20CrNiMo5 / 1.6523 Carburizing Gear Steel
Low-Carbon Ni-Cr-Mo Alloy Steel for Gears, Shafts, Sprockets and Heavy-Duty Transmission Components
It combines excellent fatigue strength, high surface hardness after carburizing and a tough impact-resistant core for automotive gear systems, industrial reducers and high-load transmission parts.
Typical Specifications
| Grade | Steel grade |
|---|---|
| Product | Plate / bar / block |
| Condition | Confirm by order |
| Standard | Confirm by required standard |
Key Features
Typical Applications
WhatsApp / Email / RFQ
Send grade, size, quantity and destination port. Our sales team will check stock, cutting service, weight and delivery time.
Supply Information
Equivalent Grades
Equivalent standards help buyers find the same material by AISI, DIN/W.Nr., Japan JIS, Russia GOST and China GB names.
Key Properties
Properties are purchasing-oriented and should be confirmed against the required delivery condition.
Typical Chemical Composition
Typical Applications
Available Service
Carburizing Route
Forging → Normalizing → Rough machining → Carburizing → Quenching → Low-temperature tempering
- After carburizing and quenching, surface hardness is typically 58-62 HRC.
- Core hardness is typically 30-45 HRC, giving a hard wear-resistant surface with a tough core.
- This combination is important for gears, reducer parts and heavy-duty transmission components.
20CrNiMo5 vs 20MnCr5
Compared with 20MnCr5, 20CrNiMo5 costs more but gives better toughness, load capacity and fatigue resistance.
- Choose 20CrNiMo5 for heavy-duty gears, wind power gear components and high-end reducer parts.
- Ni improves toughness and impact resistance, Cr improves hardenability and wear resistance, and Mo reduces temper brittleness while improving strength.
- Use 8620 only as a close American reference; it is not an identical composition match.
Estimate Weight Before Inquiry
Calculate plate, round bar, flat bar or block weight, then send the result with your RFQ.
Calculation is for quotation reference only. Actual weight may vary by tolerance, cutting allowance and surface condition.
20CrNiMo5 / 1.6523 Steel Supply Capability
Haoyuan supplies 20CrNiMo5 / 1.6523 carburizing steel in forged bars, round bars and blocks for machining and gear manufacturing applications.
Available Forms
- Round Bar
- Forged Round Bar
- Forged Block
- Cut-to-Size Block
Typical Applications
- Transmission Gears
- Gear Shafts
- Sprockets
- Differential Components
- Industrial Reducers
- Heavy-Duty Mechanical Parts