The table below presents the heat treatment information for various types of steels commonly used in machining, such as stainless steel, carbon structural steel, carbon tool steel, alloy carburized steel, die steel, quenched and tempered steel, spring steel, nitrided steel, alloy cutting tool steel, and bearing steel.
The data includes details on annealing temperature, quenching temperature, martensite point, and tempering temperature.
Heat treatment chart for stainless steel
|
Steel type |
Stainless steel |
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|
Steel grade |
1Cr15 |
2Cr13 |
1Cr18Ni9Ti |
|||
|
Annealing temperature |
780 850 |
780 850 |
780 850 |
820 |
||
|
Quenching temperature |
1020 |
1050 |
1050 |
1050 |
||
|
Martensite point |
350 |
350 |
240 270 |
|||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
58 |
|||
|
200 |
41 |
47 |
52 |
57 |
||
|
250 |
56 |
|||||
|
300 |
40 |
46 |
51 |
55 |
||
|
350 |
54 |
|||||
|
400 |
39 |
44 |
50 |
54 |
||
|
450 |
53 |
|||||
|
500 |
38 |
42 |
49 |
50 |
||
|
550 |
31 |
37 |
43 |
45 |
||
|
600 |
24 |
28 |
34 |
40 |
||
|
650 |
22 |
24 |
30 |
38 |
||
Heat treatment chart for carbon steel
|
Steel type |
Carbon structural steel |
Carbon tool steel |
|||||
|
Steel grade |
35 |
45 |
50 |
T8 |
T12 |
||
|
40 |
T7 |
T10 |
|||||
|
Annealing temperature |
880 positive |
860 positive |
840 positive |
760 |
770 |
||
|
Quenching temperature |
850 |
840 |
830 |
780 |
780 |
||
|
Martensite point |
350 |
340 |
320 |
230 |
210 |
||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
52 |
57 |
58 |
62 |
64 |
|
200 |
50 |
56 |
57 |
60 |
62 |
||
|
250 |
48 |
54 |
54 |
57 |
60 |
||
|
300 |
46 |
48 |
51 |
55 |
57 |
||
|
350 |
43 |
45 |
46 |
51 |
53 |
||
|
400 |
39 |
41 |
43 |
47 |
49 |
||
|
450 |
34 |
36 |
38 |
42 |
44 |
||
|
500 |
30 |
32 |
34 |
38 |
39 |
||
|
550 |
26 |
28 |
30 |
34 |
35 |
||
|
600 |
22 |
24 |
25 |
29 |
31 |
||
|
650 |
18 |
20 |
21 |
25 |
28 |
||
Heat treatment chart for alloy carbon steel
|
Steel type |
Alloy carbon steel |
||||||
|
Steel grade |
20Mn2TiB |
18CrNiw |
20Cr |
20Cr |
25CrNiW |
||
|
18CrMnTi |
205iMnV1 |
30CrMnMoTi |
|||||
|
Annealing temperature |
900 positive |
900 positive |
900 positive |
940 positive |
850 |
||
|
Quenching temperature |
860 |
860 |
880 |
800 |
850 |
||
|
Martensite point |
360 |
310 |
380 |
300 |
|||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
44 |
45 |
47 |
63 |
50 |
|
200 |
42 |
44 |
45 |
59 |
48 |
||
|
250 |
41 |
43 |
42 |
56 |
45 |
||
|
300 |
40 |
42 |
40 |
54 |
43 |
||
|
350 |
39 |
41 |
38 |
53 |
40 |
||
|
400 |
39 |
40 |
51 |
38 |
|||
|
450 |
38 |
39 |
49 |
36 |
|||
|
500 |
36 |
37 |
46 |
34 |
|||
|
550 |
32 |
33 |
30 |
||||
|
600 |
28 |
30 |
27 |
||||
|
650 |
25 |
26 |
24 |
||||
Heat treatment chart for die steel
|
Steel type |
Die steel |
||||||
|
Steel grade |
Cr12 type |
3Cr2W8 |
5CrMnMo |
8Cr3 |
Cr9si2 |
||
|
5CrNiMo |
7Cr3 |
||||||
|
Annealing temperature |
860 |
820 |
850 |
830 |
800 |
||
|
Quenching temperature |
1000 |
1080 |
850 |
870 |
1070 |
||
|
Martensite point |
220 |
360 |
220 |
220 |
|||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
63 |
52 |
59 |
62 |
62 |
|
200 |
61 |
49 |
58 |
60 |
61 |
||
|
250 |
60 |
48 |
56 |
59 |
60 |
||
|
300 |
59 |
48 |
53 |
58 |
59 |
||
|
350 |
58 |
47 |
51 |
56 |
58 |
||
|
