1.7035 / 41Cr4

  Grade :     41Cr4
    Number:     1.7035
    Classification:     Alloy special steel
    Standard:
    EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels
    EN 10263-4: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for steels for quenching and tempering
    EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels
    EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Technical delivery conditions

 

DIN 1.7035 / 41Cr4 Steel is one of the most widely used alloy steel. After QT heat treatment, 41Cr4 steel has good comprehensive mechanical properties, low temperature impact toughness and harden ability. DIN 1.7035 steel can get higher fatigue strength after oil cooling. The machine ability of 41Cr4 steel is good for normalizing and QT condition. But the weld ability of 1.7035 alloy steel is not so good that it’s easy to produce cracks. This material requires preheating before welding.

Chemical composition %   of grade   41Cr4 (1.7035):   EN 10083-3-2006

C Si Mn P S Cr
0.38 – 0.45 max   0.4 0.6 – 0.9 max   0.025 max   0.035 0.9 – 1.2

Equivalent grades of grade   41Cr4 (1.7035)

Warning! Only for reference

Germany
DIN,WNr
Japan
JIS
France
AFNOR
England
BS
Italy
UNI
Spain
UNE
Russia
GOST
Inter
ISO
41Cr4
SCr440H
42C4
530M40
41Cr4
42Cr4
F1202
40KH
45KH
50
41Cr4

Hardness of 41Cr4 Steel
Annealed (+A): max 207HB
Treated to improve shear ability (+S): max 255HB

Mechanical Properties of 1.7035 / 41Cr4 Steel
Tensile strength: 980MPa
Yield point: 785MPa
Percentage reduction of area after fracture: 45%
Elongation after fracture: 9%
Impact test (+20°C): Transverse – 22J; Longitud – 30-35J

 

 

 

Mechanical properties of grade   41Cr4 (1.7035)

Nominal diameter (mm):

to 16

16 – 40

40 – 100

Rm – Tensile strength (MPa) (+QT)

1000-1200

900-1100

800-950

Rm – Tensile strength (MPa) (+AC+C+AC)

610

Nominal thickness (mm):

to 8

8 – 20

20 – 50

Rm – Tensile strength (MPa) (+QT)

1000

900

800

Nominal diameter(mm):   or for flat products thickness: to 8; 8-20; 20-60;

to 16

16 – 40

40 – 100

Re – Upper yield strength or
Rp0.2 – 0.2% proof strength (MPa) (+QT)

800

660

560

KV – Impact energy (J) (+QT)

+20°
30-35

KV – Impact energy (J) transverse, (+QT)

+20°
22

Nominal thickness (mm):

to 16

16 – 40

40 – 100

A – Min. elongation Lo = 5,65 √ So (%) (+QT), round products

11

12

14

Nominal diameter (mm):     or for flat products thickness: to 8; 8-20; 20-60;

to 16

16 – 40

40 – 100

Z – Reduction in cross section on fracture (%) (+QT)

30

35

40

Z – Reduction in cross section on fracture (%)

(+AC+C+AC)

60

 

  Brinell hardness   (HBW):   (+S)

255

  Brinell hardness   (HBW):   (+A)

241

Quenched and Tempered (+QT) of W-Nr 1.7035 Steel
1. Heat din 1.7035 steel carefully to 850°C;
2. Soak at this temperature then quench in the oil;
3. Temper as soon as 41Cr4 steel reach room temperature (20°C);
4. Heat uniformly to the suitable temperature of 520°C;
5. Withdraw the material from the furnace and cool in the air.

Applications of DIN 41Cr4 Steel
After quenched and tempered,1.7035 steel can be used in the manufacture of medium speed, the load of parts, such as machine tools gear, shaft, worm, etc. After QT and high-frequency surface hardening,41Cr4 steel is always used in the manufacture of high surface hardness, abrasion resistance parts. After quenching and middle temperature tempering, this material is usually used in the manufacture of overloading, medium speed impact of parts.

Mechanical properties

ReH Minimum yield strength
Rm Tensile strength
A Minimum elongation
J Notch impact test

Heat treatment conditions

+A Soft annealed
+AC Annealed to achieve spheroidization of the carbides
+AR As rolled
+AT Solution annealed
+C Cold drawn / hard
+CR Cold rolled
+FP Treated to ferrite-pearlite structure and hardness range
+I Isothermal annealing
+LC Cold drawn / soft
+M Thermo mechanical rolling
+N Normalized
+NT Normalized and tempered
+P Precipitation hardened
+PE Peeled
+QA Air quenched and tempered
+QL Liquid quenched and tempered
+QT Quenched and tempered
+S Treated to improve shearability
+SH As rolled and turned
+SR Cold drawn and stress relieved
+T Tempered
+TH Treated to hardness range
+WW Warm worked
+U Untreated
_APLICATION_STEEL_1.7035_FULL_INFORMATION_41CR4_530M40_SPECIAL_ALLOY_STEEL
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