Table 5: Variation of hardness values with % steel dust.

Steel dust addition %As cast + rolled (HRC)As cast (HRC)SH (HRC)SHRN (HRC)SHRQ (HRC)SHRT (HRC)

055.2844.1441.8441.9044.3355.03
256.6150.8141.8041.4041.9042.40
546.6755.5549.9046.9036.1054.10
1038.0040.5551.2048.9047.4042.10
1542.7835.3048.4086.6040.1047.70
2048.2238.0937.6051.0450.7838.27