|
X20Cr13
EN 10250-4:1999, Number: 1.4021
EN 1088-1; 10088-2; EN 10088-3; EN 10263-5; EN 10272 i EN
10297-2
|
|
Comparison of steel grades
|
|
JUS
|
|
|
DIN
|
|
|
BS
|
|
|
GOST
|
|
|
AISI
|
|
|
NF
|
|
Chemical analysis -% by mass (Hemijska analiza)*
|
Hemijski element
|
C
|
Si
max.
|
Mn
max.
|
P
max.
|
S
max.
|
Cr
|
-
|
|
|
% mase
|
0,16-0,25
|
1,00
|
1,50
|
0,040
|
0,030 *
|
12,00-14,00
|
-
|
|
|
Dozvoljeno odstupanje
|
± 0,01
|
+ 0,05
|
+ 0,04
|
+ 0,005
|
+ 0,005
|
± 0,15
|
-
|
|
*For
products to be machined a controlled sulfur content of 0,015 to 0,030% is
recommended.
Za sve proizvode namijenjene za mehaničku obradu preporučuje se i
dozoljava sadržaj sumpora od 0,015 do 0,030%.
Mechanical properties at room
temperature
|
Size range
mm
|
Heat treatment
condition*
|
Proof stress
Rr0.2 min.
N/mm2
|
Tensile strenght
Rm
N/mm2
|
Elongation after fractura
A min., in %
|
Notch impact energy
(ISO – V)
KV min. in J
|
Hardness
HB max.
|
|
Longit.
|
Transv.
|
Longit.
|
Transv.
|
|
|
A
|
|
Max. 760
|
-
|
-
|
-
|
-
|
230
|
|
d £ 160
|
QT 700
|
500
|
700 to 850
|
13
|
-
|
25
|
-
|
-
|
|
d £ 160
|
QT 800
|
600
|
800 to 950
|
12
|
-
|
20
|
-
|
-
|
|
Rr0.2 min. in N/mm2at
elevated temperatures in quenched and tempered condition
|
|
Condition
|
100°C
|
150°C
|
200°C
|
250°C
|
300°C
|
350°C
|
400°C
|
|
QT 700
|
460
|
445
|
430
|
415
|
395
|
365
|
330
|
|
QT 800
|
515
|
495
|
475
|
460
|
440
|
405
|
355
|
*A –
annealed; QT – quenched and tempered
Mechanical properties in the
normalized and normalized and tempered conditions
|
Thickness of ruling
section tR
|
|
Diameter in mm
|
tR ≤
100mm
|
100< tR
≤250mm
|
250< tR
≤500mm
|
500< tR
≤1000mm
|
|
Re min
(N/mm2)
|
215
|
175
|
165
|
-
|
|
Rm min (N/mm2)
|
340
|
340
|
340
|
-
|
|
A % min.
|
l-longitudinal
|
24
|
23
|
23
|
-
|
|
tr - transverse
|
-
|
17
|
17
|
-
|
|
KV min * (J)
|
l-longitudinal
|
35
|
30
|
27
|
-
|
|
tr - transverse
|
-
|
20
|
15
|
-
|
1N/mm2=1MPa
* Impact testing shall be carried out at -200C.
Heat treatment conditions (Temperature termičke
obrade)
|
Quenching
Temperature, 0C
(Temperatura kaljenja )
|
Cooling medium
(hlađenje u)
|
Tempering
Temperature, 0C
(Temperatura
otpuštanja)
|
Normalizing
temperature, 0C
(Temperatura
normalizacije)
|
|
-
|
-
|
-
|
890 to 950
|
|
Steel Code
|
EN 10088
|
DIN
|
AISI/SAE
|
BS
|
AFNOR
|
JIS
|
JUS
|
GOST
|
CSN
|
UNE
|
|
1.4021
|
X20Cr13
|
X20Cr13
|
420
|
420S37
|
Z20C13
|
SUS420J1
|
Č.4172
|
20Ch13
|
17022
|
F.3402
|
|
2
|
Chemical composition (cast analysis)* elements
|
|
C
|
Si max
|
Mn max
|
P max
|
S
|
Cr
|
|
0,16 to 0,25
|
1,00
|
1,50
|
0,040
|
£0,030**
|
12,00 to 14,00
|
|
|
|
Permissible tolerance % by mass
|
|
± 0,01
|
+ 0,05
|
± 0,03
|
± 0,005
|
+ 0,005
|
± 0,15
|
*Elements
not quoted in this table may not be Intentionally added to the steel without
the agreement of the purchaser except for finishing the cast. All appropriate
precautions are to be taken to avoid the a addition of such elements from scrap
and other materials used in production which would impair mechanical properties
and the suftabillitz of the steel.
