ASTM A231 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022

In this post I'll talk about and give details about ASTM A231. First let's describe it and then have a look at its material's properties.

What is ASTM A231?

ASTM A231 is a Specification for Chromium-Vanadium Alloy Steel Spring Wire.

Category

Steel Flanges, Fittings, Valves, and Parts

Scope

This specification covers round chromium-vanadium alloy steel spring wire having properties and quality intended for the manufacture of springs used at moderately elevated temperatures.

Ok let's start with ASTM A231 chemical composition.

Chemical Composition

C

0.48 - 0.53

Mn

0.70 - 0.90

P max.

0.040

S max.

0.040

Si

0.15 - 0.35

Cr

0.80 - 1.10

V min.

0.15

Learn more about chemical composition.

Now it's the mechanical properties turn:

Tensile Strength

12.00 mm

1320 - 1460 MPa

Learn more about what is tensile strength.

Density

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

Learn more about density.

Elastic Modulus

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

Learn more about the Elastic Modulus.

Poisson's Ratio

0.27 – 0.30.

Learn more about the poisson ratio.

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 A231 currently ranks 143 in my yield strength index. This means there are other 142 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

Instructions:

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:

References

Citation

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 A231 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. 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 370 Test Methods and Definitions for Mechanical Testing⁣
of Steel Products⁣
A 700 Practices for Packaging, Marking, and Loading⁣
Methods for Steel Products for Domestic Shipment⁣
A 751 Test Methods, Practices, and Terminology for⁣
Chemical Analysis of Steel Products⁣
A 752 Specification for General Requirements for Wire⁣
Rods and Coarse Round Wire, Alloy Steel⁣
E 29 Practice for Using Significant Digits in Test Data to⁣
Determine Conformance with Specifications⁣