The steel grades 41Cr4, 25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4, 36CrNiMo4, 30CrNiMo4, 41NiCrMo7-3-2 which are covered by EN 109207-1 have a very common general purpose grade of medium carbon, Cr-Mo steel. The flexibility afforded by heat treatment options allows it to attain a range of toughness and strength values. Good hardenability, strength, wear resistance, toughness, and ductility. Heat-treatable steel for parts in machinery and plant construction, automotive and aircraft components with high toughness as axle journals, gears, make high-strength parts of compressors, turbines, working elements of heavy ground and underground equipment, and parts of agricultural machines.
EN 10297-1 Seamless Tube Size:
OD: 26.9-610mm
WT: 2.3-100mm
Length: 3000-12000mm
Grade: 41Cr4, 25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4, 36CrNiMo4, 30CrNiMo4, 41NiCrMo7-3-2 which are covered by EN 109207-1
(1) Chemical Composition:
|
Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Ala |
Cu |
N |
Nb |
Ti |
V |
||||||
|
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Max. |
Max. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Max. |
Max. |
Max. |
Min. |
Max. |
|
|
E275K2 |
- |
0.20 |
- |
0.40 |
0.50 |
1.40 |
0.030 |
0.030 |
0.30 |
- |
0.10 |
- |
0.30 |
0.020 |
0.35 |
0.015 |
0.05 |
0.03 |
- |
0.05 |
|
E355K2 |
- |
0.20 |
- |
0.50 |
090 |
1.65 |
0.030 |
0.030 |
0.30 |
- |
0.10 |
- |
0.50 |
0.020 |
0.35 |
0.015 |
0.05 |
0.05 |
- |
0.15 |
|
E420K2 |
0.16 |
0.22 |
0.10 |
0.50 |
1.30 |
1.70 |
0.030 |
0.035 |
0.30 |
- |
0.08 |
- |
0.40 |
0.010 |
0.30 |
0.020 |
0.07b |
0.05 |
0.08 |
0.15b |
|
E460K2 |
- |
0.20 |
- |
0.60 |
1.00 |
1.70 |
0.030 |
0.030 |
0.30 |
- |
0.10 |
- |
0.80 |
0.020 |
0.70 |
0.025 |
0.05b |
0.05 |
- |
0.20b |
|
E590K2 |
0.16 |
0.22 |
0.10 |
0.50 |
1.30 |
1.70 |
0.030 |
0.035 |
0.30 |
- |
0.08 |
- |
0.40 |
0.010 |
0.30 |
0.020 |
0.07b |
0.05 |
0.08 |
0.15b |
|
E730K2 |
- |
0.20 |
- |
0.50 |
1.40 |
1.70 |
0.025 |
0.025 |
0.30 |
0.30 |
0.45 |
0.30 |
0.70 |
0.020 |
0.20 |
0.020 |
0.02 |
0.05 |
- |
0.12 |
|
Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
|||||||||||
|
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Max. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Max. |
||||||
|
41Cr4 |
0.38 |
0.45 |
- |
0.40 |
0.60 |
0.90 |
0.035 |
0.035 |
0.90 |
1.20 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
25CrMo4 |
0.22 |
0.29 |
- |
0.40 |
0.60 |
0.90 |
0.035 |
0.035 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
- |
- |
- |
- |
- |
- |
- |
|
30CrMo4 |
0.27 |
0.34 |
- |
0.35 |
0.35 |
0.60 |
0.035 |
0.035 |
0.80 |
1.15 |
0.15 |
0.30 |
- |
- |
- |
- |
- |
- |
- |
- |
|
34CrMo4 |
0.30 |
0.37 |
- |
0.40 |
0.60 |
0.90 |
0.035 |
0.035 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
- |
- |
- |
- |
- |
- |
- |
|
42CrMo4 |
0.38 |
0.45 |
- |
