1.[ Steel 34CrMo4 1.7220 4135 SCM435H pipe& tube]
Introduction:
| Standard: |
| EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels |
| EN 10132-3: 2000 Cold rolled narrow steel strip for heat treatment. Technical delivery conditions. Steels for quenching and tempering |
| 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 |
|
Equivalent grades of steel 34CrMo4 (1.7220)
Warning! Only for reference
EU
EN |
USA
- |
Germany
DIN,WNr |
Japan
JIS |
France
AFNOR |
England
BS |
Italy
UNI |
China
GB |
Sweden
SS |
Finland
SFS |
Russia
GOST |
Inter
ISO |
| 34CrMo4 |
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2.[Steel 34CrMo4 1.7220 4135 SCM435H pipe& tube]
Surface:
mill finish (not polished)
brushed
mirror
embossed
oxidized
cold-rolled
hot-rolled
3.[Steel 34CrMo4 1.7220 4135 SCM435H pipe& tube ]
Chemistry:
Chemical composition % of steel 34CrMo4 (1.7220): EN 10083-3-2006
| C |
Si |
Mn |
P |
S |
Cr |
Mo |
| 0.3 - 0.37 |
max 0.4 |
0.6 - 0.9 |
max 0.025 |
max 0.035 |
0.9 - 1.2 |
0.15 - 0.3 |
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Post free buying requirement of steel 34CrMo4 (1.7220)
Mechanical properties of steel 34CrMo4 (1.7220)
| Nominal diameter (mm): |
to 16 |
16 - 40 |
40 - 100 |
100 - 160 |
160 - 250 |
|
| Rm - Tensile strength (MPa) (+QT) |
1000-1200 |
900-1100 |
800-950 |
750-900 |
700-850 |
| Nominal thickness (mm): |
0.3 - 3 |
|
| Rm - Tensile strength (MPa) (+A) |
600 |
| Nominal thickness (mm): |
to 8 |
8 - 20 |
20 - 50 |
50 - 80 |
|
| Rm - Tensile strength (MPa) (+QT) |
1000 |
900 |
800 |
750 |
| Nominal diameter(mm): or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160; |
to 16 |
16 - 40 |
40 - 100 |
100 - 160 |
160 - 330 |
|
Re - Upper yield strength or
Rp0.2 - 0.2% proof strength (MPa) (+QT) |
800 |
650 |
550 |
450-500 |
410-450 |
| Nominal thickness(mm): |
0.3 - 3 |
|
| Rp0.2 0.2% proof strength (MPa) (+A) |
460 |
|
| KV - Impact energy (J) longitud., (+QT) |
+20°
35-45 |
|
| KV - Impact energy (J) transverse, (+QT) |
+20°
25-27 |
| Nominal thickness (mm): |
0.3 - 3 |
|
| A - Min. elongation Lo = 80 mm (%) (+A) |
16 |
|
| A - Min. elongation at fracture (%) transverse, (+QT) |
10-12 |
| Nominal thickness (mm): |
to 16 |
16 - 40 |
40 - 100 |
100 - 160 |
160 - 250 |
|
| A - Min. elongation Lo = 5,65 √ So (%) (+QT), round products |
11 |
12 |
14 |
15 |
15 |
| Nominal diameter (mm): or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160; |
to 16 |
16 - 40 |
40 - 100 |
100 - 160 |
160 - 250 |
|
| Z - Reduction in cross section on fracture (%) (+QT) |
45 |
50 |
55 |
55 |
60 |
|
| Z - Reduction in cross section on fracture (%) (+AC) |
60 |
| Brinell hardness (HBW): (+S) |
255 |
| Brinell hardness (HBW): (+A) |
223 |
| Vickers hardness ( HV): (+A) |
185 |
| Vickers hardness ( HV): (+QT) |
315 - 465 |
Properties of steel 34CrMo4 (1.7220)
Weldability: Low weldability; this steel grade can be welded only with suitable precautions.
Hardenability: Steel grade with medium carbon content showing a poor hardenability; sensitive to notching and to quenching cracks. |
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