** For
product to be machined a controlled sulfur content of 0,015 to 0,030 % is
recommended.
|
3
|
Mechanical properties
At room temperature
|
|
Size range
mm
|
Heat treatment
condition*
|
Proof stress
Rr0.2 min.
N/mm2
|
Tensile strenght
Rm
N/mm2
|
Elongation after fractura
A min., in %
|
Notch impact energy
(ISO – V)
KV min. in J
|
Hardness
HB max.
|
|
Longit.
|
Transv.
|
Longit.
|
Transv.
|
|
|
A
|
|
Max. 760
|
-
|
-
|
-
|
-
|
230
|
|
d £ 160
|
QT 700
|
500
|
700 to 850
|
13
|
-
|
25
|
-
|
-
|
|
d £ 160
|
QT 800
|
600
|
800 to 950
|
12
|
-
|
20
|
-
|
-
|
|
Rr0.2 min. in N/mm2at
elevated temperatures in quenched and tempered condition
|
|
Condition
|
100°C
|
150°C
|
200°C
|
250°C
|
300°C
|
350°C
|
400°C
|
|
QT 700
|
460
|
445
|
430
|
415
|
395
|
365
|
330
|
|
QT 800
|
515
|
495
|
475
|
460
|
440
|
405
|
355
|
*A –
annealed; QT – quenched and tempered
|
4
|
Hot forming and Heat treatment, structure
|
|
Hot forming
|
|
Heat treatment, structure
|
|
°C
|
Cooling
|
Annealing A
|
Quenching QT
|
Tempering QT
|
|
1100 to 800
|
Slow cooling
|
°C
|
Cooling
|
Structure
|
°C
|
Cooling
|
°C
|
Structure
|
|
745 to 825
|
Air
|
Ferrite with spherical carbides
|
950 to 1050
|
Oil, air
|
QT 700
650 to 750
|
Transformation
structure with ferrite
|
|
Qt 800
600 to 700
|
|
Density
kg/dm3
|
Modulus of elasticity
kN/mm2 at
|
Mean coeff. of thermal
Expansion 10-6K-1
Between 20°C and
|
Thermal conductivity
at 20°C
W/mK
|
Specific heat
at 20°C
J/kgK
|
Resistivity
at 20°C
W mm2/m
|
Magnetisable
|
|
20°C
|
200°C
|
400°C
|
100°C
|
200°C
|
400°C
|
|
7,7
|
215
|
205
|
190
|
10,5
|
11,0
|
12,0
|
30
|
460
|
0,60
|
Yes
|
Mikroskopsko određivanje veličine
zrna
|
Veličina zrna se ugovara. Kao referentni standardi se koriste JUS
C.A3.004:1995, ISO 643:1983, EURONORM 103 i ASTM E-112 (PRILOG 9)
|
Nematalni uključci
|
Nematalni uključci se
posebno ugovaraju. Kao standard za ugovaranje istih koristiti JUS C.A3.013,
ASTM - E45, DIN 50602, NF A 04-106 koji je identičan sa
ISO 4967-1979 i standarda SS 11 11 16 (PRILOG 10)
|
Ispitivanje metodama bez razaranja
|
Ispitivanje
metodama bez razaranja se posebno ugovara. Kao referentni standardi se
koriste SEP 1921, EN 583-1:1998, EN 10228-3 (PRILOG 11)
|
|
Related products:
X5CrNi18-10 | X17CrNi18-2 | X20Cr13 |
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.
|
 |
|
|
Zeljezara Niksic - Niksic, Montenegro
Phone: (+382) 20 234-616, (+382) 40 202 900 | Fax: (+382) 40 202-023
 | Website: www.znksteel.com
|
|
