CUTTING TOOLS

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CUTTING TOOLS
Drilling and centring tools
Drilling strategy for ALPHA ® -XD
Material to be machined Cutting speed VR Feed f (mm) for Ø (mm)
v c (m/min)
Mat. Designation Drilled depth Working Guideline 3–4 4–6 6–9 9–14 14–20
group
range value
1.1.1 Machining steels up to 10xd 100–140 120 12 0.09–0.13 0.11–0.19 0.17–0.27 0.24–0.35 0.32–0.43
>10–16xd 90–130 111 12 0.08–0.12 0.11–0.18 0.17–0.26 0.24–0.34 0.31–0.42
over 16xd 80–120 99 10 0.07–0.11 0.10–0.16 0.15–0.23 0.21–0.30 0.27–0.37
1.1.2 Soft structural steels up to 10xd 100–140 120 10 0.07–0.10 0.09–0.16 0.14–0.22 0.20–0.29 0.26–0.36
up to 550 N/mm 2 >10–16xd 90–130 111 9 0.06–0.09 0.08–0.14 0.12–0.19 0.18–0.25 0.23–0.31
over 16xd 80–120 99 8 0.06–0.08 0.07–0.12 0.11–0.17 0.16–0.23 0.20–0.28
1.1.3 Steel & cast steel up to 10xd 90–120 103 11 0.08–0.12 0.10–0.17 0.16–0.25 0.22–0.32 0.29–0.40
550 to 700 N/mm 2 >10–16xd 80–110 95 11 0.08–0.11 0.10–0.17 0.15–0.24 0.22–0.31 0.28–0.38
over 16xd 70–100 85 9 0.07–0.10 0.09–0.15 0.14–0.21 0.19–0.28 0.25–0.34
1.2 Steel & cast steel up to 10xd 70–110 88 10 0.07–0.11 0.10–0.16 0.14–0.23 0.20–0.29 0.26–0.36
700 to 1000 N/mm 2 >10–16xd 70–100 81 10 0.07–0.10 0.09–0.15 0.14–0.22 0.20–0.28 0.26–0.35
over 16xd 60– 90 73 9 0.06–0.09 0.08–0.14 0.12–0.19 0.18–0.25 0.23–0.31
1.3 Steel & cast steel up to 10xd 50– 70 60 8 0.06–0.08 0.08–0.13 0.11–0.18 0.16–0.23 0.21–0.29
1000 to 1300 N/mm 2 >10–16xd 50– 70 56 8 0.06–0.08 0.07–0.12 0.11–0.18 0.16–0.23 0.21–0.28
over 16xd 40– 60 50 7 0.05–0.07 0.07–0.11 0.10–0.16 0.14–0.20 0.19–0.25
1.4 Steel up to 10xd 30– 40 34 6 0.04–0.06 0.06–0.09 0.09–0.14 0.12–0.18 0.16–0.22
1300 to 1600 N/mm 2 >10–16xd 20– 30 28 6 0.04–0.06 0.06–0.09 0.09–0.14 0.12–0.18 0.16–0.22
over 16xd 20– 30 24 5 0.04–0.06 0.05–0.08 0.08–0.12 0.11–0.16 0.14–0.19
1.6.1 Tool steel, up to 10xd 70–100 80 9 0.06–0.09 0.09–0.14 0.13–0.20 0.18–0.26 0.24–0.32
unalloyed >10–16xd 60– 90 74 9 0.06–0.09 0.08–0.14 0.13–0.20 0.18–0.26 0.23–0.32
over 16xd 60– 80 66 8 0.06–0.08 0.07–0.12 0.11–0.18 0.16–0.23 0.21–0.28
1.6.2 Tool steel, up to 10xd 70–100 80 10 0.07–0.11 0.10–0.16 0.14–0.23 0.20–0.29 0.26–0.36
low-alloy >10–16xd 60– 90 74 10 0.07–0.10 0.09–0.15 0.14–0.22 0.20–0.28 0.26–0.35
over 16xd 60– 80 66 9 0.06–0.09 0.08–0.14 0.12–0.19 0.18–0.25 0.23–0.31
1.6.3 Tool steel, up to 10xd 60– 80 66 9 0.06–0.09 0.08–0.13 0.12–0.19 0.17–0.25 0.22–0.31
high-alloy >10–16xd 50– 70 61 8 0.06–0.09 0.08–0.13 0.12–0.19 0.17–0.24 0.22–0.30
over 16xd 50– 70 54 7 0.05–0.08 0.07–0.12 0.11–0.17 0.15–0.22 0.20–0.27
1.7.1 Stainless steel up to 10xd 40– 50 43 7 0.05–0.07 0.07–0.11 0.10–0.16 0.14–0.20 0.19–0.25
