ASTM A Class II Type B high chrome white iron is used in operating environments where abrasion and impact are the wear mechanisms. ASTM A standard has issued the chemical and hardness requirements for abrasion-resistant cast iron material grades, type A, B, C, D. ASTM A – Free download as PDF File .pdf), Text File .txt) or read online for free. Nihard.

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Metallurgy, Plymouth Tube RE: A53 is the part under consideration. These alloys may be made by melting process and shall have microstructures that consist of carbides, martensite, bainite, austenite, and in exceptional cases, minor amounts of graphite or pearlite. Subscribe to Premium Services Searches: Re-hardening is not advised as parts break easily.

ASTM A / AM – 10() Standard Specification for Abrasion-Resistant Cast Irons

I foresee problems with distortion and perhaps even cracking of the finish machined parts. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

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Hardness test shall also be made. Are you using cubic boron nitride tips or carbide tips for machining?

25% Cr of ASTM A532 – Abrasion-resistant cast iron

Click Here to join Eng-Tips and talk with other members! A little less than 1 inch in thickness 24 mm A 1. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Then we asttm harden it after machining?

Historical Version s – view previous versions of standard. Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Are you an Engineering professional? If the issue is that they take longer to machine or they go through tooling faster, can you throw more money at the machine shop to just work through it? Please read our License Agreement regarding materials data and our Privacy Policy. For The shorter, simpler part we called for an as cast hardness of HB.

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Or if you don’t have an account with us yet, then click here to register. Four 16 mm holes drilled in the body about 12 inches mm from the large end with no flange. As a first step, I would temper this casting to drop the hardness to BHNbefore attempting annealing.

Heat treatment shall be done.

This specification deals with abrasion-resistant cast irons used for mining, milling, earth-handling, and manufacturing industries. Hi arunmrao, attached is an image of the part in question, already cast and HRC ish, and needing machining of several features. Combining values from the two systems may result in non-conformance with the standard.

The following conditions for casting will be supplied: You need to check on the current structure, and perhaps do some trials. Please contact us at webmaster matweb.

The castings already are distorted enough to require dimensional compromises. Property Data This page displays only the text astk a material data sheet.

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