CHROME-PLATED
BARS
Commercialisation of chrome-plated bars to high quality standards
Impact Energy:
min 27J at - 20°C for 20MnV6
min 35J at - 20°C for 42CrMo4+QT
|
Description |
|
|
Hard Chrome plated bars | Induction hardened and hard chrome plated steel bars Steel grade | C45E, 20MnV6, 38MnVS6, 42CrMo4 / Ø6 - 200 mm / Ø1/4” - 8” |
|
Corresponding steel grade |
|||||||
|
EN |
Werkstoff |
DIN |
B.S. |
UNI |
JIS |
GOST |
AISI / SAE / ASTM |
|
C45E |
1.1191 |
Ck45 |
080M46 |
C45 |
S45C |
45 |
1045 |
|
- |
1.5217 |
20MnV6 |
55M |
- |
- |
- |
A572 |
|
38MnVS6 |
1.1303 |
38MnSiVS5 |
- |
- |
- |
- |
(10V45)* |
|
42CrMo4 |
1.7225 |
42CrMo4 |
708M40 |
42CrMo4 |
SCM440(H) |
40ChFA |
4140 |
|
* Equivalent |
|||||||
|
Chemical composition |
||||||||||
|
Steel grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
V |
N |
|
C45E |
0.42 ÷ 0.50 |
max. 0.40 |
0.50 ÷ 0.80 |
max. 0.030 |
max. 0.035 |
max. 0.40 |
max. 0.10 |
max. 0.40 |
- |
- |
|
20MnV6 |
0.16 ÷ 0.22 |
0.10 ÷ 0.50 |
1.30 ÷ 1.70 |
max. 0.035 |
max. 0.035 |
- |
- |
- |
0.10 ÷ 0.20 |
- |
|
38MnVS6 |
0.34 ÷ 0.41 |
0.15 ÷ 0.80 |
1.20 ÷ 1.60 |
max. 0.025 |
0.020 ÷ 0.060 |
max. 0.30 |
max. 0.8 |
- |
0.08 ÷ 0.20 |
0.010 ÷ 0.020 |
|
42CrMo4 |
0.38 ÷ 0.45 |
max. 0.40 |
0.60 ÷ 0.90 |
max. 0.025 |
max. 0.035 |
0.90 ÷ 1.20 |
0.15 ÷ 0.30 |
- |
- |
|
|
Mechanical properties |
|||||
|
Steel grade |
Diameter Ø mm |
Tensile strength Rm N/mm2 |
Yield point Rp 0.2 N/mm2 |
Elongation A5 % |
Norm |
|
C45E |
6 < Ø ≤ 16 |
min. 710 |
min. 500 |
min. 6 |
- |
|
16 < Ø ≤ 25 |
min. 650 |
min. 410 |
min. 7 |
- |
|
|
19 < Ø ≤ 100 |
min. 580 |
min. 305 |
min. 16 |
- |
|
|
100 < Ø ≤ 200 |
min. 560 |
min. 275 |
min. 16 |
- |
|
|
20MnV6 |
6 < Ø ≤ 19 |
min. 700 |
min. 620 |
min. 10 |
- |
|
19 < Ø ≤ 80 |
min. 600 |
min. 460 |
min. 18 |
- |
|
|
80 < Ø ≤ 160 |
min. 550 |
min. 420 |
min. 18 |
- |
|
|
38MnVS6 |
20 < Ø ≤ 160 |
800 - 950 |
min. 520 |
min. 12 |
- |
|
42CrMo4+QT |
6 < Ø ≤ 16 |
1100 - 1300 |
min. 900 |
min. 10 |
- |
|
16 < Ø ≤ 40 |
1000 - 1200 |
min. 750 |
min. 11 |
- |
|
|
40 < Ø ≤ 100 |
900 - 1100 |
min. 650 |
min. 12 |
- |
|
|
100 < Ø ≤ 160 |
800 - 950 |
min. 550 |
min. 13 |
- |
|
|
160 < Ø ≤ 200 |
750 - 900 |
min. 500 |
min. 14 |
- |
|
|
Dimensions |
Ø6 - 200 mm / Ø1/4” - 8” / other, on request |
|
Diameter tolerance |
ISO f7 / other, on request |
|
Roundness |
max. 1/2 from diameter tolerance |
|
Standard lenght |
5.000 - 7.200 mm / others on request |
|
Surface roughness |
Ra: max. 0.20 μm |
|
Chrome thickness |
Ø < 20 mm: min. 15 μm |
|
Ø ≥ 20 mm: min. 20 μm |
|
|
Chrome layer hardness |
min. 900 HV0.1 |
|
Straightness |
Ø ≤ 16 mm: max. 0.3 mm/1000 mm |
|
Ø > 16 mm: max. 0.2 mm/1000 mm |
|
Table of dimensions - tolerance |
||||||||
|
Diameter mm |
ISO f7 μm |
ISO H6 μm |
ISO H7 μm |
Diameter mm |
ISO f7 μm |
ISO H6 μm |
ISO H7 μm |
|
|
Ø = 6 |
-10 / -22 |
0 / -8 |
0 / -12 |
50 < Ø ≤ 80 |
-30 / -60 |
0 / -19 |
0 / -30 |
|
|
6 < Ø ≤ 10 |
-13 / -28 |
0 / -9 |
0 / -15 |
80 < Ø ≤ 120 |
-36 / -71 |
0 / -22 |
