AISI 4145 H MODIFIED Quenched & Tempered Bar

Alternative and trade names
AISI 4145 H MODIFIED, UNS G41450
Want to keep this datasheet? Save it now in your required format

Description

AISI 4145H is a chromium – molybdenum low alloy tempered steel. It has improved hardenability and is more is commonly used in the high strength condition with min.110 KSI yield.

Related Standards

Equivalent Materials

This material data has been provided by Sverdrup Steel.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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

38.1 - 508 mm

Show Supplier Material materials with Diameter of 38.1 - 508 mm

Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-20.0 °C

27 J

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

Elongation

23.0 °C

14.5 - 20 %

Show Supplier Material materials with Elongation of 14.5 - 20 %

Hardness, Brinell

23.0 °C

233 - 341 [-]

Show Supplier Material materials with Hardness, Brinell of 233 - 341 [-]

Tensile strength

23.0 °C

896 - 1068 MPa

Show Supplier Material materials with Tensile strength of 896 - 1068 MPa

Yield strength Rp0.2

23.0 °C

689 - 758 MPa

Show Supplier Material materials with Yield strength Rp0.2 of 689 - 758 MPa

Chemical properties

PropertyValue

Carbon

0.43 - 0.48 %

Show Supplier Material materials with Carbon of 0.43 - 0.48 %

Chromium

0.8 - 1.1 %

Show Supplier Material materials with Chromium of 0.8 - 1.1 %

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 4145H is a low alloy steel suitable for downhole drilling tools such as subs, x-overs, drill collars, pup-joints and fishing tools. General engineering applications include components exposed to heavy strain, such as shafts, gear, bolts etc. AISI 4145H can also be used in hardened condition as machine parts exposed to heavy wear.

Heat Treatment

Quenched and Tempered

Welding

Poor, can be welded.