High-speed steel rods

High-speed steel rods


Sripad Steels, a Delhi-based company manufactures EM4 grade of high-speed steel rods. These steel rods are manufactured as per AISI M4, HS 6-5-4 standards. These rods have an excellent wear resistance with a hardness range of 61-65 HRC. Technical specifications: Max delivery hardness: As soft annealed: 280 HB Cold drawn: 320 HB Cold rolled: 320 HB Heat treatment: Soft-annealing: at 850-900? C for 3 hours followed by slow cooling at 10?C per hour down to 700?C then air cooling. Stress-relieving: at 600?C to 700?C for approximately 2 hours, slow cooling down to 500?C Hardening with pre-heating in 2 steps: at 450-500?C and 850-900?C, and austenitizing at 1100-1220?C 2 tempers at 560?C are recommended (maintain at least 1 hour each at temperature). Applications: Punches Dies Form tools Rolls Broach inserts

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