IS 40C8 Structural and constructional steels

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

Data updates

Latest Update: 2026-05
Total number of updates: 5
Update History
2026-03 2022-08 2019-03 2013-12

This material has 557 properties — only a subset is shown here.

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IS 40C8 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.3500 – 0.4500
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 5517: 2006 / Steels for Hardening and Tempering - Specification

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IS 40C8 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
val1
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Service Temperature
≤ 425 °C
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This material has 557 properties — only a subset is shown here.

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IS 40C8 Heat Treatments


  • Annealed: 830-860°C; Subcritical annealed: 650-700°C; Normalized: 830-860°C; Hardened: 830-860°C; Tempered: max. 660°C;
  • Hardened and quenched: hardened: 830-860°C, quenched in an oil

IS 40C8 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
540 — 1300 MPa
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Brinell Hardness (HB)
≤ 240
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Elongation, A
≥ 3 %
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Yield Strength, Rp0.2
val1
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MPa
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Grain Size
val1
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Impact Energy
val1
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J
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Reduction of Area
val1
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%
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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IS 40C8 International Equivalent Materials


Showing 15 of 212 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
GOST
COUNTRY / PRODUCER
Russia
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 212Cross References

  • 59Composition
  • 76Mechanical Properties
  • 4Physical Properties
  • 4Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • 42Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 160Total Suppliers