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34CrNiMo6
EN 10250-3:1999, Number: 1.6582
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Comparison of steel grades
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JUS
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Č.5431
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DIN
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34CrNiMo6
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BS
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(816M40, 817M40)
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GOST
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(38H2N2MA)
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AISI
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(4337, 4340)
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NF
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35NCD6
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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
max.
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S
max.
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Cr
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Mo
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Ni
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-
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%, by mass
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0,30- 0,38
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£ 0,40
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0,50-0,80
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0.035
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0.035
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1,30-1,70
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0,15–0,30
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1,30-1,70
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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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* At
the option the manufacturer the elements aluminium, titanium, vanadium and
niobium may be added singly or in combination for grain control
purposes. Elements not quoted in tables shall not be added intentionally to
the steel without the agreement of the purchaser, except for the purpose
of finishing the heat.
Mechanical properties in the
quenched and tempered condition
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Thickness of ruling
section tR
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Diameter in mm
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tR ≤
160mm
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160< tR
≤330mm
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330<tR≤660mm
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Re min
(N/mm2)
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600
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540
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490
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Rm min
(N/mm2)
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800
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750
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700
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A % min.
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l-longitudinal
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13
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14
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15
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tr - transverse
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9
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10
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11
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KV min (J)
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l-longitudinal
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45
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45
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40
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tr - transverse
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22
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22
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20
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1N/mm2=1MPa
Heat treatment conditions ****
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Quenching temperature,
0C
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Tempering temperature, 0C
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830 to 860
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540 to 680
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****
Quenching
from hardening may be carried out in oil, water, or water based solutions.
Caution should be observed in the use of water as a
quenching medium to avoid the risk of cracking the forgings |
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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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