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BreakingChips

Non-ferrous · ISO N

7075 aluminum speeds and feeds

Also: EN AW-7075, AlZn5.5MgCu, A97075

Starting points from the same engines as the calculators, with no tool or setup picked. The first number is where to start; the range is what the manufacturer charts allow. Open a calculator for your tool, machine and cut.

Draft data: researched from manufacturer charts, not yet reviewed by a machinist.

T6 / T651150 HB

Turning

CutSFMFeed, IPRDepth, in
Finishing1,9521,171–2,733595 m/min0.0070.004–0.0100.18 mm/rev0.0220.004–0.0400.6 mm
Medium1,640984–2,297500 m/min0.0140.007–0.0200.34 mm/rev0.0850.012–0.1582.2 mm
Roughing1,542925–2,159470 m/min0.0170.010–0.0240.43 mm/rev0.1490.060–0.2373.8 mm

For a UNCOATED carbide insert, general stability, 15 min tool life.

Milling, solid carbide end mill

Speed 800 (500–1,500) SFM · 244 m/min

Chip load per tooth, before chip thinning
Cutter ØIPTmm/tooth
1/8"0.00110.0010–0.00110.027
1/4"0.00210.0020–0.00220.053
1/2"0.00410.0040–0.00420.104
3/4"0.00730.0060–0.00850.184
1"0.00810.0070–0.00920.206

Drilling, Ø1/2" at 3×D

DrillSFMFeed, IPR
HSS25089–3000.01050.0070–0.0150
Cobalt257177–3750.01050.0070–0.0150
Solid carbide, through-coolant651260–1,5490.01350.0080–0.0190

Feeds scale with drill Ø (0.5" here): the drilling calculator sets them for yours.

Tapping

Cut tap
55 (30–80) SFM
Form tap
70 (45–90) SFM

Sources