T-165/1/24, Near Gujar Gas,
T Block, MIDC, Bhosari,
Pune -
411026, Maharashtra
EN19 High Tensile Alloy Steel Round Bars (AISI 4140 / 42CrMo4)
Parva Bright Steels is a foremost dealer and stockist of EN19 High Tensile Alloy Steel Round Bars (conforming to BS 970 709M40 / AISI 4140 / DIN 42CrMo4 / IS 40Cr4Mo2) located in Bhosari MIDC, Pune. EN19 is a premium 1% chromium-molybdenum alloy steel celebrated across global engineering for its exceptional tensile strength, elevated yield limits, high fatigue endurance, and deep through-hardenability.
We supply EN19 bars in pre-hardened and tempered Condition "T" (850–1000 N/mm²) for components that require ready mechanical properties without post-machining heat treatment distortion, as well as in Soft Annealed condition for heavy machining, gear hobbing, and broaching. Available in Bright Turned/Peeled (ISO h9) and Hot Rolled / Forged Black rounds, backed by complete ultrasonic and chemical test reports.
Bright Turned Rounds
Diameter: 16 mm to 80 mm
ISO h9 tolerance
Peeled & turned bars ready for high-speed CNC precision turning.
Black Rolled Rounds
Diameter: 20 mm to 160 mm
Hot-rolled alloy bars for heavy bolts, tie rods & forging blanks.
Heavy Forged Rounds
Diameter: 160 mm to 350 mm
100% Ultrasonic tested for large heavy machinery spindles & shafts.
Pre-Hardened 'T' Blanks
28–32 HRC Ready Stock
Eliminates risk of post-machining distortion, cracking or quenching defects.
Technical Specifications & Material Data
| Standard & Equivalent Grades |
BS 970: 709M40 / 708M40 / EN19 / EN19C / EN19T AISI / SAE: 4140 / 4142 DIN / EN: 1.7225 / 42CrMo4 / EN 10083-3 IS: IS 5517 40Cr4Mo2 / 40CrMo28 JIS: SCM440 |
| Chemical Composition (%) |
• Carbon (C): 0.36 – 0.44% • Chromium (Cr): 0.90 – 1.20% • Molybdenum (Mo): 0.15 – 0.30% • Manganese (Mn): 0.60 – 0.90% • Silicon (Si): 0.15 – 0.35% • Sulphur (S): 0.035% Max • Phosphorus (P): 0.035% Max |
| Mechanical Properties (Condition "T" Hardened & Tempered) |
• Tensile Strength: 850 – 1000 N/mm² (MPa) • Yield Strength: Min 650 – 750 N/mm² • Elongation: 12 – 15% • Impact Strength (Izod / Charpy): Min 40 – 50 Joules • Hardness: 248 – 302 BHN (26 – 32 HRC) • Annealed Condition Hardness: Max 241 BHN |
| Geometric Profile | Round Bars (Bright Turned / Peeled, Hot Rolled Black, Heavy Forged) |
| Stock Size Range |
• Bright Turned Rounds: Ø 16 mm – 80 mm • Hot Rolled Black Rounds: Ø 20 mm – 160 mm • Forged Heavy Rounds: Ø 160 mm – 350 mm |
| Dimensional Tolerances | ISO h9, h10, h11 / DIN 174 (Bright Turned), DIN 1013 (Black Rolled) |
| Supply Condition | Hardened & Tempered (Condition T / U), Soft Annealed, or Normalized |
| Testing & Inspection | 100% Spectro Analysis, Ultrasonic Tested (SEP 1921 Class C/c / ASTM A388), Hardness Verified |
| Supply Length | Standard 3.0 to 6.0 meters, or precision band-saw cut lengths and discs |
| Quality Certification | Mill Test Certificate (EN 10204 3.1) with full heat chemical, mechanical & heat treat response |
| Warehouse Location | Ready Stock at Parva Bright Steels, T-Block MIDC Bhosari, Pune |
Key Features & Industrial Applications
- High-Tensile Strength & Toughness: 850–1000 MPa tensile strength engineered to resist catastrophic mechanical shock, high torsion, and cyclic fatigue.
- Uniform Deep Through-Hardenability: Chromium and molybdenum alloy content guarantees uniform hardness and microstructural consistency through heavy cross-sections.
- Pre-Hardened "Condition T" Convenience: Eliminates downstream heat-treating costs, lead time, and post-quench dimensional warping for precision component makers.
- Typical Applications: High-tensile fasteners, foundation bolts, grade 10.9/12.9 studs, automotive crankshafts, steering arms, connecting rods, machine tool spindles, torsion bars, drill collars, oil & gas valve shafts, hydraulic cylinder rods, and heavy gears.
- T-165/1/24, Near Gujar Gas, T Block, MIDC Bhosari, Pune
- info@parvabrightsteel.com
- Owner (Bhavik Oswal): 7588254871