⚙️ Engineering Specifications
| Parameter | Grade B Premium | Standard Grade A | AREMA Minimum |
|---|---|---|---|
| Tensile Strength | 900 MPa (130,500 PSI) | 700 MPa | 600 MPa |
| Material | MnCrB Alloy Steel | 1045 Carbon Steel | A36 |
| Rail Compatibility | 115RE-176RE + 54E1-60E1 | Single Rail Type | Limited |
| Hole Configuration | 6/8-Hole Laser-Bored | 4-Hole Drilled | 4-Hole |
| Coating | 100μm HDG + Epoxy Topcoat | 60μm HDG | 50μm HDG |
| Fatigue Life | >6M cycles @ 40t axle | 2M cycles | 1M cycles |
| Impact Toughness | 55J @ -40°F | 25J @ -20°F | 20J |
| Surface Hardness | 350 HB (Work-hardening) | 220 HB | 180 HB |
🔩 Rail Compatibility Guide
| Rail Section | Bar Length | Thickness | Bolt Size |
|---|---|---|---|
| 115RE (AREMA) | 720mm | 26mm | 7/8" Gr.B |
| 136RE (AREMA) | 840mm | 30mm | 1" Gr.B |
| 60E1 (EN) | 980mm | 32mm | M30 10.9 |
| 68kg (AS) | 1100mm | 36mm | M33 10.9 |
📜 Global Certifications
North America: FRA §213.121, AREMA Ch.3
Europe: EN 13674-4:2020
Australia: AS 1085.1:2019
Testing: UIC 510-3 Fatigue, ASTM E23 Impact
Coating: ISO 1461 Class D, NORSOK M-501
❓ Track Engineers' FAQs
Q1: Minimum curve radius for 40-ton axles?
A: Certified for 300m radius @ 45mph (FRA Class 10)
Q2: Wood vs concrete sleeper compatibility?
A: Universal design - use insulated pads for concrete (PN: IP-FP-30)
Q3: Difference between 4-hole and 6-hole?
A: 6-hole for >30t axles
If you have any needs, please feel free to consult us!
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AREMA Grade B Heavy Duty Fishplates
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