This article references the authoritative source “Encyclopedia of Metal Materials” to provide a detailed analysis of the performance characteristics and processing key points of Q235. Structural steel is one of the most commonly used materials in mechanical manufacturing and construction engineering.
1. Basic Information of Q235
Q235 is a commonly used structural steel material with good comprehensive mechanical properties and processability.
2. Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.42-0.50 |
| Silicon (Si) | 0.17-0.37 |
| Manganese (Mn) | 0.50-0.80 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.035 |
3. Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥600 MPa |
| Yield Strength | ≥355 MPa |
| Elongation | ≥16% |
| Hardness | ≤217 HB |
4. Heat Treatment Properties
Heat treatment characteristics of Q235:
- 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)
- Engineering Machinery (connectors, fasteners)
- Mold Manufacturing (mold bases, templates)
- CNC Machined Parts (precision parts, structural components)
6. CNC Machining Performance
CNC machining characteristics of Q235:
- Cutting Performance: Good
- Cutting Speed: 100-150 m/min
- Tool Selection: Carbide tools
- Cooling: Adequate cooling required
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 Q235 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
Free Quote available, feel free to contact us!
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