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EN
30CrNiMo8
DIN
30CrNiMo8
SAE / AISI / ASTM
4340
BS
823M30
AFNOR
30CND8
Equivalent Steel Grades
Material No
1.6580
Chemical Composition (%)
EN 10083
C
Si
Mn
P
S
Cr
Ni
Mo
N
Pb
Min
0.26
0.50
1.80
1.80
0.30
Max
0.34
0.40
0.80
0.025
0.035
2.20
2.20
0.50
0.40
390
600
160 < t ≤ 250
700
100 < t ≤ 60
800
40 < t ≤ 100
900
16 < t ≤ 40
Min
Thickness (mm)
Diameter (mm)
YIELD STRENGTH (Re) (N/mm² = MPa)
Condition of the Sample: QT
Mechanical Properties
250 < t ≤ 330
1130
930
160 < t ≤ 250
1180
980
100 < t ≤ 60
1180
980
40 < t ≤ 100
1230
1030
16 < t ≤ 40
Max
Min
Thickness (mm)
Diameter (mm)
TENSILE STRENGTH (Rm) (N/mm² = MPa)
Min
Thickness (mm)
Diameter (mm)
ELONGATION (%)
12
16 < t ≤ 40
12
40 < t ≤ 100
12
100 < t ≤ 60
12
160 < t ≤ 250
HARDNESS (HB)
+AR
+N
+A
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