主要成份％	C碳	Si矽	Mn锰	P（磷）	S（硫）	Cr（铬）
	1.00-1.10	0.15-0.50	0.60-1.10	/0.030以下	0.030以下	0.10-0.50

Forging: Heat up evenly to 850℃ and forge in this temperature.
Anneal: Heat up to 750-780℃ and stay for 1-2hours in this temperature; then cool in furnace.
Quenching: Heat up to 790-850℃ and quench in oil.
Hardness: more than HRC63.
Characteristics: This steel is added a little chrome to improve the shortcoming of being easy to crack to prolong its service life.
Uses: the same as that of SH2-3.
Specification: round (MM)
16 20 22 25 28 32 35 38 41 45 51 57 60 63
70 76 85 90 95 102 115 125 140 153 180 203 230
Flat (MM)
15X105-125-130-160-203-253-300-350-407-457-610
20X105-125-130-160-203-253-300-350-407-457-610
25X105-125-130-160-203-253-300-350-407-457-610
30X105-125-130-160-203-253-300-350-407-457-610
35X105-125-130-160-203-253-300-350-407-457-610
40X105-125-130-160-203-253-300-350-407-457-610
45X105-125-130-160-203-253-300-350-407-457-610
50X105-125-130-160-203-253-300-350-407-457-610
55X105-125-130-160-203-253-300-350-407-457-610
60X105-125-130-160-203-253-300-350-407-457-610
65X105-125-130-160-203-253-300-350-407-457-610
70X105-125-130-160-203-253-300-350-407-457-610
75X105-125-130-160-203-253-300-350-407-457-610