AISI 4140 MODIFIED Quenched & Tempered Tube

Alternative and trade names
AISI 4140 MODIFIED, UNS G41400
Want to keep this datasheet? Save it now in your required format

Description

AISI 4140 is a 1% chromium – molybdenum medium hardenability general purpose high tensile steel.

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

127 - 381 mm

Show Supplier Material materials with Diameter of 127 - 381 mm

Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-46.0 °C

27 J

Show Supplier Material materials with Charpy impact energy, V-notch of 27 J

Elongation

23.0 °C

20 %

Show Supplier Material materials with Elongation of 20 %

Hardness, Brinell

23.0 °C

217 - 235 [-]

Show Supplier Material materials with Hardness, Brinell of 217 - 235 [-]

Tensile strength

23.0 °C

690 MPa

Show Supplier Material materials with Tensile strength of 690 MPa

Yield strength Rp0.2

23.0 °C

551 - 665 MPa

Show Supplier Material materials with Yield strength Rp0.2 of 551 - 665 MPa

Chemical properties

PropertyValue

Carbon

0.38 - 0.43 %

Show Supplier Material materials with Carbon of 0.38 - 0.43 %

Chromium

0.9 - 1.2 %

Show Supplier Material materials with Chromium of 0.9 - 1.2 %

Iron

Balance

Manganese

0.75 - 1 %

Show Supplier Material materials with Manganese of 0.75 - 1 %

Molybdenum

0.15 - 0.35 %

Show Supplier Material materials with Molybdenum of 0.15 - 0.35 %

Phosphorus

0.03 %

Show Supplier Material materials with Phosphorus of 0.03 %

Silicon

0.15 - 0.35 %

Show Supplier Material materials with Silicon of 0.15 - 0.35 %

Sulfur

0.025 %

Show Supplier Material materials with Sulfur of 0.025 %

Technological properties

Property
Application areas

AISI 4140 modified is a low alloy hardened and tempered steel suitable for the manufacture of oil and gas downhole tools used in production and completion processes. General Engineering applications include construction components exposed to heavy strain, such as shafts, gear, bolts etc. AISI 4140 can also be used in hardened condition as machine parts exposed to heavy wear.

Heat Treatment

Hardened at 850°C followed by water quenching. Tempering at min. 650°C, cooled in air.

Welding

Moderate, can be welded.