Specifications of Grade for Round Tools

Specification of Grade

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Class Grade ISO code Grain size Binder content TRS Hardness
HRA		 Hardness
Hv		 Fracture toughness Young's modules
(㎛) (wt%) (GPa) (GPa) (MPa・m1/2) (GPa)
Ultra micro grain AF209 --- 0.2 9.0 4.0 93.5 20.4 5.5 610
AF308 --- 0.3 8.0 3.8 93.6 19.4 6.0 610
AF310* --- 0.3 10.0 4.1 93.0 18.1 7.3 590
AF312 --- 0.3 12.0 4.4 92.5 17.3 8.3 570
Micro grain AF505* --- 0.5 5.0 3.6 93.6 20.1 6.7 650
AF510 --- 0.5 10.0 4.0 92.4 17.0 8.2 ---
AF512 --- 0.5 12.0 4.4 92.0 16.3 9.0 ---
AF513 --- 0.5 13.0 4.2 91.4 15.6 8.6 560
Fine grain AF805 K01 0.8 5.0 3.3 93.2 17.7 6.3 660
AF806* K10 0.8 6.0 3.5 93.0 17.6 7.5 640
AF810 K20 0.8 10.0 3.8 91.4 15.2 9.9 ---
AF906 K10 0.9 6.0 3.4 92.4 17.3 6.5 ---
Specification of Grade

Grade Recommendation by Application

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Grade Stocked items Application Work Material
Drill Endmill Reamer Soft Steel General steel Hardened Steel Stainless Steel Titanium Alloy Inconel Cast iron Aluminium Alloy Copper Alloy
AF209 ● ● ○ ○ ◎ ◎ ◎
AF308 ● ● ○ ○ ◎
AF312 ● ● ● ○ ○
AF510 ● ● ◎ ◎ ○ ○ ○ ○ ○ ○ ○
● ◎ ◎ ○ ○ ○ ◎
AF512 ● ● ◎ ◎ ○ ◎ ◎ ◎
AF513 ● ● ● ○ ○ ○
● ○ ○ ○
AF805 ● ● ● ◎ ◎ ◎
● ○ ○ ○ ○ ◎ ◎ ◎
AF810 ● ◎ ◎ ○ ○ ◎ ◎ ○
● ○ ○ ○ ○ ○ ○
AF906 ● ● ● ○ ○ ◎ ◎ ◎ ○ ○
● ○ ○ ○ ○ ◎ ◎ ◎ ○ ○
Standard Lineup for Blanks for Round Tools