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Multipurpose 4140 Alloy Steel Hex Bars
- Yield Strength: 60,000 psi
- Hardness: Rockwell B90 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Fabrication: Cold Worked
- Specifications Met: ASTM A108, ASTM A304
Also known as chrome-moly steel, this versatile alloy is used for a wide range of parts, such as gears and shafts. It resists fracturing from repeated stress. For additional wear resistance, it can also be surface hardened with heat treating. These hex bars have been manufactured to meet ASTM standards for quality and performance.
Note: Hex bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
| Wd., mm | Wd. Tolerance, mm | Heat Treatment | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
| 5 | -0.051 to 0 | Annealed (Softened) | 000000 | |||
| 7 | -0.051 to 0 | Annealed (Softened) | 000000 | |||
| 10 | -0.051 to 0 | Annealed (Softened) | 000000 | |||
| 12 | -0.051 to 0 | Annealed (Softened) | 000000 | |||
| 15 | -0.051 to 0 | Annealed (Softened) | 000000 | |||
| 20 | -0.013 to 0 | Annealed (Softened) | 000000 | |||
| 27 | -0.013 to 0 | Annealed (Softened) | 000000 | |||
| 50 | -0.102 to 0 | Annealed (Softened) | 000000 |