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High-strength TC bolts for structural steel joints are designed to meet stringent performance and safety requirements. These fasteners are commonly used in critical applications where strength, durability, and reliability are essential.
1. **Standards**: American standard (ASTM)
2. **Materials**: Mild steel (carbon steel)
3. **Grade**: 10.9s
4. **Other Available Standards for TC Bolts**: ASTM F2280 (A490TC), GB3632, ASTM F1852 (A325TC), S10T
5. **Finishes**: Plain, Black oxide, Hot Dip Galvanized, Dacromet, etc.
6. **Classes and Grades**:
| Classes and Grades | Combination of grade according to mechanical properties of component parts |
|--------------------|---------------------------------------------------------------|
| | |
| BOLT | NUT | WASHER |
| A325TC 8.8 | F1852 TYPE1 | ASTM A563DH |
| A490TC 10.9 | F2280 TYPE1 | ASTM A563DH |
7. **Hardness Requirements for Bolt, Nut, and Washer**:
| Component | Hardness |
|-------------|------------------|
| BOLT | HRC 25–34 |
| NUT (F10) | HRB 95–HRC 35 |
| WASHER (F35)| HRC 35–45 |
8. **Mechanical Properties for S10T Bolt**:
| Property | Tensile Strength (psi) | Proof Load (psi) |
|----------------------|------------------------------|---------------------------|
| A325TC | ≥120,000 (1/2~1") | 85,000 (1/2~1") |
| | ≥105,000 (1 1/8") | 74,000 (1 1/8") |
| A490TC | 150,000–173,000 | 120,000 |
These high-strength TC bolts are ideal for use in bridges, buildings, and other heavy-duty structures where load-bearing capacity is crucial. The combination of appropriate materials, grades, and finishes ensures long-lasting performance under various environmental conditions. Whether you're looking for standard or custom options, we can provide solutions tailored to your specific needs.