ASTM4140 SCM440 42CrMo alloy steel round bar

1. Grade:

America Standard: AISI4140

International Standard: 42CrMo4

Japan Standard: SCM440

Germany Standard: 42CrMo4

2.Available sizes:

Dia:10-320mm
Length:3-12m as customer's request
 

3.Delivery condition: Hot rolled or forged, Peeled(bright 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. Production Line: Blast Furnace Melton Iron → EAF(EBT/BOV) → LF → VD → Molten Steel → Continuous Casting → Hot Rolling/Forged → Heat Treatment → Further Processing(Peeling/Turning)