Material AISI1055/ CF53 Properties

AISI 1055 Steel or Equivalent

Unalloyed High Carbon Steel



Characteristics

Material AISI 1055 is a unalloyed high carbon steel.
  • High stability & hardness, low deformation, good wear resistance; surface for linear bearing shaft, pillar and other high precision machinery parts.
  • Ready to use, save your time for the final finish.

Standard

JIS G4051 S55C
AISI 1055
DIN CF53/1.1213
EN EN 10083-2 C55
NFA 33-101 AF70-C 55
UNS G10550
UNI 7846 C 55
BS 970 070 M 55
UNE 36011 C55k
SAE J 403

Equivalent

S55C JIS G4051,DIN CF53/1.1213, AISI 1055

Availability

Roundbar : Ø 6 mm - 25 mm
Standard Length: 2 - 3.5M
Roundbar : Ø 30 mm - 75 mm
Standard Length: 6M
Price: Call

Dia (mm)
06
07
08
9.5
10
12
13
15
16
20
22
25
30
35
40
45
50
60
63.5
65
70
µm
tolerance
- 5
- 14
- 5
- 14
- 5
- 14
- 5
- 14
- 5
- 14
- 6
- 17
- 6
- 17
- 6
- 17
- 6
- 17
- 7
- 20
- 7
- 20
- 7
- 20
- 7
- 20
- 9
- 25
- 9
- 25
- 9
- 25
- 9
- 25
- 10
- 29
- 10
- 29
- 10
- 29
- 10
- 29
Hardening
depth
1.0 mm
1.5 mm
2.0 mm
2.5 mm
3.0 mm
Standard
length
2000 - 3500 mm
6000 mm


Chemical Composition (weight %)

Grade C Si Mn Cr P S Ni Mo Cu
CF53 0.53 0.25 0.55 - ≤0.04 ≤0.05 - - -
1055 0.50-0.60 0.15-0.35 0.60-0.90 - ≤0.04 ≤0.05 - - -


Mechanical Properties

  • Tensile strength σb (MPa):640-780
  • Yield strength σs (MPa)(min):372
  • Elongation δ5 (%)(min):22
  • Percentage reduction of area ψ (%)(min):38
  • Impact energy Akv (J)(min): 35
  • Compressive strength(Mpa)(min): 350
  • Chrome Thickness (in my) : 20 µm ± 5%
  • Diameter Tolerance : 96
  • Straightness (mm/m) : 1/1000 mm
  • Hardness, Brinell : 197
  • Micro Hardness : HRC 62º ± 2º
  • Hardness dept (mm) : 0.7 ~ 2.5

Forging

Hot forming temperature: 1050-850oC.

Physical Properties

(average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [Metric](g/cm3): 7.85

Soft Annealing
Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 223.

Normalizing
Temperature: 830-860oC.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 120-200oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 810-845oC followed by oil or water quenching. Hardness after quenching is 57-62 HRC.

Tempering
Tempering temperature: 550-660oC.

Application

Steels for superficial hardening: Piston bolts, chain bolts, gear shafts, gear wheels, worms and camshafts,etc

Source:
http://www.metalravne.com


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