ASTM A395 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022

In this post I'll talk about and give details about ASTM A395. First let's describe it and then have a look at its material's properties.

What is ASTM A395?

ASTM A395 is a Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.


Wrought Iron, Cast Iron, and Malleable Iron


This specification covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450°F. For temperatures above 450°F and up to 650°F, only Grade 60−40−18 castings are suitable.

Ok let's start with ASTM A395 chemical composition.

Chemical Composition

C min.


Si max.


P max.


Learn more about chemical composition.

Now it's the mechanical properties turn:

Yield Strength

Grade 60-40-18

40 ksi (275 MPa) min.

Learn more about what is yield strength.

Tensile Strength

Grade 60-40-18

60 ksi (415 MPa) min.

Learn more about what is tensile strength.

Elongation (min.) 50 mm


Learn more about what is elongation.

Reduction of Area (min. %)

Not Required.

Learn more about reduction of area.

Hardness Requirements

Grade 60-40-18

143 - 187 HB

Learn more about what is hardness.

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 A395 currently ranks 73 in my yield strength index. This means there are other 72 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 A395 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 247 Test Method for Evaluating the Microstructure of⁣
Graphite in Iron Castings⁣
A 370 Test Methods and Definitions for Mechanical Testing⁣
of Steel Products⁣
A 536 Specification for Ductile Iron Castings⁣
A 732/A 732M Specification for Castings, Investment,⁣
Carbon and Low Alloy Steel for General Application,⁣
and Cobalt Alloy for High Strength at Elevated Temperatures⁣
A 834 Specification for Common Requirements for Iron⁣
Castings for General Industrial Use⁣
E 8 Test Methods for Tension Testing of Metallic Materials⁣
E 10 Test Method for Brinell Hardness of Metallic Materials⁣
E 186 Reference Radiographs for Heavy-Walled (2 to⁣
41⁄2 in. [51 to 114 mm]) Steel Castings⁣
E 280 Reference Radiographs for Heavy-Walled (41⁄2 to⁣
12 in. [114 to 305 mm]) Steel Castings⁣
E 446 Reference Radiographs for Steel Castings up to 2 in.⁣
[51 mm] in Thickness⁣
E 689 Reference Radiographs for Ductile Iron Castings⁣
E 1806 Practice for Sampling Steel and Iron for Determination⁣
of Chemical Composition⁣
F 1476 Specification for Performance of Gasketed⁣
Mechanical Couplings for Use in Piping Applications⁣
F 1548 Specification for the Performance of Fittings for⁣
Use with Gasketed Mechanical Couplings used in Piping⁣



Materials: ASTM A395 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022
ASTM A395 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022
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