0.40 |
0.60 |
0.90 |
0.035 |
0.035 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
- |
- |
- |
- |
- |
- |
- |
|
36CrNiMo4 |
0.32 |
0.40 |
- |
0.40 |
0.50 |
0.80 |
0.035 |
0.035 |
0.90 |
1.20 |
0.15 |
0.30 |
0.90 |
1.20 |
- |
- |
- |
- |
- |
- |
|
30CrNiMo4 |
0.26 |
0.34 |
- |
0.40 |
0.30 |
0.30 |
0.035 |
0.035 |
1.8 |
2.20 |
0.30 |
0.50 |
1.80 |
2.20 |
- |
- |
- |
- |
- |
- |
|
41NiCrMo7-3-2 |
0.38 |
0.44 |
- |
0.30 |
0.60 |
0.90 |
0.025 |
0.025 |
0.70 |
0.90 |
0.15 |
0.30 |
1.65 |
2.00 |
0.25 |
- |
- |
- |
- |
- |
|
If there are enough other nitrogen adhesives, the minimum aluminium content is not applicable. The maximum total content of Nb and V is 0.20%. |
||||||||||||||||||||
Mechanical Properties of Seamless Circular Tube:
|
Steel Grade |
Minimum Mechanical Properties |
Impact Properties |
|||||||||||
|
Yield Strength (ReH) Mpa |
Tensile Strength (Rm) Mpa |
Elongation (A%) |
Minimum average absorbed energy, KV min. J at a test temperature of -20℃ min |
||||||||||
|
For T in mm |
For T in mm |
||||||||||||
|
≤ 16 |
＞16 ≤ 40 |
＞40 ≤ 65 |
＞65 ≤ 80 |
＞80 ≤ 100 |
≤ 16 |
＞16 ≤ 40 |
＞40 ≤ 65 |
＞65 ≤ 100 |
l |
t |
l |
t |
|
|
E275K2 |
275 |
265 |
255 |
245 |
235 |
410 |
410 |
410 |
380 |
22 |
20 |
40 |
27 |
|
E355K2 |
355 |
345 |
335 |
315 |
295 |
490 |
490 |
470 |
470 |
20 |
18 |
40 |
27 |
|
E420K2 |
420 |
400 |
390 |
370 |
360 |
600 |
560 |
530 |
500 |
19 |
17 |
27 |
20 |
|
E460K2 |
460 |
440 |
430 |
410 |
390 |
550 |
550 |
550 |
520 |
19 |
17 |
40 |
27 |
|
E590K2 |
590 |
540 |
480 |
455 |
420 |
700 |
650 |
570 |
520 |
16 |
14 |
40 |
27 |
|
E275K2 |
730 |
670 |
620 |
580 |
540 |
790 |
750 |
700 |
680 |
15 |
13 |
40 |
27 |
|
Note: l=longitudinal; t=transverse; a:1Mpa=1N/mm2 |
|||||||||||||
|
Steel Grade |
Yield Strength (ReH) Mpa |
Tensile Strength (Rm) Mpa |
Elongation (A%) min |
|||||||||||||
|
For T in mm |
For T in mm |
|||||||||||||||
|
≤ 8 |
＞8 ≤ 20 |
＞20 ≤ 50 |
＞50 ≤ 80 |
≤ 8 |
＞8 ≤ 20 |
＞20 ≤ 50 |
＞50 ≤80 |
≤ 8 |
＞8 ≤ 20 |
＞20 ≤ 50 |
＞50 ≤ 80 |
|||||
|
l |
t |
l |
t |
l |
t |
l |
t |
|||||||||
|
41Cr4 |
800 |
660 |
560 |
- |
1000 |
900 |
800 |
- |
11 |
9 |
12 |
10 |
15 |
13 |
16 |
14 |
|
25CrMo4 |
700 |
600 |
450 |
400 |
900 |
800 |
700 |
650 |
12 |
10 |
14 |
12 |
15 |
13 |
16 |
14 |
|
30CrMo4 |
750 |
630 |
520 |
480 |
950 |
850 |
750 |
700 |
12 |
10 |
13 |
11 |
14 |
12 |
15 |
13 |
|
34CrMo4 |
800 |
650 |
550 |
500 |
1000 |
900 |
800 |
750 |
11 |
9 |
12 |
10 |
14 |
12 |
15 |
13 |
|
42CrMo4 |
900 |
750 |
650 |
550 |
1100 |
1000 |
900 |
800 |
10 |
8 |
11 |
9 |
12 |
10 |
13 |
11 |
|
36CrNiMo4 |
900 |
800 |
700 |
600 |
1100 |
1000 |
900 |
800 |
10 |
8 |
11 |
9 |
12 |
10 |
13 |
11 |
|
30CrNiMo4 |
1050 |
1050 |
900 |
800 |
1250 |
1250 |
1100 |
1000 |
9 |
7 |
9 |
7 |
10 |
8 |
11 |
9 |
|
41NiCrMo7-3-2 |
950 |
870 |
800 |
750 |
1150 |
1050 |
1000 |
900 |
9 |
7 |
10 |
8 |
11 |
9 |
12 |
10 |
