CHROME-PLATED
BARS

Commercialisation of chrome-plated bars to high quality standards

barre_cromate_ENG-x

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.

    I hereby consent to the processing of my personal data in compliance with the relative European Regulation. For further information, please consult the Privacy Policy.

    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.