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CROMAX® IH 482 – INDUCTION-HARDENED, HARD CHROME BAR

    INFORMATION:

     

    Induction-hardened Cromax® IH 482 is based on a medium carbon, micro-alloyed steel, which is characterised by high strength in the as-rolled condition, i.e. without heat treatment. The 482 base steel is a cost-effective alternative to traditional low-alloy, quenched and tempered grades with, in the context of piston-rod applications, equivalent properties.

     

    The analysis of the base steel in Cromax IH 482 is well adapted to induction hardening and a high and uniform hardness is achieved throughout the case irrespective of diameter. In consequence, the resistance to even high-energy external impact is excellent.

    SPECIFICATIONS:

     

  • The thickness of the chrome layer is minimum 20 μm
  •  

  • The surface roughness (Ra) is always less than 0.2 µm and normally in the range 0.05-0.15 µm. Rt (ISO) is always less than 2.0 µm and normally in the range 0.5-1.5 µm
  •  

  • The chrome layer hardness is 850 HV0.1min. The surface hardness in the induction-hardened zone immediately beneath the chrome layer is 55 HRC min. The depth of hardening, which is defined as the distance from the steel/chrome interface at which the hardness has dropped to 400 HV5, is dependent on diameter as tabulated below:
  •  

    (Ø) ≤28 mm

     

  • Hardening depth (mm): 1.0 – 1.5
  •  

    (Ø) >28 – 40 mm

     

  • Hardening depth (mm): 1.3 – 1.7
  •  

    (Ø) >40 mm

     

  • Hardening depth (mm): 1.7 – 2.3
  •  

  • Other hardening depths can be supplied by special arrangement
  •  

  • The maximum deviation is 0.2 mm/1.0 m
  •  

  • The out of roundness is maximized at 50% of the diameter tolerance interval
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  • ISO f7 is standard. Other tolerances can be supplied upon request (narrowest range is ISO level 7)

  • TYPICAL MECHANICAL PROPERTIES:

     

  • Tensile strength (Rm): 850- 1000 MPa
  •  

  • Yield strength(Re): 580 MPa
  •  

  • Elongation (As): 14%
  •  

  • Hardness (HBW): 250 – 300
  •  

  • Resilience (-20°C): No guarantee given, but normally 15 – 30 J

  • CORRESPONDING STANDARDS:

     

    Below is the closest equivalent standard for the steel in Cromax IH 482. In most cases, the correspondence is only approximate.

     

  • CROMAX 482
  •  

  • EN 38MnVS6
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  • DIN 38MnSiVS5
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  • AFNOR 30MV6
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  • SAE/ASTM 1045V
  •  
     
     
    Ovako Cromax is the major manufacturer in Europe of hard-chrome plated products in the form of bar and tube.

STANDARD SIZES (available in stock)
Diameter (mm)Weight (kg/m)Diameter (inch)(mm)Weight (kg/m)
120.891/212.701.00
141.21125.403.97
202.471 1/431.756.22
222.981 1/238.108.94
253.851 3/444.4512.19
305.55250.8015.91
326.312 1/457.1520.13
357.552 1/263.5024.87
367.992 3/469.8530.09
409.86376.2035.81
4512.483 1/482.5542.03
5015.413 1/288.9048.72
5518.654101.6063.65
5619.335127.0099.44
6022.19
6324.47
6526.05
7030.21
7534.68
8039.46
8544.54
9049.94
9555.64
10061.65
10567.97
11074.60
11581.54
12088.78
12596.33
130104.19
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