Multipurpose 4140 Alloy Steel Bar
1" Thick, 4" Wide, 3" Long
Thickness | 1" |
Thickness Tolerance | -0.01" to 0.07" |
Length | 3" |
Width | 4" |
Width Tolerance | -0.012" to 0" |
Fabrication | Cold Worked |
Heat Treatment | Annealed |
Yield Strength | 60,000 psi |
Hardness | Rockwell B90 |
Hardness Rating | Medium |
Maximum Hardness After Heat Treatment | Rockwell C60 |
Specifications Met | ASTM A108 |
Appearance | Plain |
Application | Multipurpose |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Coefficient of Thermal Expansion | 7.7 × 10^-6 |
Elongation | 21% |
Heat Treatable | Yes |
Length Tolerance Type | Plus |
Material | 4140 Alloy Steel |
Material Composition | |
Carbon | 0.36% to 0.46% |
Chromium | 0.75% to 1.2% |
Iron | Remainder |
Manganese | 0.65% to 1.1% |
Molybdenum | 0.10% to 0.25% |
Phosphorus | 0.035% Max. |
Silicon | 0.15% to 0.40% |
Sulfur | 0.04% Max. |
Vanadium | 0.05% to 0.15% |
Maximum Temperature | Not Rated |
Minimum Temperature | Not Rated |
Performance | High Strength, Machinable, Weldable |
Shape | Bar |
Straightness Tolerance | 3/16"/10 ft. |
Tolerance Rating | Standard |
Warning Message | Physical and mechanical properties are not guaranteed. They are intended only as a basis for comparison and not for design purposes. |
Country of Origin | United States, Canada |
DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant |
RoHS Compliance | Not Compliant |
Schedule B Number | 722850.5000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
Additional Specifications |
Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as molds and structural supports. It resists fracturing from repeated stress. You can also surface harden it with heat to add wear resistance.
If you don't see the size you're looking for, check out our Made-to-Order 4140 Alloy Steel Bars.
Note: Bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
The information in this 3-D model is provided for reference only.