What material are rail spikes made of

Railway spikes are essential fasteners used to secure rails to wooden or concrete sleepers, primarily categorized into screw spikes and dog spikes. Their material directly influences strength, wear resistance, and service life. Common materials mainly include the following types:

 

 

Dog Spike

 

Specification	Material	Surface	Standard
5/8*6 ''	A3,Q235, 45#,55#, etc	According to customer needs.	According to customer's drawings or samples.
9/16*5-1/2 ''
3/8''*3-1/2 ''
1/2*3-1/2
Other kinds

 

Rail Screw

 

Type	Ss5, Ss 8, Ss25, Ss36, UIC864-1 Series, etc
Raw material	Q235, 35 steel, 45steel, 40Mn2, 20 Mn Si
Grade	4.6, 4.8, 5.6, 8.8
Surface	plain(oiled), black paint, color paint, zinc, HDG, etc

 

Carbon Structural Steel

 

• Q235, 35 Steel, 45 Steel (45#): These are low to medium carbon steels with good strength and plasticity, suitable for general railway lines. They offer low cost and easy processing.

 

• Characteristics: Moderate strength, good toughness, impact resistance. Often used in standard railways, light-duty lines, or scenarios where sleeper fixation requirements are not exceptionally high.

 

 

Alloy Steel and High-Strength Steel

 

• 40Mn2, 20MnSi: These are manganese alloy or manganese-silicon alloy steels, offering high strength, high toughness, and good wear resistance.

 

• Characteristics: Suitable for heavy-haul railways, high-speed railways, and industrial tracks. They can withstand frequent heavy loads and impact loads, providing a long service life.

 

 

Special Grade Steels

 

• A3 Steel: A common carbon steel, typically used for light-duty or temporary tracks. Easy to process, but its strength and wear resistance are lower than alloy steels.

 

• 55# Steel: A medium carbon steel with higher strength and hardness than Q235, suitable for railway spikes requiring certain load-bearing capacity.

 

 

Material Selection Principles

 

• Standard Railways: Carbon steels like Q235, 45 Steel can meet the requirements for rail fixation and load-bearing.

 

• Heavy-Haul / High-Speed Railways: Choose high-strength steels like 40Mn2, 20MnSi to enhance wear resistance and impact load capacity.

 

• Environmental Requirements: In corrosive or humid environments, materials can undergo surface anti-corrosion treatments (hot-dip galvanizing, coating, etc.) to extend spike service life.

 

GNEE RAIL can provide railway spikes in various materials, including Q235, 35#, 45#, 40Mn2, 20MnSi, etc. We also supply complementary railway fasteners such as rail pads, rail tie plates, rail clips, fishplates, and crane rail clips, supporting customized design, processing, installation technical guidance to meet the construction and maintenance needs of different railway lines and load requirements.

 

Send your special customization requirements to GNEE.