Recommended Heat Treatments for Various Grades of Steel

AISI or

 SAE 

Number

Normalizing 

Temperature

Annealing 

Temperature

Hardening

 Temperature

Quenching

 Medium

  Degrees F Degrees F Degrees F  
1030 1,625/1,725 1,525/1,575 1,550/1,600 Water or brine
1040 1,600/1,700 1,475/1,525 1,500/1,550 Water or brine
1050 1,550/1,650 1,450/1,500 1,475/1,525 Water or brine
1060 1,500/1,600 1,425/1,475 1,450/1,500 Water or brine
1070 1,500/1,600 1,425/1,475 1,450/1,500 Water or brine
 
1080 1,475/1,575 1,375/1,425 1,400/1,450 Water or brine
1090 1,475/1,575 1,375/1,425 1,400/1,450 Water or brine
1132 1,625/1,725 1,525/1,575 1,550/1,600 Water or brine
1140 1,600/1,700 1,475/1,525 1,500/1,550 Water or brine
1151 1,550/1,650 1,450/1,500 1,475/1,525 Water or brine
 
1330 1,600/1,700 1,500/1,550 1,525/1,575 Oil or water
1340 1,550/1,650 1,475/1,525 1,500/1,550 Oil or water
3140 1,550/1,650 1,475/1,525 1,475/1,525 Oil
4028 1,600/1,700 1,525/1,575 1,550/1,600 Oil or water
4042 1,550/1,650 1,475/1,525 1,500/1,550 Oil
 
4063 1,550/1,650 1,450/1,500 1,475/1,525 Oil
4130 1,600/1,700 1,525/1,575 1,550/1,600 Oil or water
4140 1,600/1,700 1,500/1,550 1,525/1,575 Oil
4150 1,600/1,700 1,475/1,525 1,500/1,550 Oil
4340 1,600/1,700 1,500/1,550 1,500/1,550 Oil
 
5046 1,600/1,700 1,475/1,525 1,500/1,550 Oil
5130 1,600/1,700 1,500/1,550 1,550/1,600 Oil or water
5145 1,600/1,700 1,475/1,525 1,525/1,575 Oil
5160 1,600/1,700 1,450/1,500 1,500/1,550 Oil
50100 1,600/1,700 1,400/1,450 1,450/1,500 Oil
 
51100 1,600/1,700 1,400/1,450 1,475/1,525 Oil
52100 1,600/1,700 1,400/1,450 1,500/1,550 Oil
6150 1,600/1,700 1,500/1,550 1,550/1,600 Oil
8630 1,600/1,700 1,500/1,550 1,525/1,575 Oil
8645 1,600/1,700 1,475/1,525 1,500/1,550 Oil
 
8660 1,600/1,700 1,450/1,500 1,475/1,525 Oil
8735 1,600/1,700 1,500/1,550 1,525/1,575 Oil
8742 1,600/1,700 1,500/1,550 1,525/1,575 Oil
9260 1,600/1,700 1,500/1,550 1,550/1,600 Oil
9840 1,600/1,700 1,475/1,525 1,500/1,550 Oil
9850 1,600/1,700 1,475/1,525 1,500/1,550 Oil

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