The ASTM A27/A27M standard specifies the chemical composition and mechanical properties of carbon steel castings for general applications. This steel grade is commonly used in various industries such as construction, agriculture, and machinery manufacturing.
Chemical Composition:
– Carbon (C): 0.25% maximum
– Manganese (Mn): 0.70-1.00%
– Phosphorus (P): 0.040% maximum
– Sulfur (S): 0.045% maximum
– Silicon (Si): 0.15-0.35%
Mechanical Properties:
– Tensile Strength: 48,000-70,000 psi (330-485 MPa)
– Yield Strength: 30,000-45,000 psi (205-310 MPa)
– Elongation: 22% minimum
– Hardness: Brinell hardness range of 137-217
Applications:
– ASTM A27/A27M steel grade is commonly used for manufacturing parts and components that require good strength and durability, such as valve bodies, pump casings, housings, and flanges.
– It is also suitable for construction applications where high-strength castings are required, such as bridge components and structural supports.
– This steel grade is often used in the agriculture industry for manufacturing equipment such as plows, cultivators, and seeders.
– Machinery manufacturers utilize ASTM A27/A27M steel grade for producing components such as gears, pulleys, and machine frames.
In summary, ASTM A27/A27M steel grade offers good strength, excellent durability, and suitable machinability for a wide range of general industrial applications. Its chemical composition and mechanical properties make it a reliable choice for various industries that require castings with high-strength and excellent performance.