Innovations to Enhance Rail Performance - Unife
Innovations to Enhance Rail Performance - Unife
Innovations to Enhance Rail Performance - Unife
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Corus HP Steel – Test results<br />
240,000<br />
Current Pearlitic Steels Corus HP Lab Cast Corus HP BOS Cast<br />
200<br />
Number of Cycles <strong>to</strong> RCF Initiation<br />
200,000<br />
160,000<br />
120,000<br />
80,000<br />
40,000<br />
0<br />
200 250 300 350 400 450<br />
Steel Hardness, HB<br />
Wear Rate (mg/m of slip)<br />
160<br />
120<br />
80<br />
40<br />
0<br />
200 250 300 350 400 450<br />
Hardness (HB)<br />
Current Pearlitic Steels<br />
Corus HP Steels<br />
• The traditional reliance on hardness for increased resistance <strong>to</strong> wear<br />
and rolling contact fatigue has been successfully challenged through<br />
judicious engineering of the pearlitic microstructure. HP steel offers:<br />
–A STEP CHANGE improvement in resistance <strong>to</strong> rolling contact fatigue<br />
– Increased wear resistance at lower levels of hardness<br />
9
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