AISI 4140 4150 4130 Forging Block Forged Alloy Steel Bar

• Type: Round Bar, Square Bar, Block, Ring
• Standard: AISI, ASTM, DIN, JIS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Round/Square/Block/Ring
• Surface Treatment: Rough Machining or Black Surface
• Model NO.: alloy steel bar
• Special Use: Roller Shaft
• 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
• Ut Standard: Sep 1921-84 D/D or ASTM A388
• Non-Metallic Inclusiton: ASTM E45
• Heat Treatment: Annealed, Qt
• 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
4140 Forged steel round bar,4145 forged steel,4340 a105 forged steel,a105 forged steel fittings,astm a105 forged steel,best forged steel anvil,cola 4340 forged steel crankshafts,forged,steel a105,forged steel aisi 4140 properties,4140 forged steel,4140 forged steel,crankshaft position sensor location,4140 forged steel eye bolt,4140 forged steel grades,cold,hammer-forged 4140 chrome-moly steel,forged steel aisi 4140,forged high strength,4140 alloy steel,forging 4140 tool steel,SCM440 forged steel bar,42CrMo4 forged round bar,4150 forged steel,forged parts,alloy forging,hot forging,
Our advantage

• Computer-Aided Design (CAD) System
• Multiple Wire EDM (Electric Discharge Machining) Machines
• Plunge EDM (Solid Electrode Electric Discharge Machining)
• Complete Manufacturing of Carbide Dies
• Contoured Straightener Rolls
• Profile Shape Shear Knives
• Fast Tooling Changes and Modifications
• An Advanced Quality Planning System Used for Prototyping