Discover the exceptional properties of SAE AISI 1020 Steel, including its impressive yield strength and equivalent standards. Experience the reliability of C1020 carbon steel.
Introducing ASTM SAE AISI 1020 Steel, a versatile and robust solution for diverse industrial applications.
AISI 1020 steel, also recognized as C1020 steel in its cold worked state (either cold rolled or cold drawn), stands out as one of the most widely utilized plain carbon steels. Its excellent machinability and weldability make it a preferred choice. Available in hot rolled or cold drawn forms, it's typically presented in turned, polished, or cold drawn conditions. Its low carbon content ensures resistance to induction and flame hardening.
Comprehensive Guide: AISI SAE 1020 Steel Properties & Specifications. Uncover the detailed attributes that make this steel an industrial favorite.
Detailed Datasheet: Explore the extensive properties of SAE AISI 1020 steel, including its chemical composition, physical characteristics, and mechanical properties.
Chemical Composition
Physical Properties
Melting Point: 1515 °C (2760 °F)
Density of SAE AISI 1020 Steel: 7.87 g/cm³ (0.0361 lbs/in³)
Notes: 10
-6
/K = 10
-6
.K
-1
= (µm/m)/°C
Mechanical Properties of SAE AISI 1020 Mild Steel
Examine the mechanical prowess of AISI SAE 1020 steel, including yield strength, tensile strength, elongation, section reduction, and hardness across various conditions.
The modulus of elasticity (Young's modulus) for SAE AISI 1020 carbon steel in the as-received condition is 186 GPa (27×10
6
psi).
Machinability
SAE AISI 1020 carbon steel boasts a machinability rating of 65, as compared to the 100% benchmark of 1212 steel.
Heat Treatment of SAE AISI 1020 Steel
SAE AISI 1020 mild steel can undergo various heat treatments including normalizing, annealing, and austenitizing.
Normalizing of AISI 1020
The standard normalizing temperature for SAE AISI 1020 mild steel is 915 °C (1675 °F).
Annealing of AISI 1020
For full annealing of small carbon steel forgings (size ≤ 3 in.), follow this recommended temperature and cooling cycle:
Annealing Temperature: 855-900 °C (1575-1650 °F), Cooling from 855 °C (1575 °F) to 700 °C (1290 °F) with a furnace cooling speed of 28 °C/h (50 °F/h). Brinell hardness: 111-149 HB.
Reheating (Austenitizing)
Reheating (austenitizing) temperatures for hardening SAE 1020 steel range from 760-790 °C (1400-1450 °F). Carburizing typically occurs at 900-925 °C (1650-1700 °F).
Case Hardening
The surface hardening carburization process for 1020 carbon steel involves precise temperature control between 970-955 °C. This is typically executed in an environment of mixed methane and carrier gases. Post-carburizing, the hardening process generally involves direct quenching from the carburized state into either water or brine, ensuring optimal hardness.
Typical Heat Treatment for SAE 1020 Case Hardening
- Carbon Temperature: Maintain between 900-925 °C (1650-1700 °F). Cooling Method: Water or caustic solution.
- Reheat Temperature: Reheat at 790 °C (1450 °F). Cooling Method: Water or a 3% sodium hydroxide solution.
- Carbonitriding Temperature: Operate at 790-900 °C (1450-1650 °F). Cooling Method: Oil.
- Temper Temperature: Maintain between 120-205 °C (250-400 °F) for stress relief and enhanced resistance to cracking (this step is optional).
Typical Forging Temperature
The ideal forging temperature for AISI 1020 mild steel is approximately 1290 °C (2350 °F).
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 environments, and 38 °C otherwise.
For thickness 50< t ≤100, the recommended preheat and interpass temperature is 93 °C for low hydrogen and 150 °C for other conditions.
Postweld Heat Treatment is optional, typically performed at temperatures between 590-675 °C (1100-1250 °F).
Application
ASTM AISI SAE 1020 steel is versatile in its semi-finished forms, including square, flat, and round steel bars, as well as steel plates. These are commonly used in manufacturing automotive and agricultural equipment parts like 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, it is frequently utilized in the production of steel channels, steel angles, I-beams, and H-beams.
AISI SAE ASTM 1020 Steel Equivalent Material
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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