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C40R
EN 10083-2:2002, Number: 1.1189
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Comparison of steel grades
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JUS
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Č.14343
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DIN
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Ck40
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BS
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(080M40)
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GOST
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40
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AISI
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1040
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UNI
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-
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NF
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(XC42H1), XC38
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Chemical
analysis -% by mass
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Chemical elements
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C
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Si
max.
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Mn
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P
max.
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S
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Cr
max.
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Mo
max.
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Ni
max.
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Cr+Mo+Ni
max.
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%,by mass
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0,37-0,44
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0,40
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0,50-0,80
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0.025
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0,020-0,040
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0,40
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0,10
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0,40
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0,63
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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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+0,05
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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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Symbol
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mm→
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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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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+H
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max.
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60
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60
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59
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57
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53
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47
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39
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34
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31
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30
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29
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28
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27
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26
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25
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24
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min.
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51
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46
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35
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27
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25
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24
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23
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22
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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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-
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Tentative values for the ’’C’’ scale
Rockwell hardness for special steel grades with restricted
hardenability scatter bands (+HH and
+Hl grades)
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Symbol
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Distance in mm from the
quenched end HRC hardness
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1
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4
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5
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+HH4
+HH14
+HL4
+HL14
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-
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38 to 57
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-
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54 to 60
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38 to 57
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-
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-
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27 to 46
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-
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51 to 57
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27 to 46
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-
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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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-
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-
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Mechanical properties in the
quenched and tempered condition (+QT) )
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Mechanical properties
for the ruling sections (see prEN10083-1:2002, Annex A) with a diameter (d)
or for flat products trickness (t) of
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d ≤ 16mm 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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Re min
(MPa)
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460
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400
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350
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Rm (MPa)
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650-800
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630-780
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600-750
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A min. (%)
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16
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18
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19
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Z min. (%)
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35
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40
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45
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KV min. (J)
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30
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30
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30
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Mechanical properties in the
normalized condition – (+N)
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Mechanical properties
for products with a diameter (d) or, for flat products trickness (t) of
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d ≤ 16mm t
≤ 16mm
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16mm < d ≤ 100mm
16mm < t ≤
100mm
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100mm < d ≤
250mm
100mm < t
≤ 250mm
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Re min.
(MPa)
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320
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290
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260
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Rm min. (MPa)
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580
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550
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530
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A min. (%)
|
16
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17
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17
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Heat treatment conditions
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Quenching, 0C
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Quenching agent
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Tempering temperature,
0C
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Hardening temperature
in the end quench test, 0C
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Normalizing, 0C
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830-870
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Water or oil
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550-660
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8700±5
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850 to 910
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Related products:
28Mn6 | C10E | C15E, C15C | C15R | C16E | C16R | C22R | C25E | C35E | C35R | C40E | C40R | C45E | C45R | C50E; 2C50 | C50R | C55E | C55R | C60E | C60R |
Zeljezara Niksic has more than fifty year long tradition as a manufacturer of high quality carbon, non alloy and alloy steel grades. It is an Electric Arc Furnace steelmaker with significant downstream processing options. It has been one of the leading European steel and special steel producers. Its products meet the following standards EN 10027-1, En 10027-2, DIN, JUS, AISI, BS, AFNOR, GOST, UNI. They are exported to most European countries and worldwide.
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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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