Technical properties

Diameter tolerance, Surface Roughness, Surface Hardness, Straightness, Roundness, Residual magnetism

Diameter tolerance
Standard ISO f7
(special tolerance on request)
Surface Roughness
Ra: max. 0,2 μm
Rt: max. 2 μm
Surface Hardness
Chrome layer hardness: min. 900 HV 0,1
Straightness
Max. 0,2 mm/m
Roundness
Max. 1/2 of the diameter tolerance
Residual magnetism
Max. 50 gauss

Induction hardening values

Hardeness: min. 55 HRC

Diameter (mm) Hardening depth (mm)
8 0,5 ÷ 0,9
10 0,7 ÷ 1,0
12 0,8 ÷ 1,2
14-15 1 ÷ 1,5
16-18 1,1 ÷ 1,6
20-24 1,2 ÷ 1,6
25-28 1,3 ÷ 1,8
30-40 1,5 ÷ 2
40-60 1,6 ÷ 2,1
70-100 2,2 ÷ 2,7
105-200 2,5 ÷ 3,5
* Additional hardening depths on request
** Hardness value for 20MnV6 is min. 42 HRC

Hard chrome plated bars and tubes

Italian hard chrome plated bars and tubes manufacturer offering a wide range of products to all worldwide customers

Grimet S.r.l.

Email: info@grimet.com
Phone +39 075 8989471 | +39 045 7130065
C.F e P. IVA IT-04058570237