Discover the excellence of SCM440, SCM435, 4130, 4140, and 4145 forged bars, expertly crafted into forging shafts and intricate forged parts.
Top-Grade Forged Alloy Steel Round Bar 4140 for unparalleled strength and durability.
1.7225 Alloy Steel - Superior quality for demanding applications.
Hot Forging Steel Bar - Precision engineered for exceptional performance.
Premium Forged Parts - Crafted for reliability and excellence.
SCM440, SCM435, 4130, 4140, 4145 Forged Bars - Designed for peak performance.
1. Chemical Composition (%): Meticulously balanced for optimal performance.
| 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: Tailored dimensions to meet diverse requirements.
Round: Diameter options starting from 1
6 mm,
extending up to 1000 mm,
with precision crafting from 16
mm to 3
5 mm,
available in hot rolled supply condition.
200-1000mm with a robust forged supply condition.
3. Delivery Condition:
Choose from Hot Rolled or Forged, Peeled or Black Surface, Annealed or QT. Ensuring sophisticated surfaces and treatments.
4. Applications:
Engineered for statically and dynamically stressed components in vehicles, engines, and machinery. Ideal for larger cross-sections, crankshafts, and gears.
5. Heat Treatment:
Soft Annealing: Heat to 680-720°C, then cool slowly to achieve desired properties.
Hardness after Annealing: Maximum of 241 HB for optimal resilience.
Hardening: Achieve toughness with temperatures between 820-850 °C.
Normalizing Temperature: Consistently at 840-880°C for structural integrity.
Tempering: Refine with a range of 540-680°C for enhanced durability.
6. Inspection: 100% Ultrasonic Testing adhering to SEP1921-84, GR.3 CLASS C/C standards, ensuring defect-free quality.
7. Packing Situation: Standard seaworthy packing or customized as per customer requirements, guaranteeing safe delivery.
8. Delivery Time: Efficiently managed, ensuring delivery within 30 days post order confirmation. Your satisfaction is our priority.
9. Process: Meticulous steps including EAF+LF+VD (necessary) +UT+ Peeled (optional) +Turned (optional) + Heat Treatment (optional) for superior products. Ensuring excellence at every stage.
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. Embrace quality and precision with Shandong Dajin Metal Material Co., Ltd.
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