Daido Steel - S-STAR
Daido Mirror-finishing, anti-corrosion plastic mould steel

Delivered Hardness:
S-Star pre-hardened to HB300-330
S-Star (A) annealed to HB229(max)

Chemical Content(%):(For reference only)
C Si Cr Mo V
0.38 0.9 13.5 0.1 0.3

Comparable Standard:
AISI 420 ESR Mod or WNr. 1.2083ESR or SUS 420J2 ESR

High mirror surface polishability with corrosion resistance. For S-Star (A), 50-52HRC surface hardness can be attained with proper heat treatment in order to obtain even better polishability, wear resistance and/or corrosion resistance

Major Application:
Best suitable for plastic moulding of PVC, PP, EP,PC, PMMA with long production runs, machine parts for food processing machinery


 LKM Steel Rainbow Chart