ASTM A376 Properties (Chem., Mech. & Rankings) 2022

In this post I'll talk about and give details about ASTM A376. First let's describe it and then have a look at its material's properties.

What is ASTM A376?

ASTM A376 is a Specification for Seamless Austenitic Steel Pipe for High-Temperature Central-Station Service.


Corrosion-Resisting and Heat-Resisting Steels


This specification covers seamless austenitic steel pipe intended for high-temperature central-station service.

Ok let's start with ASTM A376 chemical composition.

Chemical Composition

Grade TP347H


0.04 - 0.10

Mn max.


P max.


S max.


Si max.



9.0 - 13.0


17.0 - 19.0

Learn more about chemical composition.

Now it's the mechanical properties turn:

Yield Strength

Grade TP347H

30 ksi (205 MPa) min.

Learn more about what is yield strength.

Tensile Strength

Grade TP347H

75 ksi (515 MPa) min

Learn more about what is tensile strength.

Elongation (min.) 50 mm

35% (longitudinal).

Learn more about what is elongation.

Reduction of Area (min. %)

Not Required.

Learn more about reduction of area.

Allowable Stress

Depends on the project (And its factor of safety).

Learn more about the what is allowable stress.

My Material's Rank

While engineers will often look for the cheapest material they can use, I took a different approach to material's selection to help newbie students.

I ranked materials according to their yield strengths and ASTM A376 currently ranks 119 in my yield strength index. This means there are other 118 materials that are more resistant.

Note: I've analysed 134 materials in order to create an yield strength index. Check my astm material's comparison post for more details.

ASTM Classroom

Are you having trouble understanding the basics of ASTM?

What is the difference between Code, Standard & Specification?

This video will walk you through:



When you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information.

That gives credibility to your paper and it is sometimes required in higher education.

To make your life (and citation) easier just copy & paste the information below into your assignment or essay:

Luz, Gelson. ASTM A376 Properties (Chem., Mech. & Rankings). Materials Blog. dd mmmm. yyyy. <URL>

Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page (The < and > stay, ok?). This citation format is based on MLA.

Other References

A 262 Practices for Detecting Susceptibility to Intergranular⁣
Attack in Austenitic Stainless Steels⁣
A 941 Terminology Relating to Steel, Stainless Steel,⁣
Related Alloys, and Ferroalloys⁣
A 999/A 999M Specification for General Requirements⁣
for Alloy and Stainless Steel Pipe⁣
E 112 Test Methods for Determining Average Grain Size⁣
E 213 Practice for Ultrasonic Examination of Metal Pipe⁣
and Tubing⁣
E 381 Method of Macroetch Testing Steel Bars, Billets,⁣
Blooms, and Forgings⁣
E 426 Practice for Electromagnetic (Eddy-Current) Examination⁣
of Seamless and Welded Tubular Products, Austenitic⁣
Stainless Steel and Similar Alloys⁣



Materials: ASTM A376 Properties (Chem., Mech. & Rankings) 2022
ASTM A376 Properties (Chem., Mech. & Rankings) 2022
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