AISI 4130 MODIFIED Quenched & Tempered Bar

Alternative and trade names
AISI 4130 MODIFIED, UNS G41300
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Description

AISI 4130 is a low alloy C-steel containing chromium and molybdenum as strengthening agents. It has low carbon content, and hence it can be welded easily. It is supplied as round bar commonly in the hardened and tempered condition with a hardness of 18-22 HRc.

Related Standards

Equivalent Materials

This material data has been provided by Sverdrup Steel.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

Dimension

PropertyValue

Diameter

76.2 - 508 mm

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Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-32.0 °C

42 J

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Elongation

23.0 °C

17 - 18 %

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Hardness, Rockwell C

23.0 °C

22 [-]

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Tensile strength

23.0 °C

585 - 655 MPa

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Yield strength Rp0.2

23.0 °C

414 - 517 MPa

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Chemical properties

PropertyValue

Carbon

0.28 - 0.33 %

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Chromium

0.8 - 1.1 %

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Iron

Balance

Manganese

0.4 - 0.6 %

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Molybdenum

0.15 - 0.25 %

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Phosphorus

0.03 %

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Silicon

0.15 - 0.35 %

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Sulfur

0.035 %

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Technological properties

Property
Application areas

AISI 4130 is a low alloyed hardened and tempered steel used for Oil and gas drilling and production equipment – wellhead and Christmas tree equipment.

Heat Treatment

Hardened at 860°C followed by water quenching. Tempering at min. 650°C, cooled in air.

Welding

Good.