Description
Technical Parameters
Railway Steel Rail
| Category | Subcategory | Detailed Description |
|---|---|---|
| Basic Information | Cross-Section Shape | Adopts an I-shaped (H-beam-like) structure, consisting of three parts: rail head (contacts train wheels), rail web (connects head and base), and rail base (fixes to sleepers). This shape optimizes bending resistance. |
| Type Representation | Classified by the approximate mass per meter (in kilograms). Common standards in China include 43kg/m, 50kg/m, 60kg/m, and 75kg/m. Higher mass usually indicates higher load-bearing capacity. | |
| Classification | By Steel Grade | 1. Carbon Steel Rail: High-manganese medium-carbon rail, widely used in general railway lines. 2. Micro-Alloyed Rail: Smelted by adding trace alloying elements (e.g., vanadium, titanium, chromium, molybdenum) to improve strength. 3. Low-Alloy Steel Rail: Contains low-content alloys for enhanced wear and corrosion resistance. |
| By Mechanical Properties | 1. Ordinary Rail: Minimum tensile strength ≥ 780MPa, suitable for low-speed, light-load lines. 2. Wear-Resistant Rail: Minimum tensile strength ≥ 1080MPa, used in high-wear areas (e.g., curves, marshalling yards). 3. High-Strength Rail: Minimum tensile strength ≥ 1180MPa (up to 1200-1300MPa), applied in high-speed and heavy-haul railways. |
Product Description
|
Rail Type (Mass/m) |
Key Standards |
Min. Tensile Strength |
Typical Steel Grade |
|
43kg/m |
GB/T 2585-2020, ASTM A1085 |
≥780MPa |
U71Mn (China), Grade 100 (USA) |
|
50kg/m |
GB/T 2585-2020, JIS E1101 |
≥780MPa (ordinary) / ≥880MPa (high-strength) |
U71Mn, 50N (Japan) |
|
60kg/m |
GB/T 2585-2020, EN 13674-1 |
≥880MPa (high-speed) / ≥980MPa (wear-resistant) |
U75V (China), R350HT (Europe) |
|
75kg/m |
GB/T 2585-2020, EN 13674-1 |
≥1080MPa |
U78CrV (China), R400HT (Europe) |
|
100kg/m |
EN 13674-1, ASTM A1085 |
≥1180MPa |
Grade 137 (USA), R450HT (Europe) |
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