spring steel round bars
hot rolled and forged or cold drawing
dimension:10-800mm
Steel Grade | Heat treatment | Mechanical Properties | Delivery state | Hardness: HBW<= | |||||||||||
Quenching Temperature °C | Temper temperature °C | Σb/MPA | Σs/MPa | Δ5(10%) | Ψ(%) | ||||||||||
≥ | |||||||||||||||
55Cr3 (55CrMnA) | 830-860oil | 460-510 | 1225 | (1080) | 9 | 20 | Hot rolled | 321 | |||||||
Chemical Composition | C:0.52-0.60 Si:0.17-0.37 Mn:0.65-0.95 P:<=0.025 S:<=0.025 Cr:0.65-0.95 Ni:<=0.35 | ||||||||||||||
55Cr3 | |||||||||||||||
C:0.52-0.59 Si:<=0.40 Mn:0.70-1.00 P:<=0.025 S:<=0.025 Cr:0.70-1.00 | |||||||||||||||
50CrV4 (50CrVA) | 850 oil | 500 | 1275 | 1130 | 10 | 40 | Hot rolled hot treatment | 321 | |||||||
Chemical Composition | C:0.46-0.54 Si:0.17-0.37 Mn:0.50-0.80 P:<=0.025 S:<=0.025 Cr:0.80-1.00 Ni:<=0.35 V:0.10-0.20 | ||||||||||||||
50CrV4 | |||||||||||||||
C:0.47-0.55 Si:<=0.40 Mn:0.70-1.10 P:<=0.035 S:<=0.035 Cr:0.90-1.20 V:0.10-0.25 | |||||||||||||||
Process: | EAF + LF + VD + Forged + Heat Treatment (optional) |
Diameter: | 20mm-1000mm |
Length: | 3000mm-12000mm Straightness: 3mm/M max |
Heat treatment: | Normalized / Annealed / Quenched / tempered |
Delivery condition: | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
Technical Data: | According to the customer's requirement of Chemical Composition, PhysicalProperties and Mechanical Testing |
Test: | Ultrasonic test according to SEP 1921-84 G3 C/c |
Delivery time: | 25 days after advanced payment |
Payment: | 30% advance by T\T; Balance pay before the shipment against shipping documentsor irrevocable LC at sight |
ceritificate
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