Grade

Grain Size Definition

Grain Size Definition

Definition Range of Average Grain Size  Typical Metallurgraphic Picture (1500X)
Ultrafine 0.3~<0.6 µm Ultrafine Grain Size Definition
Submicron 0.7~<0.8 µm Submicron Grain Size Definition
Fine 0.8~<1.0 µm Fine Grain Size Definition
Medium- 1.1~<1.6 µm Medium- Grain Size Definition
Medium 1.6~<2.5 µm Medium Grain Size Definition
Coarse 2.5~6.0 µm Coarse Grain Size Definition
Extra Coarse >6.0 µm Extra Coarse Grain Size Definition