| HAYNES® 230® alloy is similar in machining characteristics to other solid-solution-strengthened nickel-base alloys. These alloys as a group are classified as a moderate to difficult to machine; however, it should be emphasized that they can be machined using conventional methods at satisfactory rates. As these alloys will work-harden rapidly, the keys to successful machining are to use slower speeds and feeds, and to take heavier cuts than would be used for machining stainless steels. See Haynes International publication H-3159 for more detailed information. |
Normal Roughing (Turning/Facing)
| Use carbide C-2/C-3 grade tool
Speed: 90 surface feet/minute
|
Negative rake square insert, 45° SCEA1
1/32 in. nose radius. Tool holder: 5° negative back and side rakes. Lubricant: Dry2, Oil3 or water-base4,5 |
| Use carbide C-2/C-3 grade tool
Speed: 95-110 surface feet/minute Feed: 0.005-0.007 in./revolution Depth of Cut: 0.040 in. |
Positive rake square insert, if possible,
45° SCEA, 1/32 in. nose radius. Tool holder: 5° positive back and side rakes. Lubricant: Dry or water-base |
| Use high speed steel M-33/M-40 series6/
or T-15 grades* Speed: 10-15 surface feet/minute (200
|
Short, heavy-web drills with 135° crank shaft
point. Thinning of web at point may reduce thrust. Feed (per revolution):
|
| * Carbide drills not recommended, but may be used in some
set-ups. See Haynes International publication H-3159
for details.
Notes: 1 SCEA-Side cutting edge angle, or lead angle of the tool.
2 At any point where dry cutting is recommended, an air jet
directed on the tool may provided
3 Oil coolant should be a premium quality, sulfochlorinated
oil with extreme pressure additives.
4 Water-base coolant should be a 15:1 mix of water with either
a premium quality, sulfochlorinated
5 Water-base coolants may cause chipping or rapid failure of carbide tools in interrupted cuts.
6 M-40 series High Speed Steels include M-41 through M-46 at
time of writing, others may be added,
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