ASTM A335 Properties (Chem., Mech. & Rankings) 2022

In this post I'll talk about and give details about ASTM A335. First let's describe it and then have a look at its material's properties.

What is ASTM A335?

ASTM A335 is a Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service.


Steel Pipe


This specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service.

Ok let's start with ASTM A335 chemical composition.

Chemical Composition

Grade P11


0.05 - 0.15


0.30 - 0.60

P max.


S max.



0.50 - 1.00


1.00 - 1.50


0.44 - 0.65

Learn more aboutĀ chemical composition.

Now it's the mechanical properties turn:

Yield Strength

Grade P91

60 ksi (415 MPa) min.

Learn more aboutĀ what is yield strength.

Grade P11

30 ksi (205 MPa) min.

Tensile Strength

Grade P91

85 ksi (585 MPa) min.

Learn more aboutĀ what is tensile strength.

Grade P11

60 ksi (415 MPa) min.

Elongation (min.) Grade P91


Learn more aboutĀ what is elongation.

Reduction of Area (min. %)

Not Required.

Learn more aboutĀ reduction of area.

Hardness Requirements

Grade P91

250 HB or 265HV max.

Learn more aboutĀ what is hardness.


7800 - 8000 kg/m3 (around 7.9 g/cm3 or 0.285 lb/in3).

Learn more aboutĀ density.

Elastic Modulus

190 GPa (27557 ksi) - 210GPa (30458 ksi).

Learn more about theĀ Elastic Modulus.

Poisson's Ratio

0.27 ā€“ 0.30.

Learn more about theĀ poisson ratio.

Allowable Stress

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

Learn more about theĀ 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 A335 currently ranks 38Ā in my yield strength index. This means there are other 37 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.

Details and PDF


  1. Go to this page.
  2. Type the name of the standard you are looking for in the search box. Tip: Don't forget to include "ASTM" as a keyword.
  3. Read the details about the standard or download the PDF.

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 A335 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 999/A 999M Specification for General Requirementsā£
for Alloy and Stainless Steel Pipeā£
E 213 Practice for Ultrasonic Examination of Metal Pipeā£
and Tubingā£
E 309 Practice for Eddy-Current Examination of Steelā£
Tubular Products Using Magnetic Saturationā£
E 381 Method of Macroetch Testing Steel Bars, Billets,ā£
Blooms, and Forgingsā£
E 527 Practice for Numbering Metals and Alloys in theā£
Unified Numbering System (UNS)ā£
E 570 Practice for Flux Leakage Examination of Ferromagneticā£
Steel Tubular Productsā£


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Materials: ASTM A335 Properties (Chem., Mech. & Rankings) 2022
ASTM A335 Properties (Chem., Mech. & Rankings) 2022
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