BS 90A steel rail

$750.00 $700.00

Standard: BS
Grade: 900A/1100
Rail Heigth: 142.88mm
Bottom Width: 127mm
Web Thickness: 13.89mm
Head Width: 66.67mm
Length: 12-25m
Model Number: BS90A (45E1)
Type: Heavy Rail
Application: Railway Rail
Weight: 45.1 kg/m
Secondary Or Not: Non-secondary
Bolt Hole Diameter: non
Old type: BS11-1985 Standard BS90A steel rail
New type: EN13674-4 45E1 900A light steel rail
Material: UIC860V 900A/1100
Certificate: 3.1 MTC or 3.2 EN10204 Certificate
Other name: 45E1 steel rail
Producing standard: UIC860V
  • Description
  • Producing and inspection specification
  • Strict third inspectio by Lloyd's register
  • Inquiry

BS 90A steel rail is used for subway railway line or mining railroad line, most English contries and European country use this type of rail, the British standard is BS11, European standard is EN13674-4,  the name of type is EN 45E1, they are same type of rail.

Specification: BS90A
Standard: BS11-1985
Material: 700/900A
Length: 12-25m

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.

Qualifying tests

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

− segregation

− other qualification requirements

Acceptance tests

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)

− hardness

− 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).

  

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