Third Edition Hot Rolled and Structural Steel Products - CIM

4
Rail Products
Rails
The majority of rails manufactured by OneSteel in Whyalla are
produced to AS 1085.1 Railway Track Material Part 1 — Steel
Rails.
Table 38 page 28 lists the various rail sections produced at Whyalla
together with the conforming standard.
For dimensional details see Table 31 page 25.
Length — standard length available for AS68kg rail is 25m, for all
other rails standard lengths are 12.19 m, 13.72 m and 27.5 m.
Drilling — rails can be supplied drilled or undrilled.
Head Hardened Rails
Where rail wear, plastic flow of the rail head, corrugation or rail
fatigue defects are reducing rail life it is recommended that OneSteel
head hardened rail be specified. Available test data indicate a
doubling of rail life will occur. Head hardened rail is available in
50 kg/m, 60 kg/m and 68 kg/m sizes.
Some situations where heavier and more expensive crane
rail is specified can also be handled with high strength head
hardened rail.
For further information on rail products contact:
Rail Sales & Marketing Office - OneSteel Whyalla Steelworks
(Refer to Page 30)
HRSSP 3 rd Ed. December 2003
A VAILABILITY
Depth of heat treatment and hardness gradient as per AS 1085.1-2002
Dimensions (mm) a. 15 Min. 23 Max.
Dimensions (mm) b. 20 Min. 35 Max. for 50 kg Rail
Dimensions (mm) b. 25 Min. 40 Max. for 60 kg and 68 kg Rail
Table 2 Hardness Limits
(Vickers Diamond Pyramid Numeral)
Location Hardness HV30
Position C 430 Max.
Along Transverse 1 430 Max. at any point.
360 Min. at 10 mm from rail surface.
Along Transverse 2 430 Max. at any point.
340 Min. at 10 mm from rail surface.
Chemical Composition
The steel is produced by the basic oxygen method, continuously cast.
The steel cast analysis is within the limits shown in Table 38 Page 28