Alloy Steel Heat Treating Normalizing, Annealing Temperature Table Chart

Engineering Materials
Applications & Design

The following are Hardenable Grades of Alloy Steel and the perspective normalizing temperature, annealing temperature and quenching medium table chart.

SAE
Steels1
Normalizing2
Temp F
Annealing4
Temp F
Hardening5
Temp F
Quenching
Medium
Temper
1330
1600-1700
1550-1650
1525-1575
Water or Oil
To desired hardness
1335
1600-1700
1550-1650
1500-1550
Oil
To desired hardness
1340
1600-1700
1550-1650
1500-1550
Oil
To desired hardness
1345
1600-1700
1550-1650
1500-1550
Oil
To desired hardness
4037
-
1500-1575
1525-1575
Oil
To desired hardness
4042
-
1500-1575
1525-1575
Oil
To desired hardness
4047
-
1450-1550
1500-1575
Oil
To desired hardness
4130
1600-1700
1450-1550
1500-1600
Water or Oil
To desired hardness
4135
-
1450-1550
1550-1600
Oil
To desired hardness
4137
-
1450-1550
1550-1600
Oil
To desired hardness
4140
-
1450-1550
1550-1600
Oil
To desired hardness
4142
-
1450-1550
1550-1600
Oil
To desired hardness
4145
-
1450-1550
1500-1550
Oil
To desired hardness
4147
-
1450-1550
1500-1550
Oil
To desired hardness
4150
-
1450-1550
1500-1550
Oil
To desired hardness
4161
-
1450-1550
1500-1550
Oil
To desired hardness, 700 F, min
4340
1600-1700
1450-1550
1500-1550
Oil
To desired hardness
50B40
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
50B44
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
5046
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
50B46
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
50B50
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
5060
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
50B60
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
5130
1600-1700
1450-1550
1525-1575
Water, Caustic Solution, or Oil
To desired hardness
5132
1600-1700
1450-1550
1525-1575
Water, Caustic Solution, or Oil
To desired hardness
5135
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
5140
1600-1700
1500-1600
1500-1550
Oil
To desired hardness
5147
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
5150
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
5155
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
5160
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
51B60
1600-1700
1500-1600
1475-1550
Oil
To desired hardness
50100
-
1350-1450
1425-1475
Water
To desired hardness
51100
-
1350-1450
1500-1600
Oil
To desired hardness
52100
-
1350-1450
 
 
To desired hardness
6150
-
1550-1650
1550-1625
Oil
To desired hardness
61B45
1600-1700
1550-1650
1500-1575
Oil
To desired hardness
8630
1600-1700
1450-1550
1525-1600
Water or Oil
To desired hardness
8637
-
1500-1600
1525-1575
Oil
To desired hardness
8640
-
1500-1600
1525-1575
Oil
To desired hardness
8642
-
1500-1600
1500-1575
Oil
To desired hardness
8645
-
1500-1600
1500-1575
Oil
To desired hardness
86B45
-
1500-1600
1500-1575
Oil
To desired hardness
8650
-
1500-1600
1500-1575
Oil
To desired hardness
8655
-
1500-1600
1475-1550
Oil
To desired hardness
8660
-
1500-1600
1475-1550
Oil
To desired hardness
8740
-
1500-1600
1525-1575
Oil
To desired hardness
9254
-
-
1500-1650
Oil
To desired hardness
9260
-
-
1500-1650
Oil
To desired hardness
94B30
1600-1700
1450-1550
1550-1625
Oil
To desired hardness
  1. These steels are fine grain unless otherwise specified.
  2. These steels should be either normalized or annealed for optimum machinability.
  3. Temper at 110-1225.
  4. The specific annealing cycle is dependent upon the alloy content of the steel, the type of subsequent machining operations and desired surface finish.
  5. Frequently, these steels, with the exception of 4340, 50100, 51100, and 52100, are hardened and tempered to a final machinable hardness without preliminary heat treatment.

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