21
Table 2
No.
Material
HLD
Strength
σ
b
(MPa)
1
Mild steel
350
~
522
374
~
780
2
High‐Carbon steel
500
~
710
737
~
1670
3
Cr steel
500
~
730
707
~
1829
4
Cr‐V steel
500
~
750
704
~
1980
5
Cr‐Ni steel
500
~
750
763
~
2007
6
Cr‐Mo steel
500
~
738
721
~
1875
7
Cr‐Ni‐Mo steel
540
~
738
844
~
1933
8
Cr‐Mn‐Si steel
500
~
750
755
~
1993
9
Super strength steel
630
~
800
1180
~
2652
10
Stainless steel
500
~
710
703
~
1676