Critical Performance Features
🔹 1,040 MPa Ultimate Tensile Strength (Exceeds AREMA 4.2.1)
🔹 300% Corrosion Protection vs. Standard Zinc Plating
🔹 Nord-Lock Washer System Eliminates Vibration Loosening
🔹 Magnetic Particle Inspected per ASTM E1444
🔹 FRA §213.109 Compliant Safety Assurance
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | ASTM A325M Type 3 / ISO 898-1 Class 10.9 |
| Material | 42CrMo4 Alloy Steel |
| Tensile Strength | 1,040 MPa (min) |
| Proof Load | 830 MPa |
| Surface Treatment | Hot-Dip Galvanized (85μm) + HDG Re-Passivation |
| Hardness | 32-39 HRC |
| Thread Pitch | ISO Metric Coarse (e.g. M24 x 3.0) |
| Temperature Range | -58°F to +300°F (-50°C to +149°C) |
Compliance Certifications
✅ AREMA Chapter 4, Part 2
✅ EN 15048-1:2016 Category E
✅ FRA Track Safety Standard §213.109
🛡️ Corrosion Defense Matrix
| Layer | Protection Mechanism | Standard |
|---|---|---|
| Base Material | Chromium-Molybdenum alloy steel | SAE J404 42CrMo4 |
| Galvanization | 85μm zinc barrier | ASTM A153 Class D |
| Topcoat | Blue chromate passivation | ISO 4042 |
Compatibility Matrix
| Application | Bolt Size | Recommended Torque | Nut Type |
|---|---|---|---|
| Joint Bar Connections | M24 x 140mm | 620 N·m | Flange Nut DIN 6927 |
| Concrete Sleeper Clips | M30 x 160mm | 1,100 N·m | Prevailing Torque Nut |
| Switch Plate Fastening | M20 x 120mm | 340 N·m | Hex Nut ISO 4034 |
If you have any needs, please feel free to consult us!
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Henan Xinda Railway Equipment Co., Ltd
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