4145 Forged Steel Roller Shaft Components

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB
• Composition: Alloy Steel or Carbon Steel
• Technique: Forged
• Shape: Bar
• Surface Treatment: Rough Machining or Black Surface
• Model NO.: forged parts
• Special Use: Cold Heading Steel, Mold Steel
• Application: Structural Steel Bar
• Ready Stock Grade: 1045 4140 Forged Steel Bar
• Delivery Time of New Goods: 30days
• Heat Treatment: Qt/Normalized/Annealing
• Rough Machining Diameter Tolerance: -0/+0.5mm
• Transport Package: Seaworthy Packaging
• Specification: 200mm-1000mm
• Trademark: Shandong
• Origin: China
• Production Capacity: 5000tons

Product Description

Our extensive range encompasses SCM440, SCM435, 4130, 4140, and 4145 forged bars, along with expertly crafted forging shafts and parts that meet the highest industry standards.
High-Performance Forged Alloy Steel Round Bar 4140: Precision engineered for optimal strength and durability.
Steel Grade: 1.7225
Premium Hot Forging Steel Bar: Built to withstand intense applications.
Superior Quality Forged Parts: Crafted to perfection for various industrial needs.
Our product line includes SCM440, SCM435, 4130, 4140, and 4145 forged bars, designed for excellence.
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: Diameter 1
6
- 1000mm
16
mm-3
5
0mm in hot rolled supply condition;
200-1000mm in forged supply condition
3.
Delivery Condition: Hot rolled or forged, available with either a peeled or black surface, and can be annealed or QT as needed.
4.Applications:
Ideal for both statically and dynamically stressed components in vehicles, engines, and machinery. Perfect for larger cross-sections like crankshafts and gears.
5.Heat Treatment:
Soft annealing: Heat to 680-720°C and cool slowly.
Maximum Hardness after Annealing: 241 HB
Hardening: Achieve optimal performance at 820 - 850 °C.
Normalizing Temperature Range: 840-880°C
Tempering: 540-680°C for enhanced material properties.
6. Inspection: 100% Ultrasonic Inspection conducted in accordance with SEP1921-84, GR.3 CLASS C/C standards.
7. Packing Situation: Standard seaworthy packing or customized packaging as per customer requirements.
8. Delivery Time: 30 days post order confirmation.
9. Process: EAF+LF+VD (as necessary) +UT+ Peeled (optional) +Turned (optional) + Heat Treatment (optional).

Keywords: forged steel bar, forging parts, forging rings, 4140 forged steel bar, forged round bars, hot forging, steel forging, round bar 4140, 42CrMo4 steel bar, and more.