IS C55Mn75 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: India / IS

Data updates

Latest Update: 2023-01
Total number of updates: 3
Update History
2019-03 2013-12

This material has 324 properties — only a subset is shown here.

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IS C55Mn75 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.5000 – 0.6000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.6000 – 0.9000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.0350
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

IS 9175-8: 1985 / Specification for Rationalized Steels for Automobile and Ancillary Industry, Mechanical and Physical Properties - Part 8 :55C8 Grade Steel

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IS C55Mn75 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 324 properties — only a subset is shown here.

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IS C55Mn75 Heat Treatments

  • Annealed: 810-840°C; Subcritical annealed: 650-700°C; Normalized: 810-840°C; Hardened: 810-840°C; Tempered: 660°C;
  • Hot working: 850-1100°C; Austenitizing: 810-840°C; Quenching medium for hardnening: water or oil; Tempering: Low tempered 180-200°C, High tempered: 550-660°C.

IS C55Mn75 Mechanical Properties


Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
630 — 950 MPa
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Elongation, A
7 %
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Impact Energy
val1
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J
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Brinell Hardness (HB)
170 — 255
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Rockwell Hardness (HR)
val1
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  • 142 Cross References

  • 25 Composition
  • 42 Mechanical Properties
  • 3 Physical Properties
  • 2 Heat Treatment
  • - Metallography
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  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep

  • - Joints
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  • - Dimensions
  • - Tribology

  • - Corrosion
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  • - Weatherability
  • - Irradiation

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