Description
BS EN10297-1 Alloy Tube
EN 10297 part 1 specifies the technical delivery conditions for seamless circular tubes made of non-alloy and alloy steels for mechanical and general engineering purposes.
Alloy special steel:41Cr4,25CrMo4,30CrMo4,34CrMo4,42CrMo4
OD: 20-660mm WT: 2.3-100mm L: 5.8M, 6M, 11.8M, 12M or any other specified length.
Application: Machining, General engineering, crane arm, Bushes, Cylinders Various, Conveyor Rolls, Hollow Shafts, Hollow Parts and components, Nuts, Rings, etc
Chemical composition (cast analysis) for tubes made from alloy special steels in % by mass a
| Steel grade |
C | Si | Mn | P | S | Cr |
Mo |
Ni |
||||||
| Steel name | Steel number | min. | max. | max. | min. | max. | max. | max. | min. | max. | min. | max. | min. | max. |
| 41Cr4 | 1.7035 | 0,38 | 0,45 | 0,40 | 0,60 | 0,90 | 0,035 | 0,035 | 0,90 | 1,20 | – | – | – | – |
| 25CrMo4 | 1.7218 | 0,22 | 0,29 | 0,40 | 0,60 | 0,90 | 0,035 | 0,035 | 0,90 | 1,20 | 0,15 | 0,30 | – | – |
| 30CrMo4 | 1.7216 | 0,27 | 0,34 | 0,35 | 0,35 | 0,60 | 0,035 | 0,035 | 0,80 | 1,15 | 0,15 | 0,30 | – | – |
| 34CrMo4 | 1.7220 | 0,30 | 0,37 | 0,40 | 0,60 | 0,90 | 0,035 | 0,035 | 0,90 | 1,20 | 0,15 | 0,30 | – | – |
| 42CrMo4 | 1.7225 | 0,38 | 0,45 | 0,40 | 0,60 | 0,90 | 0,035 | 0,035 | 0,90 | 1,20 | 0,15 | 0,30 | – | – |
| a See also 7.1. | ||||||||||||||
| b<0,25% Cu. | ||||||||||||||
Mechanical properties for tubes made of steels in accordance with Table 6 in delivery condition +QT:
| Steel grade | Minimum tensile properties | |||||||||||||||||
| Steel name | Steel number | Yield strength (ReH) MPa | Tensile strength ( Rm) MPa | Elongation A% | ||||||||||||||
| For T in mm | For T in mm | For T in mm | ||||||||||||||||
| T≤8 | 8＜T≤20 | 20＜T≤50 | 50＜T≤80 | T≤8 | 8＜T≤20 | 20＜T≤50 | 50＜T≤80 | T≤8 | 8＜T≤20 | 20＜T≤50 | 50＜T≤80 | |||||||
| l | t | l | t | l | t | l | t | |||||||||||
| 41Cr4 | 1.7035 | 800 | 660 | 560 | – | 1000 | 900 | 800 | – | 11 | 9 | 12 | 10 | 14 | 12 | – | – | |
| 25CrMo4 | 1.7218 | 700 | 600 | 450 | 400 | 900 | 800 | 700 | 650 | 12 | 10 | 14 | 12 | 15 | 13 | 16 | 14 | |
| 30CrMo4 | 1.7216 | 750 | 630 | 520 | 480 | 950 | 850 | 750 | 700 | 12 | 10 | 13 | 11 | 14 | 12 | 15 | 13 | |
| 34CrMo4 | 1.7220 | 800 | 650 | 550 | 500 | 1000 | 900 | 800 | 750 | 11 | 9 | 12 | 10 | 14 | 12 | 15 | 13 | |
| 42CrMo4 | 1.7225 | 900 | 750 | 650 | 550 | 1100 | 1000 | 900 | 800 | 10 | 8 | 11 | 9 | 12 | 10 | 13 | 11 | |
| NOTE l = longitudinal, t = transverse. | ||||||||||||||||||
Tolerances on outside diameter and on thickness:
Tolerances of Lengths:
when Length equals 6000mm, Tolerances 0/+10
when 6 000 < L =12 000, Tolerances 0/+15
when > 12 000,Tolerances 0/+ by agreement
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sales@metal-pipe.com,HSH stocks a broad range of metal materials, including aluminum, steel, stainless steel, copper and brass, and specialty metals. Also, we also sell cast fittings, cast Iron, forged fittings, cutting tools, flanges, ect. If you have any needs about our products, you can contact us.
sales@metal-pipe.com