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Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.
Made-to-Order 4140 Alloy Steel Bars
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When an off-the-shelf size won't do, we'll get you the exact dimensions you need.
This versatile alloy steel is used for many parts, such as molds and structural supports. Also called chrome-moly steel, it resists fracturing from repeated stress. These ground bars have undergone a process called decarburization, which removes residue created during manufacturing. As a result, they have a uniform surface that’s good for machining, heat treating for hardening and wear resistance, and finishing. The thickness is oversized for finishing to your exact requirements.
Note: Bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Wd. | Choose a Length | Fabrication | Heat Treatment | Yield Strength, psi | Hardness | Max. Hardness After Heat Treatment | Mechanical Finish | Specs. Met | Per Inch | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1/2" Thick (0.02" to 0.040" Tolerance) | ||||||||||||
| 1" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K611 | 00000 | ||
| 1 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K612 | 0000 | ||
| 2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K613 | 0000 | ||
| 2 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K614 | 0000 | ||
| 3" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K615 | 0000 | ||
| 4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K616 | 0000 | ||
3/4" Thick (0.02" to 0.040" Tolerance) | ||||||||||||
| 1" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K617 | 0000 | ||
| 1 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K618 | 0000 | ||
| 2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K619 | 0000 | ||
| 2 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K621 | 0000 | ||
| 3" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K622 | 0000 | ||
| 4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K623 | 0000 | ||
1" Thick (0.02" to 0.040" Tolerance) | ||||||||||||
| 1" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K624 | 0000 | ||
| 1 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K625 | 0000 | ||
| 2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K626 | 0000 | ||
| 2 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K627 | 0000 | ||
| 3" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K628 | 00000 | ||
| 4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K629 | 00000 | ||
1 1/4" Thick (0.02" to 0.040" Tolerance) | ||||||||||||
| 1 1/4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K631 | 0000 | ||
| 1 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K632 | 0000 | ||
| 2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K633 | 0000 | ||
| 2 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K634 | 0000 | ||
| 3" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K635 | 00000 | ||
| 4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K636 | 00000 | ||
1 1/2" Thick (0.02" to 0.040" Tolerance) | ||||||||||||
| 1 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K637 | 0000 | ||
| 2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K638 | 00000 | ||
| 2 1/2" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K639 | 00000 | ||
| 3" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K641 | 00000 | ||
| 4" | 13" to 90" | Hot Rolled | Annealed | 60,000 | Rockwell C15 (Medium) | Rockwell C32 | Ground | ASTM A829 | 9116K642 | 00000 | ||
