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This specification covers unalloyed molybdenum and molybdenum alloy bar, rod, and wire as follows:
Molybdenum 360—Unalloyed vacuum arc-cast molybdenum.
Molybdenum 361—Unalloyed powder metallurgy molybdenum.
Molybdenum Alloy 363—Vacuum arc-cast molybdenum–0.5 % titanium–0.1 % zirconium (TZM) alloy.
Molybdenum Alloy 364—Powder metallurgy molybdenum–0.5 % titanium–0.1 % zirconium (TZM) alloy.
Molybdenum 365—Unalloyed vacuum arc-cast molybdenum, low carbon.
Molybdenum Alloy 366—Vacuum arc-cast molybdenum, 30 % tungsten alloy.
The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
Element | Composition, % | |||||
|---|---|---|---|---|---|---|
| Material Number | ||||||
| 360 | 361 | 363 | 364 | 365 | 366 | |
| C | 0.030 max | 0.010 max | 0.010 – 0.030 | 0.010 – 0.040 | 0.010 max | 0.030 max |
| O, maxA | 0.0015 | 0.0070 | 0.0030 | 0.030 | 0.0015 | 0.0025 |
| N, maxA | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 |
| Fe, max | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 |
| Ni, max | 0.002 | 0.005 | 0.002 | 0.005 | 0.002 | 0.002 |
| Si, max | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 |
| Ti | … | … | 0.40–0.55 | 0.40–0.55 | … | … |
| W | … | … | … | … | … | 27–33 |
| Zr | … | … | 0.06–0.12 | 0.06–0.12 | … | … |
| Mo | balance | balance | balance | balance | balance | balance |
Note :
A. Pending approved methods of analysis, deviations from these limits alone shall not be cause for rejection.
| Type | TemperB | Diameter, in. (mm) | Tensile Strength, min, ksi (MPa) | Yield Strength, 0.2 % Offset, min, ksi (MPa) | Elongation in 1 in. (50 mm) min, % | Diamond Pyramid Hardness (DPH), Vickers-10 kg |
|---|---|---|---|---|---|---|
| 360,361, 365 | SR | 0.020 to 1⁄8 (0.51 to 3.18),incl | 85 (585) | 65 (450) | 15C | … |
| over 1⁄8 to 13⁄32 (3.18 to 10.32) | 75 (515) | 55 (380) | 15 | … | ||
| over 13⁄32 to 7⁄8 (10.32 to 22.2) | 90 (620) | 75 (515) | 18 | 230 to 280 | ||
| over 7⁄8 to 1 1⁄8 (22.2 to 28.6) | 85 (585) | 70 (480) | 15 | 225 to 270 | ||
| over 1 1⁄8 to 1 7⁄8 (28.6 to 47.6) | 75 (515) | 65 (450) | 10 | 215 to 260 | ||
| over 1 7⁄8 to 2 7⁄8 (47.6 to 73.0) | 70 (480) | 60 (415) | 10 | 210 to 250 | ||
| over 2 7⁄8 to 3 1⁄2 (73.0 to 88.9) | 65 (450) | 55 (380) | 10 | 205 to 240 | ||
| 363, 364 | SR | 3/16 to 7⁄8 (4.76 to 22.2),incl | 115 (790) | 100 (690) | 18 | 260 to 320 |
| over 7⁄8 to 1 1⁄8 (22.2 to 28.6) | 110 (760) | 95 (655) | 15 | 250 to 310 | ||
| over 1 1⁄8 & to 1 7⁄8 (28.6 to 47.6) | 100 (690) | 85 (585) | 10 | 245 to 300 | ||
| over 1 7⁄8 to 2 7⁄8 (47.6 to 73.0) | 90 (620) | 80 (550) | 10 | 240 to 290 | ||
| over 2 7⁄8 to 3 1⁄2 (73.0 to 88.9) | 85 (585) | 75 (515) | 5 | 235 to 285 | ||
| 366 | SR | 3⁄16 to 7⁄8 (4.76 to 22.2),incl | 95 (655) | 80 (550) | 5 | 240 to 300 |
| over 7⁄8 to 1 1⁄8(22.2 to 28.6) | 90 (620) | 75 (515) | 4 | 235 to 300 | ||
| over 1 1⁄8 & to 1 7⁄8 (28.6 to 47.6) | 85 (585) | 70 (480) | 3 | 230 to 290 | ||
| over 1 7⁄8 to 2 7⁄8 (47.6 to 73.0) | 80 (550) | 65 (450) | 3 | 230 to 290 | ||
| over 2 7⁄8 to 3 1/2 (73.0 to 88.9) | 75 (515) | 60 (415) | 2 | 225 to 290 | ||
| 360 | RX | Under 2 (50.8) | 60 (415) | 35 (240) | 20 | 200 max |
| 2 to 3 1/2 (50.8 to 88.9) | 55 (380) | 25 (170) | 20 | 200 max | ||
| 363, 364 | RX | Under 2 (50.8) | 80 (550) | 55 (380) | 20 | 215 max |
| 2 to 3 1/2 (50.8 to 88.9) | 75 (515) | 45 (310) | 10 | 215 max |
Note :
A. Mechanical properties of all bars, and rods other than round, shall be as agreed upon between the manufacturer and the purchaser.
B. SR = stress-relieved; RX = essentially fully recrystallized.
C. The gage length is 10 in. (254 mm) for rods 0.020 to 1⁄8 in. (0.51 to 3.18 min) in diameter only. All other elongation values are for 1-in. (25-mm) gage lengths.