method EN8 & EN8D are generally produced using Basic Oxygen Furnace (BOF) or Electric Arc Furnace (EAF) methods, with secondary refining like Ladle Refining Furnace (LRF) to maintain consistent quality.
Rolling Route The material is produced via the Continuous Casting route, where molten steel is cast into billets and then hot rolled into desired bar sizes.
Quality Control Strict quality control processes are implemented, including chemical analysis, mechanical testing, and dimensional checks to ensure product quality.
Surface Condition Hot Rolled Bars may have a scale-covered surface, which can be removed through pickling, shot blasting, or machining as per customer requirements.
Traceability Each batch is fully traceable back to its heat number, ensuring documentation of all chemical and mechanical properties.

Equivalent / similar standards 

  • British Standard (BS): BS 970 080M40, BS 970 080A42
  • Indian Standard (IS): IS 1570 C40, IS 1570 C45, IS 5517 40C8
  • American (ASTM): ASTM A29/A29M Grade 1040, ASTM A108 Grade 1040
  • European (EN): EN 10083-2 C40E, EN 10277 C45, EN 10083-1 C45E
  • Japanese (JIS): JIS G4051 S40C, JIS G4051 S45C
  • German (DIN): DIN 17200 C40, DIN 17200 C45, DIN 1652-2 CK40
  • French (AFNOR): AFNOR 35-552 C40, AFNOR C45E, AFNOR XC42
  • Italian (UNI): UNI C40, UNI C45, UNI C45E
  • Russian (GOST): GOST 1050 Grade 40, GOST 1050 Grade 45, GOST 8732 Grade 40
  • Korean (KS): KS D 3752 SM45C, KS D 3520 S45C
  • Chinese (GB): GB/T 699 45#, GB 45#
  • Canadian (CSA): CSA G40.21 40W
  • Australian (AS/NZS): AS 1443-1994 Grade 1040, AS 1444-2007 Grade 1045
  • Swedish (SS): SS 1650 1674, SS 1672 S45C
  • Turkish (TS): TS 1051 C40, TS 1051 C45
  • Brazilian (NBR): NBR 7007 SAE 1040, NBR 7007 SAE 1045
  • South African (SABS): SABS 1195 Grade C40, SABS 1195 Grade C45
  • Mexican (NMX): NMX-B-506-C SAE 1040, NMX-B-506-C SAE 1045
  • Finnish (SFS): SFS 2357 C40E, SFS 2371 SS45
  • Spanish (UNE): UNE 36011 C40E, UNE 36011 C45E
  • Czech (ČSN): ČSN 12050 12045, ČSN 41 1203 12050
  • ISO: ISO 683-1 C45E, ISO 683-1 C40E
  • MIL (Military Standard): MIL-S-22698C Grade C1040, MIL-S-22698C Grade C1045
  • Argentinian (IRAM): IRAM 1520 SAE 1040, IRAM 1520 SAE 1045
  • Polish (PN): PN 74/H-84019 C45, PN-EN 10083-1 C40E
  • Norwegian (NS): NS 11-212/45, NS 11-213/40
  • Romanian (STAS): STAS 3611/89 C45, STAS 3611/89 C40
  • Belgian (NBN): NBN 35-551 C40, NBN 35-552 C45
  • Dutch (NEN): NEN 1778 C45, NEN 1777 C40
  • Austrian (ÖNORM): ÖNORM M4125 C40, ÖNORM M4125 C45
  • Indonesian (SNI): SNI 07-2761 Grade 1040, SNI 07-2762 Grade 1045
  • Singapore (SS): SS 400 C40, SS 402 C45
  • Malaysian (MS): MS 1804 Grade 40, MS 2025 C45
  • Philippines (PNS): PNS 06-153 C40, PNS 07-156 C45
  • Thai (TIS): TIS 1227 C40, TIS 1340 C45
  • Pakistani (PS): PS 1610 C40, PS 2300 C45
  •  
Sizes / Dia

16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 25 mm, 26 mm, 28 mm, 30 mm, 32 mm, 33.5 mm, 36 mm, 38 mm, 40 mm, 42 mm, 45 mm, 46.5 mm, 48 mm, 50 mm, 52 mm, 53 mm, 56 mm, 58 mm, 60 mm, 63 mm, 65 mm, 66 mm, 67 mm, 68 mm, 70 mm, 71 mm, 75 mm, 77 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm
Rolling Route

Continuous Cast, Billet
Melting / Refining

BOF, EAF – VD Route
Make

RINL – VSP, Jindal, TATA, SAIL

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