0 / -35 |
|
|
10 < Ø ≤ 18 |
-16 / -34 |
0 / -11 |
0 / -18 |
120 < Ø ≤ 180 |
-43 / -83 |
0 / -25 |
0 / -40 |
|
|
18 < Ø ≤ 30 |
-20 / -41 |
0 / -13 |
0 / -21 |
180 < Ø ≤ 200 |
-50 / -96 |
0 / -29 |
0 / -46 |
|
|
30 < Ø ≤ 50 |
-25 / -50 |
0 / -16 |
0 / -25 |
|||||
|
On request we can provide chrome plated bars with different levels of corrosion resistance |
|||
|
Diameter |
Standard corrosion resistance |
High corrosion resistance |
|
|
Ø < 20 |
rating 9 after 120 h in NSS |
- |
|
|
rating 9 after 200 h in NSS |
- |
||
|
Ø ≥ 20 |
rating 9 after 200 h in NSS |
rating 9 after 500 h in NSS |
|
|
- |
rating 9 after 1000 h in NSS |
||
|
Correspondence between steel grade and surface hardness |
||||
|
C45E |
20MnV6 |
38MnVS6 |
42CrMo4+QT |
|
|
Surface hardness beneath the chrome layer |
58±3 HRC |
45±3 HRC |
57±3 HRC |
59±3 HRC |
Do not hesitate to contact us, we will reply as soon as possible.
Commercialisation of chrome-plated
bars with high resistance
The commercialisation chrome-plated bars of high quality is one of the sectors in which Bricom Srl has developed its business in recent years, after the more than 30 years of experience of the owners who have previously worked in various companies in the sector and can expend important skills to satisfy their customers. Founded in 2016, the company was immediately able to focus on the commercialisation of chrome-plated bars thanks to highly trained staff and work procedures that earned Bricom UNI EN ISO 9001:2015 certification. The selection of high quality producers and suppliers with high standards are the starting point for the commercialisation of chrome-plated bars which are able to satisfy demanding sectors such as hydraulics and pneumatics, as well as the other environments that Bricom is present in, such as mechanics for the construction, automotive, shipbuilding and aerospace industries. Among the companies that trust Bricom today, we can find those in Italian, Europe and many more. This is particularly for the supply of standard bars with a tolerance of f7-h6-h7. The commercialisation of chrome-plated bars certified at origin is extended to complete customisation through cutting processes which are carried out by qualified operators using state-of-the-art machinery for an extremely precise result that meets the high quality standards required for materials in this category. The experience and continued training of our specialised staff means that every stage of work in the commercialisation of chrome-plated bars is carried out attentively and with awareness without neglecting any steps of the process. Moreover, we also pay careful attention to preparing the goods, from transport to the client with packaging in plastic film or otherwise as requested by the client to the logistics and delivery steps. Speed throughout the process is one of the strong points that Bricom attains to and it will continue to pursue this objective in order to improve supply time frames in the future.
