Standard:	AISI, ASTM, DIN, JIS
Composition:	Ferrous Steel Scrap
Technique:	Forged
Shape:	Round/Square/Block/Ring
Surface Treatment:	Rough Machining or Black Surface
Special Use:	Roller Shaft

Basic Info.

Model NO.

forging steel

Application

Forged Steel Bar /Forged Shaft/Forging Ring

Forged Steel Bar Grade

AISI4140 42CrMo Scm440 1.7225 4150 4130

Forging Steel Bar Production Process

Forging+Annealing/Qt+Rough Machining

Hardness Range

20-32HRC

Supply Condition

Hot Forging

Transport Package

Wooden Box or Wooden Pallet

Specification

forging steel bar diameter: 200-800mm

Trademark

dajin

Origin

China

Production Capacity

3000

Product Description

Forged Alloy Steel Round Bar 4140 1.7225
Hot forging steel bar
aisi 4140 18CrNiMo7-6 hot forging forged mould alloy round steel
SCM440 SCM435 4130 4140 4145 forged bars

1.forged steel 4140 Chemical Composition and alternative grade (%):

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.Forged steel bar Available sizes:
Round: Dia. 16 - 1000mm
16mm-350mm 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)
10.Other grade we can supply
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