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Multipurpose 4140 Alloy Steel Bars

- Yield Strength: 60,000 psi
- Hardness: Rockwell B90 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C60
- Specifications Met: ASTM A108
Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
3" Lg. | ||||||
---|---|---|---|---|---|---|
Thick. | Thick. Tolerance | Wd. | Heat Treatment | Straightness Tolerance | Each | |
3" | -0.01" to 0.13" | 3" | Annealed (Softened) | 3/16" per 10 ft. | 00000000 | 000000 |
Tight-Tolerance Hardened Multipurpose 4140 Alloy Steel Sheets and Bars

Also known as flat stock, the thickness on these sheets and bars is held to a tight tolerance. They are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, this versatile 4140 alloy steel is used for many parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Thick. | Thick. Tolerance | Wd. | Length | Mechanical Finish | Each | |
3" | -0.002" to 0.002" | 3" | 3" | Precision Ground | 000000000 | 0000000 |