This article references the authoritative source “Encyclopedia of Metal Materials” to provide a detailed analysis of the performance characteristics and processing points of 38CrMoAl. Structural steel is one of the most commonly used materials in mechanical manufacturing and construction engineering.
1. Basic Information of 38CrMoAl
38CrMoAl is a commonly used structural steel material with good comprehensive mechanical properties and machinability.
2. Chemical Composition (GB/T 3077)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.35-0.42 |
| Silicon (Si) | 0.20-0.45 |
| Manganese (Mn) | 0.30-0.60 |
| Chromium (Cr) | 1.35-1.65 |
| Molybdenum (Mo) | 0.15-0.25 |
| Aluminum (Al) | 0.70-1.10 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.035 |
3. Mechanical Properties (Quenched and Tempered)
| Property | Value | Remarks |
|---|---|---|
| Tensile Strength Rm | ≥980 MPa | — |
| Yield Strength Rp0.2 | ≥835 MPa | — |
| Elongation A | ≥14% | — |
| Reduction of Area Z | ≥50% | — |
| Impact Energy Akv | ≥71 J | — |
| Hardness (Quenched and Tempered) | ≤229 HB | After quenching and tempering |
| Nitrided Layer Hardness | ≥900 HV | Surface after nitriding |
4. Heat Treatment Properties
Heat treatment characteristics of 38CrMoAl:
- Quenching and Tempering: Quenching + High-temperature tempering
- Quenching Temperature: 820-860°C
- Tempering Temperature: 500-600°C
- Hardness after Quenching and Tempering: 25-32 HRC
5. Typical Applications
- Mechanical manufacturing (shafts, gears)
- Automotive industry (transmission parts)
- Construction machinery (connectors, fasteners)
- Mold manufacturing (mold bases, plates)
- CNC machined parts (precision parts, structural components)
6. CNC Machining Performance
CNC machining characteristics of 38CrMoAl:
- Cutting Performance: Good
- Cutting Speed: 100-150 m/min
- Tool Selection: Carbide tools
- Cooling: Requires sufficient cooling
7. Procurement Guide
Market Price Reference:
- Plate: 6-10 RMB/kg
- Bar: 7-12 RMB/kg
- Tube: 8-15 RMB/kg
8. Our Services
Dongguan Stirling Metal Products Co., Ltd. specializes in providing 38CrMoAl material + CNC machining One-Stop Service:
- ✅ Material Procurement: Genuine product guarantee, complete material certificates
- ✅ CNC Machining: Precision ±0.01mm, smooth surface finish
- ✅ Heat Treatment: Quenching and tempering, quenching, tempering
- ✅ Sample Production: Fast delivery in 3-5 days
- ✅ Batch Production: Delivery time of 7-15 days
For a Free Quote consultation, feel free to contact us!
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