Grain Size Guide: ASTM E112, Number & Properties

Grain Size Guide: ASTM E112, Number & Properties

Short answer: Grain size — counted by ASTM E112 — sets much of a metal’s strength, toughness and formability: finer grains are stronger and tougher, coarser grains form and machine more easily. Controlling it is a core metallurgy lever.

At a Glance

Grain Size Guide: ASTM E112, Number & Properties chart
Figure 1 – Grain Size Guide: ASTM E112, Number & Properties overview.

Counting Grains

ASTM grain size number rises as grains get finer (more grains per area); read it under Metal Metallography Guide and link to Grain Structure Metals e Metal Recrystallization Temperature Guide.

Property Trade-offs

Fine grains raise strength via Metal Strain Hardening Guide and improve toughness; coarse grains favour Metal Machinability Guide and formability. Tie to Metal Creep Guide.

QA & Supply

Document grain practice per Mill Test Certificate Guide and protect via How To Prevent Metal Rust. HXSCO supplies grades by the grain structure you need.

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Tell HXSCO your requirements and we will respond with a competitive quote and lead time.

Perguntas frequentes

What is ASTM grain size?

A standard (E112) numbering the grains per unit area of a metal.

Does finer grain mean stronger?

Yes — Hall-Petch strengthening raises yield with finer grains.

When is coarse grain better?

For machinability and deep forming where toughness is less critical.

How is grain size controlled?

By rolling/forging reduction, recrystallization and cooling rate.

Do you supply by grain size?

HXSCO supplies grades specified to the grain structure your process needs.

Source Grain-Controlled Metal from HXSCO

HXSCO supplies metal graded to the grain size your strength, toughness and formability targets need. Send your spec and quantity for a quote.

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