SCM440 SCM435 4130 4140 4145 forged bars forging shaft forged parts Forged Alloy Steel Round Bar 4140 1.7225 Hot forging steel bar Forged parts SCM440 SCM435 4130 4140 4145 forged bars 1.Chemical Composition (%):
Grade
C
Si
Mn
P
S
Cr
Mo
42CrMo4
0.38-0.45
0.17-0.37
0.40-0.70
≤0.035
≤0.035
0.90-1.20
0.15-0.25
1.7225
0.38-0.45
≤0.40
0.60-0.90
≤0.025
≤0.035
0.90-1.20
0.15-0.30
4140
0.38-0.43
0.15-0.35
0.75-1.00
≤0.035
≤0.040
0.80-1.10
0.15-0.25
2.Available sizes: Round: Dia. 1 6 - 1000mm 16 mm-3 5 0mm with hot rolled supply condition; 200-1000mm with forged supply condition 3. Delivery condition : Hot rolled or forged, Peeled or black surface, annealed or QT. 4.Applications: Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. 5.Heat Treatment: Soft annealing: heat to 680-720°C, cool slowly. Hardness after annealing: Max. 241 HB Hardening: 820 - 850 °C Normalizing temperature: 840-880°C Tempering: 540-680°C 6. Inspection: 100% Ultrasonic according to the test standards:SEP1921-84,GR.3 CLASS C/C 7. Packing situation: standard seaworthy packing or as customer required 8. Delivery time: 30 days after order confirmed 9. Process: EAF+LF+VD ( necessary) +UT+ Peeled(optional) +Turned (optional) + Heat Treatment (optional)