4140 Steel Flat Bar is a cold drawn annealed steel flat bar. It provides a combination of hardness, strength, abrasion resistance, and high impact stress-resistant properties. It has excellent toughness and good ductility and wear-resistance. It is considered suitable for heavy-duty industrial applications due to its physical and mechanical properties. It is used in various applications such as
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Specifications:
4140 Steel Flat Bar, ASTM A331, A108-13, AISI 4140
Chemical Composition
Element | Percentage |
Carbon, C | 0.380-0.430% |
Manganese, Mn | 0.75-1.00% |
Silicon, Si | 0.15-0.30% |
Chromium, Cr | 0.80-1.10% |
Molybdenum, Mo | 0.15-0.25% |
Sulfur, S | 0.040% |
Phosphorous, P | 0.035% |
Iron, Fe | Balance |
Mechanical Properties
Tensile Strength, Ultimate | 95000 psi |
Tensile Strength, Yield | 60200 psi |
Elongation at break (in 50 mm) | 25.70% |
Brinell Hardness | 197 |
Melting Point | 2580?F |
Density | 7.85 g/cm? |
Physical Characteristics
Machinability | Good |
Weldability | Good |
Formability | Fair |
*Data provided for the purpose of reference only.