ferritic, martensitic >10–16xd 30– 50 40 7 0.05–0.07 0.07–0.11 0.10–0.16 0.14–0.20 0.18–0.25
over 16xd 30– 40 35 6 0.04–0.06 0.06–0.10 0.09–0.14 0.13–0.18 0.16–0.22
1.7.2 Stainless steel, up to 1 0xd 60– 80 66 7 0.05–0.07 0.07–0.11 0.10–0.16 0.14–0.20 0.19–0.25
austenitic, >10–16xd 50– 70 61 7 0.05–0.07 0.07–0.11 0.10–0.16 0.14–0.20 0.18–0.25
sulphur containing over 16xd 50– 70 54 6 0.04–0.06 0.06–0.10 0.09–0.14 0.13–0.18 0.16–0.22
1.7.3 Stainless steel up to 10xd 40– 50 43 5 0.04–0.05 0.05–0.08 0.07–0.11 0.10–0.15 0.13–0.18
austenitic >10–16xd 30– 50 40 5 0.04–0.05 0.05–0.08 0.07–0.11 0.10–0.15 0.13–0.18
over 16xd 30– 40 35 5 0.03–0.05 0.04–0.07 0.06–0.10 0.09–0.13 0.12–0.16
3.1 Cast iron up to 10xd 100–140 120 14 0.10–0.15 0.14–0.23 0.21–0.32 0.29–0.42 0.38–0.52
GG10–GG20 >10–16xd 90–130 111 12 0.08–0.12 0.11–0.19 0.17–0.27 0.24–0.35 0.31–0.43
over 16xd 80–120 99 11 0.08–0.11 0.10–0.17 0.15–0.24 0.22–0.31 0.28–0.38
3.2 Cast iron up to 10xd 80–120 100 14 0.10–0.15 0.14–0.23 0.21–0.32 0.29–0.42 0.38–0.52
GG25–GG40 >10–16xd 80–110 93 12 0.08–0.12 0.11–0.19 0.17–0.27 0.24–0.35 0.31–0.43
over 16xd 70–100 83 11 0.08–0.11 0.10–0.17 0.15–0.24 0.22–0.31 0.28–0.38
3.3.1 Cast iron up to 10xd 80–120 100 14 0.10–0.15 0.14–0.23 0.21–0.32 0.29–0.42 0.38–0.52
GGG40–GGG50 >10–16xd 80–110 93 12 0.08–0.12 0.11–0.19 0.17–0.27 0.24–0.35 0.31–0.43
3.3.2 Cast iron up to 10xd 60– 90 75 13 0.09–0.13 0.12–0.20 0.18–0.28 0.26–0.37 0.33–0.45
GGG60–GGG90 >10–16xd 60– 80 69 10 0.07–0.11 0.10–0.16 0.15–0.23 0.21–0.30 0.27–0.37
over 16xd 50– 70 62 9 0.07–0.10 0.09–0.15 0.13–0.21 0.19–0.27 0.24–0.33
5.1 Pure aluminium, up to 10xd 300–430 360 16 0.11–0.17 0.15–0.25 0.23–0.36 0.33–0.47 0.42–0.58
Wrought aluminium alloy >10–16xd 170–240 204 15 0.11–0.16 0.14–0.23 0.21–0.33 0.30–0.43 0.39–0.53
over 16xd 110–160 132 13 0.09–0.14 0.13–0.21 0.19–0.30 0.27–0.39 0.35–0.47
5.2 cast AlSi alloy up to 10xd 210–300 250 16 0.11–0.17 0.15–0.25 0.23–0.36 0.33–0.47 0.42–0.58
10–16xd 170–240 204 15 0.11–0.16 0.14–0.23 0.21–0.33 0.30–0.43 0.39–0.53
over 16xd 110–160 132 13 0.09–0.14 0.13–0.21 0.19–0.30 0.27–0.39 0.35–0.47
5.3 cast AlSi alloy up to 10xd 190–280 230 16 0.11–0.17 0.15–0.25 0.23–0.36 0.33–0.47 0.42–0.58
7–14% Si >10–16xd 170–240 204 15 0.11–0.16 0.14–0.23 0.21–0.33 0.30–0.43 0.39–0.53
over 16xd 110–160 132 13 0.09–0.14 0.13–0.21 0.19–0.30 0.27–0.39 0.35–0.47
6.2 Titanium alloys up to 10xd 30– 40 34 5 0.04–0.05 0.05–0.08 0.07–0.11 0.10–0.15 0.13–0.18
over 700 N/mm 2 >10–16xd 20– 30 25 5 0.03–0.05 0.04–0.07 0.07–0.10 0.09–0.13 0.12–0.17
over 16xd 20– 20 20 4 0.03–0.04 0.04–0.06 0.06–0.09 0.08–0.12 0.11–0.15
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