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Engine Valve Steels

MANUFACTURING ROUTE OF ENGINE VALVE STEELS

Martensitic Grades

Austenitic Grades

Inspection and Testing

  • Surface Quality by M.P.I/ Zyglo/ECT
  • Internal Soundness by Ultrasonic Testing
  • Dimension & Length Controls
  • Metallurgical Testing (Hardness, Microstructure. Inclusion, Grain Size etc.)

International Standards of Valve Steels

Chemical Composition

Product Details

Size Range :
Bright BarsDia 5.00 mm to 100 mm
Hot Rolled Annealed Wire RodDia 5.50 mm to 38 mm
Hot Rol. Annealed BarsDia 15 mm to 160 mm
Standard Length4000+50/-00 mm or as per Customer Specified Length
Supply Conditions :
Dimensional Tolerance: ISO h9, h11, +0.05/-0.00, +0.05/-0.05, + 0.10. Black Bar as per IS-3739
Martensitic GradesHot Rolled, Annealed or Hardened &Tempered
Drawn &Ground, Peeled &Ground and Black bar
Austenitic GradesHot Rolled, Solution Annealed, Peeled &Ground and Black Bar

Mechanical Properties

Grade Condition Yield Strength N/mm2 Tensile Strength N/mm2 % Elongation min % Reduction in Area min HRC
EN-52/X45CrSi9-3 H & T 700 900-1100 14 40 25-35
SUH-11 H &T 700 900-1100 14 40 25-35
SUH-3 H &T 700 900-1100 14 40 25-35
X85CrMoV18-2 H &T 800 1000-1200 7 12 25-35
21-2N Solution Annealed 550 900-1150 8 10 30-40
21-4N Solution Annealed 580 950-1200 8 10 30-40
21-12N Solution Annealed 400 800-1200 35 45 23-25
21-43N Solution Annealed 580 950-1150 10 12 30 min
23-8N Solution Annealed 550 850-1100 25 30 26 min
Inconel 751 Solution Annealed 630-850 1100-1300 12 20 32-40