ASTM A860 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022

In this post I'll talk about and give details about ASTM A860. First let's describe it and then have a look at its material's properties.

What is ASTM A860?

ASTM A860 is a Specification for Wrought High-Strength Low-Alloy Steel Butt-Welding Fittings

Category

Fittings

Scope

This specification covers wrought high-strength low alloy steel butt-welding fittings of seamless and electric fusion welded construction. These fittings are for use in high pressure gas and oil transmission and distribution systems.

Ok let's start with ASTM A860 chemical composition.

Chemical Composition

All Grades

C max.

0.20

Mn

1.00 - 1.45

P max.

0.030

S max.

0.010

Si

0.15 - 0.40

Ni max.

0.50

Cr max.

0.30

Mo max.

0.25

Cu max.

0.35

Ti max.

0.05

V max.

0.10

Nb max.

0.04

V + Nb max.

0.12

Al max.

0.06

Learn more about chemical composition.

Now it's the mechanical properties turn:

Yield Strength

Grade WPHY 65

65 ksi (450 MPa) min.

Learn more about what is yield strength.

Tensile Strength

Grade WPHY 65

77 - 102 ksi (530 - 705 MPa)

Learn more about what is tensile strength.

Elongation (min.) 50 mm

0.28.

Learn more about what is elongation.

Reduction of Area (min. %)

Not Required.

Learn more about reduction of area.

Hardness Requirements

All Grades

22 HRC or 235 HB max.

Learn more about what is hardness.

Impact Requirements

All Grades

40 J avg. And 34J min. at -46°C

Learn more about impact testing (charpy v notch).

Other properties:

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 A860 currently ranks 34 in my yield strength index. This means there are other 33 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 A860 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 530/A 530M Specification for General Requirements for⁣
Specialized Carbon and Alloy Steel Pipe2⁣
A 960 Specification for Common Requirements for⁣
Wrought Steel Piping Fittings2⁣