400 |
58 |
46 |
48 |
53 |
54 |
||
|
450 |
57 |
44 |
45 |
50 |
50 |
||
|
500 |
56 |
45 |
42 |
47 |
47 |
||
|
550 |
53 |
48 |
39 |
45 |
43 |
||
|
600 |
50 |
45 |
35 |
41 |
39 |
||
Heat treatment chart for quenched and tempered steel
|
Steel type |
Quenched and tempered steel |
||||||
|
Steel grade |
30CrNi3 |
35CrMnSi |
37CrNiB |
45Cr |
|||
|
30CrMnNi2MoV |
30CrMnSi |
50B |
45Mn2 |
||||
|
Annealing temperature |
820 |
860 |
820 |
840 |
840 |
||
|
Quenching temperature |
860 |
880 |
860 |
850 |
850 |
||
|
Martensite point |
300 |
360 |
270 |
320 |
310 |
||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
51 |
54 |
51 |
54 |
56 |
|
200 |
50 |
53 |
50 |
51 |
54 |
||
|
250 |
48 |
51 |
48 |
48 |
53 |
||
|
300 |
46 |
48 |
46 |
47 |
51 |
||
|
350 |
44 |
46 |
43 |
46 |
49 |
||
|
400 |
42 |
44 |
41 |
43 |
48 |
||
|
450 |
39 |
41 |
39 |
42 |
46 |
||
|
500 |
35 |
38 |
37 |
38 |
44 |
||
|
550 |
32 |
35 |
34 |
34 |
40 |
||
|
600 |
27 |
28 |
29 |
31 |
35 |
||
|
650 |
25 |
27 |
25 |
25 |
28 |
||
Heat treatment chart for spring steel & nitrided steel
|
Steel type |
Spring steel |
Nitrided steel |
||||
|
Steel grade |
50CrV |
60Si2Mn |
65Mn |
38CrAl |
||
|
55Si2Mn |
60Mn |
38CrMoAl |
||||
|
annealing temperature |
860 |
810 |
810 |
950 positive |
||
|
quenching temperature |
860 |
860 |
810 |
940 |
||
|
Martensite point |
300 |
300 |
270 |
360 |
||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
57 |
62 |
61 |
57 |
|
200 |
55 |
59 |
58 |
55 |
||
|
250 |
53 |
57 |
56 |
53 |
||
|
300 |
51 |
55 |
54 |
51 |
||
|
350 |
48 |
51 |
50 |
48 |
||
|
400 |
46 |
48 |
47 |
46 |
||
|
450 |
43 |
45 |
43 |
43 |
||
|
500 |
40 |
41 |
38 |
40 |
||
|
550 |
36 |
37 |
34 |
36 |
||
|
600 |
32 |
33 |
30 |
34 |
||
|
650 |
30 |
31 |
26 |
30 |
||
Heat treatment chart for alloy cutting tool steel & bearing steel
|
Steel type |
Alloy cutting tool steel |
Bearing steel |
|||||
|
Steel grade |
9Crsi |
CrMn |
SiMn |
GCr15 |
GCr15SiMn |
||
|
CrWMn |
CrW5 |
Cr20 |
|||||
|
Annealing temperature |
800 |
790 |
800 |
790 |
790 |
||
|
Quenching temperature |
860 |
840 |
850 |
850 |
830 |
||
|
Martensite point |
170 |
250 |
240 |
240 |
200 |
||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
64 |
64 |
65 |
63 |
64 |
|
200 |
63 |
62 |
63 |
61 |
63 |
||
|
250 |
61 |
60 |
61 |
59 |
62 |
||
|
300 |
59 |
58 |
59 |
55 |
59 |
||
|
350 |
56 |
55 |
56 |
52 |
53 |
||
|
400 |
54 |
53 |
54 |
49 |
51 |
||
|
450 |
51 |
50 |
51 |
45 |
|||
|
500 |
48 |
47 |
48 |
41 |
|||
|
550 |
44 |
43 |
44 |
36 |
|||
|
600 |
40 |
39 |
40 |
28 |
|||
|
650 |
36 |
35 |
36 |
26 |
|||
Heat treatment chart for spring steel
|
Steel type name |
Spring steel |
Nitrided steel |
||||
|
Steel grade |
50CrV |
60Si2Mn |
65Mn |
38CrAl |
||
|
55Si2Mn |
60Mn |
38CrMoAl |
||||
|
Annealing temperature |
860 |
810 |
810 |
950 positive |
||
|
Quenching temperature |
860 |
860 |
810 |
940 |
||
|
Martensite point |
300 |
300 |
270 |
360 |
||
|
Tempering temperature ℃ |
150 |
Hardness after tempering HRC |
57 |
62 |
61 |
57 |
|
200 |
55 |
59 |
58 |
55 |
||
|
250 |
53 |
57 |
56 |
53 |
||
|
300 |
51 |
55 |
54 |
51 |
||
|
350 |
48 |
51 |
50 |
48 |
||
|
400 |
46 |
48 |
47 |
46 |
||
|
450 |
43 |
45 |
43 |
43 |
||
|
500 |
40 |
41 |
38 |
40 |
||
|
550 |
36 |
37 |
34 |
36 |
||
|
600 |
32 |
33 |
30 |
34 |
||
|
650 |
30 |
31 |
26 |
30 |
||
