SAE AISI 1020 Steel: Comprehensive Properties, Yield Strength, and Equivalents.
ASTM SAE AISI 1020 Steel: Premium Quality and Reliability.
AISI 1020 steel, also recognized as C1020 steel, is available in cold worked (cold rolled or cold drawn) conditions. Renowned for its excellent machinability and weldability, SAE AISI 1020 mild steel can be hot rolled or cold drawn, often found in turned, polished, or cold drawn states. Its low carbon content makes it resistant to induction and flame hardening.
AISI SAE 1020 Steel: Detailed Properties and Specifications.
Below is the data sheet specifying SAE AISI 1020 steel properties, including its chemical composition, as well as physical and mechanical properties.
Chemical Composition: A Thorough Breakdown.
Physical Properties: In-Depth Analysis.
Melting Point: 1515 °C (2760 °F).
Density of 1020 Steel: 7.87 g/cm³ (0.0361 lbs/in³).
Notes: Comprehensive Insights.
Thermal Expansion: -6 x 10 /K.
Thermal Expansion Coefficient: -6 x 10 /K.
Thermal Expansion Value: -6 x 10 /K.
Thermal Expansion Rate: -6 x 10 /K.
Thermal Expansion: -6 x 10 /K.
Unit Conversion: (µm/m)/°C.
Mechanical Properties of SAE AISI 1020 Mild Steel: Comprehensive Overview.
The following data showcases AISI SAE 1020 steel's mechanical properties, including yield strength, tensile strength, elongation, section reduction, and various hardness conditions.
SAE AISI 1020 carbon steel's Young's Modulus (Modulus of Elasticity) in the as-received condition: 186 GPa (27×10 psi).
Young's Modulus: 27×10 psi.
Modulus of Elasticity: 27×10 psi.
Machinability: Precision and Performance.
AISI SAE 1020 carbon steel has a machinability rating of 65, based on a standard benchmark of 100% for 1212 steel.
SAE AISI 1020 Steel Heat Treatment: Techniques and Methods.
Heat treatment procedures for SAE AISI 1020 mild steel, encompassing normalizing, annealing, and austenitizing techniques.
Normalizing of AISI 1020: Optimal Conditions.
The typical normalizing temperature for SAE AISI 1020 mild steel is 915 °C (1675 °F).
Annealing of AISI 1020: Best Practices.
Recommended temperature and cooling cycle for fully annealing small carbon steel forgings (size ≤ 3 in.):
Annealing temperature ranges from 855-900 °C (1575-1650 °F). Cooling cycle ranges from 855 °C (1575 °F) to 700 °C (1290 °F), with a furnace cooling rate of 28 °C/h (50 °F/h). Brinell hardness is between 111-149 HB.
Reheating (Austenitizing): Detailed Procedures.
Reheating (austenitizing) temperatures for hardening of SAE 1020 steel range from 760-790 °C (1400-1450 °F). Carburizing typically occurs between 900-925 °C (1650-1700 °F).
Case Hardening: Techniques and Temperatures.
The surface hardening carburization temperature for 1020 carbon steel is 970-955 °C. Typically performed in a methane and carrier gas mixture, post-carburizing hardening involves direct quenching from the carburizing temperature into water or brine.
Typical Heat Treatment for SAE 1020 Case Hardening
- Carbon temperature range: 900-925 °C (1650-1700 °F). Cooling method: water or caustic solutions.
- Reheat Temperature: 790 °C (1450 °F). Cooling method: water or a 3% sodium hydroxide solution.
- Carbonitriding Temperature: 790-900 °C (1450-1650 °F). Cooling method: oil.
- Temper Temperature: 120-205 °C (250-400 °F) for stress relief and enhanced resistance to cracking. Note: Tempering is not mandatory.
Typical Forging Temperature
AISI 1020 Mild Steel Forging Temperature: 1290 °C (2350 °F).
AISI 1020 Carbon Steel Welding
Recommended Preheat and Interpass Temperatures for AISI SAE C1020 Steel:
For thickness ≤ 50mm (2 in.): Preheat and interpass temperature above -12 °C for low hydrogen; 38 °C for other than low hydrogen.
For thickness (t) >50mm and ≤100mm: Preheat and interpass temperature is 93 °C for low hydrogen; and 150 °C for other than low hydrogen.
Postweld Heat Treatment (Optional): Temperature range is 590-675 °C (1100-1250 °F).
Applications
ASTM AISI SAE 1020 Steel boasts a variety of semi-finished products, including square, flat, and round steel bars, as well as steel plates. These can be utilized in the manufacturing of truck, automotive, and agricultural equipment parts such as axles, mechanical parts, cold head bolts, motor shafts, pump shafts, ratchets, light gears, gear drives, worm gears, spindles, seat brackets, crane-cable drums, and motor-brake wheels. Additionally, they are often fashioned into steel channels, steel angles, I-beams, and H-beams.
AISI SAE ASTM 1020 Steel Equivalent Materials
SAE ASTM AISI 1020 carbon steel is equivalent to European EN (Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards.
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