Delve into the Impressive Properties of SAE AISI 1020 Steel: Yield Strength, Detailed Specifications, and Equivalents
ASTM SAE AISI 1020 Steel: Comprehensive Guide
AISI 1020 steel, also referred to as C1020, is available in cold-worked (cold rolled or cold drawn) conditions. This widely utilized plain carbon steel boasts excellent machinability and weldability. Typically, SAE AISI 1020 mild steel is found in turned, polished, or cold drawn states. Its low carbon content ensures resistance to induction and flame hardening, making it a versatile choice for various applications.
AISI SAE 1020 Steel: In-Depth Properties & Specification Analysis
Refer to the data sheet below for a detailed breakdown of SAE AISI 1020 steel's properties, including chemical composition, physical characteristics, and mechanical attributes.
Chemical Composition of SAE AISI 1020 Steel
Physical Properties of AISI 1020 Steel
Melting Point: 1515 °C (2760 °F)
Density of 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
Explore the Mechanical Properties of AISI SAE 1020 Steel, Including Yield Strength, Tensile Strength, Elongation, Section Reduction, and Hardness Across Various Conditions.
SAE AISI 1020 Carbon Steel Young's Modulus (Modulus of Elasticity) in As-Received Condition: 186 GPa (27×10
6
psi)
Machinability of SAE AISI 1020 Steel
AISI SAE 1020 Carbon Steel boasts a machinability rating of 65, based on a standard machinability rating of 100% for 1212 steel.
Heat Treatment Processes for SAE AISI 1020 Steel
Heat treatment techniques for SAE AISI 1020 mild steel encompass normalizing, annealing, austenitizing, and more.
Normalizing Process of AISI 1020 Steel
The standard normalizing temperature for SAE AISI 1020 mild steel is 915 °C (1675 °F).
Annealing Procedure for AISI 1020 Steel
Recommended temperature and cooling cycle for full annealing of small carbon steel forgings (size ≤ 3 in.):
The annealing temperature ranges between 855-900 °C (1575-1650 °F). Cooling cycle: from 855 °C (1575 °F) to 700 °C (1290 °F), with a furnace cooling rate of 28 °C/h (50 °F/h). Brinell hardness: 111-149 HB.
Reheating (Austenitizing) Process
Reheating (austenitizing) temperatures for hardening SAE 1020 steel range from 760-790 °C (1400-1450 °F). Carburizing is typically performed at 900-925 °C (1650-1700 °F).
Case Hardening Techniques for SAE AISI 1020 Steel
The surface hardening carburization process for 1020 carbon steel operates at a temperature range of 970-955 °C. This is typically executed within a mixed gas environment comprising methane and a carrier gas. Post-carburizing, the material is usually hardened by direct quenching from the carburizing temperature into either water or brine, ensuring superior durability and strength.
Typical Heat Treatment for SAE 1020 Case Hardening
- Carbon Temperature: 900-925 °C (1650-1700 °F) Cooling Method: Water or Caustic Solution
- Reheat Temperature: 790 °C (1450 °F) Cooling Method: Water or 3% Sodium Hydroxide Solution
- Carbonitriding Temperature: 790-900 °C (1450-1650 °F) Cooling Method: Oil
- Temper Temperature: 120-205 °C (250-400 °F) This step is intended for stress relief and enhancing resistance to cracking, though it is not mandatory.
Typical Forging Temperature
The typical forging temperature for AISI 1020 mild steel is 1290 °C (2350 °F), ensuring optimal malleability and workability.
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) and 38 °C for non-low hydrogen environments.
For thickness (t) 50< t ≤100mm: Preheat and Interpass Temperature: 93 °C (for low hydrogen) and 150 °C for non-low hydrogen environments.
Postweld Heat Treatment (Optional): Temperature Range: 590-675 °C (1100-1250 °F)
Application
ASTM AISI SAE 1020 steel is incredibly versatile, with various semi-finished products such as square steel bars, flat steel bars, round steel bars, and steel plates. These can be utilized in manufacturing parts for trucks, automotive, and agricultural equipment, including axles, mechanical components, cold head bolts, motor shafts, pump shafts, ratchets, light gears, gear drives, worm gears, spindles, seat brackets, crane-cable drums, motor-brake wheels, and more. Additionally, it is often shaped into steel channels, steel angles, I-beams, and H-beams.
AISI SAE ASTM 1020 Steel Equivalent Material
SAE ASTM AISI 1020 carbon steel has several international equivalents, including European EN (Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards.
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