Discover the remarkable properties of SAE AISI 1020 Steel, a versatile material known for its robust C1020 Carbon Steel Yield Strength and notable equivalent specifications.
Introducing ASTM SAE AISI 1020 Steel: The Benchmark of Quality and Reliability.
AISI 1020 steel, also famed as C1020 steel, stands out in its cold worked form (cold rolled or cold drawn). This widely used plain carbon steel is celebrated for its excellent machinability and weldability. Typically available in turned and polished or cold drawn conditions, SAE AISI 1020 mild steel ensures versatility in both hot rolled and cold drawn forms. Its low carbon content reinforces its resistance to induction or flame hardening, making it a preferred choice for various applications.
Comprehensive Guide to AISI SAE 1020 Steel Properties & Specifications.
The data sheet below meticulously details the properties of SAE AISI 1020 steel, covering aspects such as chemical composition, physical and mechanical attributes, and more.
In-Depth Look at the Chemical Composition of AISI 1020 Steel
Detailed Insight into Physical Properties of AISI 1020 Steel
Impressive Melting Point: 1515 °C (2760 °F)
Density Parameters for 1020 Steel: 7.87 g/cm3 (0.0361 lbs/in3)
Technical Notes:
10
6
= 10
6.K
1
= (µm/m)/°C
Mechanical Properties of SAE AISI 1020 Mild Steel: A Closer Examination
The following data offers a comprehensive overview of the mechanical properties of AISI SAE 1020 steel, including yield strength, tensile strength, elongation, section reduction, and hardness under various conditions.
In its as-received condition, SAE AISI 1020 carbon steel boasts a Young's modulus (modulus of elasticity) of 186 GPa (27×10
6
psi).
Evaluating the Machinability of 1020 Carbon Steel
The machinability rating of AISI SAE 1020 carbon steel stands at 65, benchmarked against the 100% rating for 1212 steel.
Comprehensive Overview of SAE AISI 1020 Steel Heat Treatment Processes
Heat treatment techniques for SAE AISI 1020 mild steel include normalizing, annealing, austenitizing, among others.
Normalizing SAE AISI 1020: Best Practices
Optimal normalizing temperature for SAE AISI 1020 mild steel is set at 915 °C (1675 °F).
Annealing Process for AISI 1020 Steel
For small carbon steel forgings (size ≤ 3 in.), the recommended annealing temperature ranges from 855-900 °C (1575-1650 °F). The cooling cycle proceeds from 855 °C (1575 °F) to 700 °C (1290 °F), with a furnace cooling speed of 28 °C/h (50 °F/h). The resulting Brinell hardness ranges between 111-149 HB.
Technical Specifications for Annealing AISI 1020
Reheating (Austenitizing) Techniques
For effective hardening of SAE 1020 steel, reheating (austenitizing) temperatures are specified between 760-790 °C (1400-1450 °F). Common carburizing temperatures are set at 900 to 925 °C (1650 to 1700 °F).
Case Hardening Procedures for Enhanced Durability
The surface hardening carburization temperature of 1020 carbon steel is meticulously maintained between 970-955 °C. This process is predominantly conducted within a sophisticated mixture of methane and carrier gas. Post-carburization, hardening is effectively achieved via direct quenching from the carburizing temperature into water or brine, ensuring optimal surface durability.
Typical Heat Treatment for SAE 1020 Case Hardening
- Carbon Temperature: Maintain a precise range of 900-925 °C (1650-1700 °F). Cooling Method: Utilize water or caustic solutions for reliable results.
- Reheat Temperature: Set at a critical 790 °C (1450 °F). Cooling Method: Employ water or a 3% sodium hydroxide solution for effective cooling.
- Carbonitriding Temperature: Carefully controlled between 790-900 °C (1450-1650 °F). Cooling Method: Opt for oil cooling to ensure thorough processing.
- Temper Temperature: Maintain between 120-205 °C (250-400 °F). This step is crucial for stress relief and enhancing resistance to cracking, though it is not always mandatory.
Typical Forging Temperature
AISI 1020 mild steel requires a forging temperature of 1290 °C (2350 °F) to achieve optimal formability and mechanical properties.
AISI 1020 Carbon Steel Welding
Recommended Preheat and Interpass Temperatures for AISI SAE C1020 Steel:
For thickness ≤50mm (2 in.), maintain a preheat and interpass temperature above -12 °C for low hydrogen applications, and 38 °C for others.
For thickness (t) 50 < t ≤ 100, set the preheat and interpass temperature at 93 °C for low hydrogen needs and 150 °C for other applications.
Postweld heat treatment is optional, with a recommended temperature range of 590-675 °C (1100-1250 °F) for enhancing weld quality.
Application
ASTM AISI SAE 1020 steel is versatile, producing semi-finished products such as square, flat, and round steel bars, steel plates, and more. These materials are vital for truck, automotive, and agricultural equipment parts, including axles, mechanical parts, cold head bolts, and motor shafts. Additionally, they are used in the creation of pump shafts, ratchets, light gears, gear drives, worm gears, spindles, seat brackets, crane-cable drums, motor-brake wheels, and structural components like steel channels, angles, I-beams, and H-beams.
AISI SAE ASTM 1020 Steel Equivalent Material
SAE ASTM AISI 1020 carbon steel is equivalent to the European EN (Germany DIN EN, British BSI, French NF…), Japanese JIS, and Chinese GB standards, ensuring global compatibility and recognition.
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