AISI 4130 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country/Standard: United States / AISI

Data updates

Latest Update: 2026-01

Total number of updates: 25

Update History

2025-08 2025-03 2024-07 2024-04 2024-02 2024-01 2023-12 2023-11 2022-08 2021-11 2020-11 2020-08 2020-07 2020-06 2019-09 2019-06 2018-02 2017-08 2017-05 2017-04 2016-06 2016-05 2016-03 2014-11

This material has 1797 properties — only a subset is shown here.

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AISI 4130 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.28 – 0.33

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

0.80 – 1.10

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

≤ 0.35

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-92-1

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

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

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AISI 4130 Physical Properties

Temperature

≤ 0°C 0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Compression Modulus

200 GPa

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Shear Modulus

val1 GPa

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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Coefficient of Thermal Expansion (CTE)

val1 10^-6/°C

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Thermal Conductivity

val1 W/(m∙°C)

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Electrical Resistivity

0.223 Ω∙mm²/m

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Electrical Conductivity

val1 S/m

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This material has 1797 properties — only a subset is shown here.

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AISI 4130 Heat Treatments

Hardenability of Each Heat shall be J 5/16 inch (7.9 mm) = 34 HRC minimum and J 8/16 inch (12.7 mm) = 27 HRC minimum; steel shall be normalized at 927 ± 6°C (1700 ± 10°F) and the test specimen austenitized at 871 ± 6°C (1600 ± 10°F).
Hardening: Hardened by quenching in oil from 871 ± 6°C (1600 ± 10°F), and tempered for not less than 30 minutes at not lower than 482°C (900°F).

AISI 4130 Mechanical Properties

Temperature

≤ 0°C 0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Compression Yield Strength

val1 MPa

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Tensile Strength

480 — 1379 MPa

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Elongation, A

5 %

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Reduction of Area

val1 %

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Impact Energy

val1 J

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Brinell Hardness (HB)

187 — 241

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Rockwell Hardness (HR)

val1

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Grain Size

val1

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433 Cross References

216 Composition
240 Mechanical Properties
90 Physical Properties
23 Heat Treatment
4 Metallography
3 Machinability

48 Stress-Strain
3 Formability
70 Fatigue
- Fracture
- Creep

17 Joints
- Coatings
283 Dimensions
4 Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

363 Total Suppliers