SAE4140 Scm440 DIN1.7225 42CrMo4 Forged Alloy Steel Bar

• Type: Round
• Standard: AISI, ASTM, DIN, JIS
• Composition: Ferrous Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Hot Rolled or Cold Drawn
• Model NO.: steel bar
• Special Use: Cold Heading Steel, Free Cutting Steel
• Application: Structural Steel Bar
• Steel Bar Type: Round Steel Bar
• Grade: Alloy Steel Bar
• Main Grade: 4130 4145 4150 4140 Scm440 Scm435 Scm420 Scm415
• Supply Condition: Black Steel Rod
• Ready Stock: Yes
• Transport Package: Standard Export Packaging
• Specification: dia: 20-320mm
• Trademark: dajin
• Origin: China
• HS Code: 72283090
• Production Capacity: 30000

Product Description

Alloy Steel Round Bar 4140/Aisi 4140 Round Bar,1.7225 Steel,4140 Round Steel Bar
1.4140 42CrMo SCM440 steel rod 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

2.4140 alloy steel bar avaliable sizes

Commodity delivery condition	Dimensions
Hot rolled steel round bars	10mm to 350mm
Forged steel round bars	200mm to 800mm
Forged steel square block	200mm*200mm to 500mm*500mm
Forged steel flat block	(150mm to 500mm)*(200mm to 500mm)
Hot rolled and peeled or turned steel bright bars	20mm to 800mm

4.42CrMo4 steel bar delivery condition:
Hot rolled or forged, Peeled or black surface, annealed or QT.
4.4140 SCM440 steel bar applications:
Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
5.1.7225 42CrMo4 steel round bar 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