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25CrMoS4
EN 10083-3:2002, Number: 1.7213
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Comparasion of steel grades
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JUS C.B9.021
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Č.47301
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DIN
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25CrMoS4
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BS
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(708 M 25)
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GOST
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-
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AISI
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5140
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UNI
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25CrMoS4
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NF
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25 CD 4, 25 CD 4 u
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Chemical analysis -% by mass
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Chemical elements
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C
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Si
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Mn
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P
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S
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Cr
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Mo
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%, by mass
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0,22 - 0,29
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£ 0,40
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0,60 - 0,90
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max 0.025
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0,020-0,040
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0,90-1,20
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0,15-0,30
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Permissible deviation
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± 0.02
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± 0,03
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± 0,04
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+ 0.005
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± 0.005
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± 0.05
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± 0.03
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Mechanical properties in the
quenched and tempered condition
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d ≤ 16mm oder
t ≤ 8mm
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16mm < d ≤ 40mm
8mm < t ≤
20mm
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40mm < d ≤
100mm
20mm < t ≤
60mm
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100mm < d
≤ 160mm
60mm < t ≤
100mm
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160mm < d ≤
250mm
100mm < t
≤ 160mm
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Re min (MPa)
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700
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600
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450
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400
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-
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Rm (MPa)
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900-1100
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800-950
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700-850
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650-800
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-
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A min. (%)
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12
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14
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15
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16
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-
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Z min. (%)
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45
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55
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60
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60
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-
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KV min. (J)
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50
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50
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50
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45
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-
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Jominy’s hardenability band
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Distance in mm from quenched end
Hardness in HRC
(mm)
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mm
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1,5
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3
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5
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7
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9
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11
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13
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15
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20
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25
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30
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35
|
40
|
45
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50
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+H
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max.
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52
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52
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51
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50
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48
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46
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43
|
41
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37
|
35
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33
|
32
|
31
|
31
|
31
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min.
|
44
|
43
|
40
|
37
|
34
|
31
|
29
|
27
|
23
|
21
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20
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-
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-
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-
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-
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|
+HH*
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max.
|
52
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52
|
51
|
50
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48
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46
|
43
|
41
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37
|
35
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33
|
32
|
31
|
31
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31
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min.
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47
|
46
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44
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41
|
39
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37
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34
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32
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28
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26
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24
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23
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22
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22
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22
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+HL*
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max.
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49
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49
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47
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47
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43
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41
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38
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36
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32
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30
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29
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28
|
27
|
27
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27
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min.
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44
|
43
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40
|
37
|
34
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31
|
29
|
27
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23
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21
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20
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-
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-
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-
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-
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Heat treatment conditions –
informative
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Hardening temperature
in the end quench test
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Quenching temperature
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Quenching in
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Tempering temperature
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8500±50C
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840-900 0C
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Water or oil
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540-680 0C
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Maximum hardness for products to be
supplied in the ’’treated to improve shearability (+S)’’ or
’’soft annealed (+A)’’ condition
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+S
HB max.
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+A
HB max.
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255
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212
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 |
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Zeljezara Niksic - Niksic, Montenegro
Phone: (+382) 20 234-616, (+382) 40 202 900 | Fax: (+382) 40 202-023
 | Website: www.znksteel.com
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