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AISI 4130 MODIFIED Quenched & Tempered Bar

Alternative and trade names
EN 1.7220, UNS G41300, ASTM 4130
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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

Properties

Dimension

Diameter d

76.2 - 508 mm

Mechanical

Elongation A

17 - 18 % at 20 °C

Hardness, Rockwell C HRC

22 [-] at 20 °C

Impact strength, Charpy notched Ivnot

42 kJ/m² at -32 °C

Tensile strength Rm

585 - 655 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

414 - 517 MPa at 20 °C

Chemical properties

Element

Weight %

Comment

Cr

0.8 - 1.1 %

Mn

0.4 - 0.6 %

C

0.28 - 0.33 %

Mo

0.15 - 0.25 %

Si

0.15 - 0.35 %

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Technological properties

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.

Processing history

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

Welding

Good.

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.