55C8

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55C8

Grade Introduction:
55C8 Carbon steels have carbon as the key alloying element in their composition. They also contain up to 0.4% silicon and 1.2% manganese. In addition, the residual elements such as copper, molybdenum, aluminum, chromium, and nickel are present in these steels.
55C8 is a water resisting carbon steel whose wear resistance and hardenability are increased by the addition of a small quantity of chromium.

Grade Application

  • Levers
  • Bolts
  • Nuts
  • Studs

Our Supply Range

We supply to automotive ancillaries and OEM customers. The products we manufacture are used as input for manufacturing of automotive and general engineering components. These components are further assembled into systems fitted in automobiles and other engineering applications.

Product Type Size Range
Forged Round Bars 140mm Dia and above
Rolled Round Bars 12mm Dia and above
Forged Flat Bars Thickness: 32mm to 510mm, Width: 65mm to 1050mm
Rolled Flat Bars Thickness: 6mm to 110mm, Width: 25mm to 810mm

Chemical Composition

The following table shows the chemical composition of 55C8 steel:

Grade C Mn Si S P
55C8 Min 0.50 0.60 0.10 – –
Max 0.60 0.90 0.35 0.35 0.35

Mechanical Properties

PROPERTIES METRIC IMPERIAL
Tensile strength, ultimate 585 MPa 84800 psi
Tensile strength, yield 370 MPa 53700 psi
Modulus of elasticity 190-210 GPa 29700-30458 ksi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Poissons ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 0.3 0.3
Reduction of area 0.53 0.53
Hardness, Brinell 183 183
Hardness, Knoop (converted from Brinell hardness) 204 204
Hardness, Rockwell B (converted from Brinell hardness) 89 89
Hardness, Vickers (converted from Brinell hardness) 192 192
Machinability (based on AISI 1212 steel. as 100 machinability) 65 65

Physical Properties

PROPERTIES METRIC IMPERIAL
Density 7.85 g/cm 3 0.284 lb/in 3

Thermal Properties

THERMAL PROPERTIES METRIC IMPERIAL
Thermal expansion co-efficient (@20°C/68°F) 11 µm/m°C 6.11 µin/in°F
Thermal conductivity 51.9 W/mK 360 BTU in/hr.ft 2 .°F

Supply Cities

Ambattur, Bangalore, Chennai, Chengalpattu, Coimbatore, Dindigul, Guindy, Madurai, Nellore, Hyderabad, Hosur, Tiruvallur, Tirupur, Tuticorin, Andhra Pradesh, Karnataka, Puducherry, Kerala, Kanyakumari, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore, Karur, Nagercoil, Kanchipuram, Karaikudi, Pudukottai, Nagapattinam, Nemili Thiruvanmiyur, Perungudi, Kurichi,  Kakkalur, Keelanagachi, Paramakudi, Thandarai, Alathur, Kodur, Mallur,  Gangaikondan, Sriperumbudur, Oragadam,Irungattukottai, Vallam Vadagal, Siruseri,Eraiyur, Manapparai, Perundurai, Ranipet,  Gummidipoondi, Cheyyar, Manamadurai, Tindivanam ,  Mappedu , Thervoykandigai , Nilakottai, Shoolagiri, Kurubarapalli, Bargur, Thirumudivakkam, Cuddalore, Pillaipakkam.

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Addition to other grades

MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.