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