TR50 steel rail
Standard: AISI, ASTM
Rail Heigth: 152.4mm
Bottom Width: 136.5mm
Web Thickness: 14.3mm
Head Width: 68.2mm
Model Number: TR50 (100 RE)
Type: Heavy Rail
Application: Railway Rail
Name: TR50 (100 RE) AREMA steel rail
Usage: Factory railroad line
Certificate: 3.1 MTC/EN 10204 3.2 by Lloyd’s regiester inspection
Market: South America
Property: 100 RE rail
MOQ: 400 Tons
Warranty: 12 months
HS CODE: 73021000
Supply Ability: 4500 Ton/Tons per Day
Packaging Details: Bundle by bulk cargo
Port: Tianjin port
- Exportable international standard flat bottom rail
- Producing and Inspection standard
ASTM A759 TR50 (100 RE) steel rail is used for North America or South America market, we can produce it by order, the MOQ is 500 tons, length and hardness as your requirement.
Standard EN 13674 - 1:2003 consists of two main parts:
− qualification test and acceptance tests
Qualification tests are some other tests that were previously carried out, as for example, fracture toughness. Acceptance tests characterize the properties of the prescribed tests, which ensure production of high quality rails, and testing requirements of railway administration.
Quality of rails is based on measured values of hardness, by which they introduced new labels for steel rails.
Qualification testing must be conducted at least one in five years and the major
changes in technology, production rails. Additional testing residual stresses are carried
out on all types of steel rails every two year maximum, provided that the longitudinal
strain rate in the rails can amount to up to 250 MPa.
The prescribed qualifying examination is the following:
− fracture toughness
− fatigue crack growth rate
− fatigue testing
− residual stress in rail foot
− variation of centre line
− tensile strength and elongation
− other qualification requirements
Within acceptance testing is carried out a series of laboratory tests such as:
− chemical composition (the maximum content of the following elements: H, O, Al, V, N and oligo elements)
− microstructure (increasing x 500)
− degree of decarburizing charred layer (allowed up to 0.25 mm)
− purity of steel (especially the presence of oxide)
− macrostructure (Baumann test)
− tensile strength
Other acceptance testing rails are:
− dimension tolerances
− criteria (control template)
− inspection requirements / tolerances for to internal quality and surface quality
Internal state is examined ultrasound in a continuous process control, and includes at least 70% of the head and at least 60% web.
- Standard of UIC 860 V: 1996 - prescribed four types pearlite steel rails in the range of tensile strength from 700 to 1300 MPa.
- Standard EN 13674 - 2003, provides seven types pearlite steel hardness in the range 200 to 390 HBV, types steel in accordance with EN 13674, based on the values of hardness (R 200, R 220, R 260, R 260 Mn, 320 Cr, 350 HT, 350 LHT).