|
Machinability Comparison
| Carbon Steels |
| 1015 |
72% |
| 1018 |
78% |
| 1020 |
72% |
| 1022 |
78% |
| 1030 |
70% |
| 1040 |
64% |
| 1042 |
64% |
| 1050 |
54% |
| 1095 |
42% |
| 1117 |
91% |
| 1137 |
72% |
| 1141 |
70% |
| 1141 Annealed |
81% |
| 1144 |
76% |
| 1144 Annealed |
85% |
| 1144 Stressproof |
83% |
| 1212 |
100% |
| 1213 |
136% |
| 12L14 |
170% |
| 1215 |
136% |
| |
| Alloy Steels |
| 2355 Annealed |
70% |
| 4130 Annealed |
72% |
| 4140 Annealed |
66% |
| 4142 Annealed |
66% |
| 41L42 Annealed |
77% |
| 4150 Annealed |
60% |
| 4340 Annealed |
57% |
| 4620 |
66% |
| 4820 Annealed |
49% |
| 52100 Annealed |
40% |
| 6150 Annealed |
60% |
| 8620 |
66% |
| 86L20 |
77% |
| 9310 Annealed |
51% |
| |
Stainless Steels
and Super Alloys |
| 302 Annealed |
45% |
| 303 Annealed |
78% |
| 304 Annealed |
45% |
| 316 Annealed |
45% |
| 321 Annealed |
36% |
| 347 Annealed |
36% |
| 410 Annealed |
54% |
| 416 Annealed |
110% |
| 420 Annealed |
45% |
| 430 Annealed |
54% |
| 431 Annealed |
45% |
| 440A |
45% |
| 15-5PH Condition A |
48% |
| 17-4PH Condition A |
48% |
| A286 Aged |
33% |
| Hastelloy X |
19% |
| |
| Tool Steels |
| A-2 |
42% |
| A-6 |
33% |
| D-2 |
27% |
| D-3 |
27% |
| M-2 |
39% |
| O-1 |
42% |
| O-2 |
42% |
| |
| Gray Cast Iron |
| ASTM Class 20 Annealed |
73% |
| ASTM Class 25 |
55% |
| ASTM Class 30 |
48% |
| ASTM Class 35 |
48% |
| ASTM Class 40 |
48% |
| ASTM Class 45 |
36% |
| ASTM Class 50 |
36% |
| |
| Nodular Iron |
| 60-40-18 Annealed |
61% |
| 65-45-12 Annealed |
61% |
| 80-55-06 |
39% |
| |
Aluminum and
Magnesium Alloys |
| Aluminum, Cold Drawn |
360% |
| Aluminum, Cast |
450% |
| Aluminum, Die Cast |
76% |
| Magnesium, Cold Drawn |
480% |
| Magnesium, Cast |
480% |
*Relative machining speed based on 1212 as 100%.
All figures are based on cold-drawn bars in as-drawn condition,
except where noted. |
|
