AISI 4140 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: United States / AISI
Indicative price:

Data updates

Latest Update: 2024-06
Total number of updates: 13
Update History

This material has 1164 properties — only a subset is shown here.

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AISI 4140 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.38 – 0.43
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.80 – 1.10
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.35
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
Pb
VALUE
val1
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UNIT
%
CAS NUMBER
7439-92-1
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

SAE J 404: 2009 / Chemical compositions of SAE alloy steels

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AISI 4140 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Electrical Resistivity
0.22 Ω∙mm²/m
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Density
val1
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kg/dm³
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Electrical Conductivity
val1
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S/m
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Poisson Coefficient
val1
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This material has 1164 properties — only a subset is shown here.

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AISI 4140 Heat Treatments


  • Annealed: 790-845°C; Hardened: 845-900°C, quenching in oil.
  • Hardened and tempered: Hardened by quenching in oil from 843 ± 6°C (1550 ± 10°F) and tempered for not less than 30 minutes at not lower than 482°C (900°F).

AISI 4140 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
621 — 1516 MPa
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Brinell Hardness (HB)
187 — 241
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Elongation, A
≥ 5 %
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Reduction of Area
val1
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%
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Rockwell Hardness (HR)
val1
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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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AISI 4140 International Equivalent Materials


Showing 15 of 439 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
UNS
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
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IRAM
COUNTRY / PRODUCER
Argentina
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
KS
COUNTRY / PRODUCER
Korea
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
MIL
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
NBR
COUNTRY / PRODUCER
Brazil
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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  • 439Cross References

  • 82Composition
  • 66Mechanical Properties
  • 25Physical Properties
  • 30Heat Treatment
  • 27Metallography
  • 6Machinability

  • 6Stress-Strain
  • 1Formability
  • 22Fatigue
  • 7Fracture
  • -Creep

  • 3Joints
  • -Coatings
  • 97Dimensions
  • 3Tribology

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

  • 350Total Suppliers