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Raian IonescuMaterial quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
High Strength 20Cr2Ni4A Alloy Steel Round Bar for Mold Steel Applications with OD 6-630mm
Product Details
| Diameter Range | OD 6-630mm | Carbon Content | 0.17-0.23% |
|---|---|---|---|
| Silicon Content | 0.17-0.37% | Manganese Content | 0.30-0.60% |
| Chromium Content | 1.25-1.65% | Nickel Content | 3.25-3.65% |
| Tensile Strength | 1483 Mpa | Yield Strength | 1292 Mpa |
| Elongation | 13% | Reduction Area | 57% |
| Hardness | 434HB | Impact Strength | 75 J/cm2 |
| Quenching Temperature | 880°C, 780°C | Tempering Temperature | 200°C |
| Surface Treatment | Polished | ||
| Highlight | High Strength Alloy Steel Round Bar,OD 6-630mm Structural Alloy Steel Bar,Mold Steel Application 20Cr2Ni4A Steel Bar |
||
Product Description
Steel Bar/Rod Alloy Structural Steel
Available grades: 20Cr2Ni4A, 12CrNi3A, 18Cr2Ni4WA, 40CrNiMoA, 20CrNiMoA, 4340, 34CrNiMo6, 17CrNiMo6, 8620, 18CrNiMo7-6, H13
20Cr2Ni4A Alloy Structural Steel
20Cr2Ni4A is a high-quality structural alloy steel known for its exceptional strength, toughness, and hardenability. This carburizing steel offers superior mechanical properties compared to standard alloy steels, making it ideal for demanding industrial applications.
Key Characteristics
- High strength and excellent toughness
- Superior hardenability properties
- General cutting and cold deformation plasticity
- Poor weldability characteristics
- Optimized carburizing process reduces surface residual austenite
Chemical Composition (%)
| Grade | C | Si | Mn | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 20Cr2Ni4A | 0.17-0.23 | 0.17-0.37 | 0.30-0.60 | ≤0.03 | ≤0.03 | 1.25-1.65 | 3.25-3.65 |
Mechanical Properties
| Grade | Tensile Strength (Mpa) min | Yield Strength (Mpa) min | Elongation (%) min | Reduction of Area (%) min | Hardness max | Impact Strength (J/cm²) min |
|---|---|---|---|---|---|---|
| 20Cr2Ni4A | 1483 | 1292 | 13 | 57 | 434HB | 75 |
Heat Treatment Process
- Quenching: First heating 880°C; Second heating 780°C; Coolant: Oil
- Tempering: Heating temperature 200°C; Coolant: Water, Air
- Forging performance: Heating temperature 1200°C, Initial forging 1150°C, Final forging above 850°C with slow cooling
Delivery Conditions
Available in heat treatment states (Normalizing, Annealing, or High Temperature Tempering) or non-heat treated condition as required.
Applications
20Cr2Ni4A is specifically designed for large cross-section carburized components requiring exceptional strength and toughness:
- Large gears and transmission systems
- High-strength shafts and bearings
- Conditioning components
- Oil drilling equipment components
- Mining claws and cone bodies
- Automotive and tractor engine parts
- Pinions, piston rings, ring gears, and crankshafts
Available Products
We supply comprehensive 20Cr2Ni4A forged products including:
- Forged round bars and square bars
- Custom forged shafts and blocks
- Complete size range from 12-380mm diameter
Product Images
Why Choose Our Steel Products
Quality Assurance
Materials sourced exclusively from government-owned steel mills with ISO 9001 certified quality management systems.
Timely Delivery
Priority processing for all orders with shortest possible lead times for both raw and finished materials.
Value-Added Services
Comprehensive support including metal cutting, sizing, machining, heat treatment, and custom sawing services.
Flexible Ordering
Orders of any size or length with unique inventory of specialty steels and fast shipping.
Contact us today for 20Cr2Ni4A forged round bars, square bars, shafts, and blocks. We provide quality special steel for all industrial applications with service that exceeds expectations.
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