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50CrV4 spring steel is a tough, shock resisting, shallow hardening chromium vanadium steel having high fatigue and impact resistance in the heat treated condition. It is used extensively in gears, pinions, springs, shafts, axles, pins, bolts, etc., which require high modulus of resilience. The alloy was realised through conventional melt route of electric arc furnace (EAF) followed by ESR. The application of the alloy is limited to a section thickness of 15mm .
Hence obtaining optimum mechanical properties becomes a challenging task. In this study, the hardening as well as tempering operations were limited to 15mm thickness. The samples from the alloy were subjected to hardening at 860°C for 1.25 h. and oil quenching to room temperature followed by tempering at four different temperatures of 250, 300, 370 & 450°C for 3 h. each with oil quenching to room temperature. It was found that the alloy exhibited good combination of strength and ductility when tempered at 450°C. Microstructural study revealed the presence of fine tempered lath martensite along with the presence of a very small amount of delta ferrite along prior austenitic grain boundaries.
Pipe
Outer Diameter: 1mm-1500mm
Thickness: 0.1mm-50mm
Length: 1-12m
Surface: Annealed/Pickling/Polished
Shape: Round/Square/Hex
Technique: Hot Rolled/Cold Drawn
Sheet:
Thickness: 0.1mm-100mm
Width: 10-2000MM
Length: 1000mm-6000mm
Finish: NO.1, 2B, BA, NO.4, 8K, SB, Hairline, brush, polished, PVC film, Laser film, etc.
Bar:
Diameter: 5.0-500mm
Length: 1-12m
Surface: Black/Pickled/Polished/HL
Shape: Round/Square/Hex
50CrV4 spring steel is a tough, shock resisting, shallow hardening chromium vanadium steel having high fatigue and impact resistance in the heat treated condition. It is used extensively in gears, pinions, springs, shafts, axles, pins, bolts, etc., which require high modulus of resilience. The alloy was realised through conventional melt route of electric arc furnace (EAF) followed by ESR. The application of the alloy is limited to a section thickness of 15mm .
Hence obtaining optimum mechanical properties becomes a challenging task. In this study, the hardening as well as tempering operations were limited to 15mm thickness. The samples from the alloy were subjected to hardening at 860°C for 1.25 h. and oil quenching to room temperature followed by tempering at four different temperatures of 250, 300, 370 & 450°C for 3 h. each with oil quenching to room temperature. It was found that the alloy exhibited good combination of strength and ductility when tempered at 450°C. Microstructural study revealed the presence of fine tempered lath martensite along with the presence of a very small amount of delta ferrite along prior austenitic grain boundaries.
Pipe
Outer Diameter: 1mm-1500mm
Thickness: 0.1mm-50mm
Length: 1-12m
Surface: Annealed/Pickling/Polished
Shape: Round/Square/Hex
Technique: Hot Rolled/Cold Drawn
Sheet:
Thickness: 0.1mm-100mm
Width: 10-2000MM
Length: 1000mm-6000mm
Finish: NO.1, 2B, BA, NO.4, 8K, SB, Hairline, brush, polished, PVC film, Laser film, etc.
Bar:
Diameter: 5.0-500mm
Length: 1-12m
Surface: Black/Pickled/Polished/HL
Shape: Round/Square/Hex
