Products Description
43kg heavy steel rails are rails with a mass of 43kg per meter, belonging to the heavy rail category. The following is a detailed introduction:
According to my country's railway standards, rails are divided into heavy rails and light rails according to the nominal weight per meter. Rails with a weight of more than 30kg per meter are heavy rails, of which 43kg/m rails are classified as medium-sized heavy rails, which are used for railway lines with medium traffic.
Cross-sectional shape: I-shaped, including three parts: rail head, rail waist and rail bottom.
Main dimensions:
Rail head width: 70mm
Rail height: 140mm
Rail bottom width: 114mm
Rail waist thickness: 14.5mm
Length: The standard length is 12.5 meters or 25 meters, which is slightly shorter when used for curves.
Heavy 43kg 50Mn Steel Rail
| Parameters | |||
| type | weight (kg/m) | material | length (m) |
| 43kg | 44.653 | 50Mn | 12m/12.5m |
| rail height (mm) | bottom width (mm) | head width (mm) | web thickness (mm) |
| 140 | 114 | 70 | 14.5 |
Other Features
50Mn material has good mechanical properties, especially in the following aspects:
Tensile strength:
Due to its high carbon and manganese content, 50Mn steel has a high tensile strength, usually above 850MPa, and can withstand large tensile forces.
Yield strength:
The yield strength is also relatively high, generally reaching around 700MPa, which makes 50Mn steel less likely to undergo plastic deformation when subjected to external forces.
Hardness:
After proper heat treatment, 50Mn steel can also reach a high level of hardness, so it has good wear resistance and impact resistance.
Toughness:
Although 50Mn steel has a high hardness, it can still maintain a certain toughness by controlling alloy elements and heat treatment processes, and is suitable for environments with high impact loads.
| 50Mn | Mechanical Property | Chemical Composition | ||||||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HB | ≤ | ≤ | ≤ | ≤ | ≤ | ||||
| ≥390 | ≥40 | ≥645 | ≥66 | 13% | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | 0.25 | 0 | |||
About Us
Q1: How much axle weight can a 43kg rail bear?
A: It is usually suitable for freight trains with an axle weight of 20-25 tons, depending on the conditions of the sleepers and the roadbed.
Q2: What is the life of a 43kg rail?
A: Under normal freight conditions, the service life is about 10-15 years (depending on maintenance and transportation frequency).
Q3: Can it be used for high-speed railways?
A: Not recommended. High-speed railways generally require 60kg/m or heavier rails to ensure stability and safety.
Q4: What is the anti-corrosion treatment method for 43kg rails?
A: You can choose oiling for rust prevention, galvanizing or natural use (depending on the ambient humidity).
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