AISI 1020 Carbon Steel Round Bar with Smooth Finish Properties

• Customization: Available
• Type: Carbon Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: carbon steel
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Polished
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Die Steel Bar
• Transport Package: N/M
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7228400000
• Production Capacity: 5000ton/Month

Product Description

Discover the impressive features of SAE AISI 1020 Steel: from its solid yield strength to its comprehensive equivalents, this carbon steel stands out with its versatile properties, making it an invaluable asset in various applications.

Introducing ASTM SAE AISI 1020 Steel, renowned for its exceptional performance and widespread usage in the industry, setting the benchmark for quality and reliability.

AISI 1020 steel, also known affectionately as C1020 steel, shines in its cold worked condition—whether cold rolled or cold drawn. Praised for its excellent machinability and weldability, this popular plain carbon steel is typically hot rolled or cold drawn, but often presented in a polished or cold drawn state. Its low carbon content ensures resistance to induction or flame hardening, solidifying its place as a durable and robust choice.

Explore the comprehensive properties and specifications of AISI SAE 1020 Steel, a material celebrated for its balanced blend of strength, flexibility, and durability.

Dive into our detailed data sheet below, which meticulously outlines the SAE AISI 1020 steel properties, covering chemical composition and both physical and mechanical properties.

Chemical Composition: A precise breakdown of the elements that contribute to the unmatched quality of AISI 1020 steel.

	AISI SAE 1020 Steel Chemical Composition (%)
AISI	C	Mn	P (≤)	S (≤)
1020	0.18-0.23	0.30-0.60	0.040	0.050

Physical Properties: Discover the intrinsic physical attributes that make AISI 1020 steel a preferred choice in numerous applications.

Melting Point: AISI 1020 steel boasts a melting point of 1515 °C (2760 °F), reflecting its solid thermal stability.
1020 steel stands out with a density of 7.87 g/cm³ (0.0361 lbs/in³), highlighting its sturdy yet manageable weight characteristics.

Material 1020 thermal conductivity
Value (W/m·K)	Temperature, °C (°F)
51.9	0 (32)
51.0	100 (212)
48.9	200 (392)

Specific Heat
Value (J/Kg·K)	Temperature, °C (°F)
486	50-100 (122-212)
519	150-200 (302-392)
599	350-400 (662-752)

Electrical Resistivity of 1020 Carbon Steel
Value (μΩ·m)	Temperature, °C (°F)
0.159	0 (32)
0.219	100 (212)
0.292	200 (392)

Coefficients of linear thermal expansion
Value (10-6/K)	Temperature, °C (°F)	Treatment or condition
11.7	20-100 (68-212)	Annealed
12.1	20-200 (68-392)
12.8	20-300 (68-572)
13.4	20-400 (68-752)
13.9	20-500 (68-932)
14.4	20-600 (68-1112)
14.8	20-700 (68-1292)

Notes: 10-6/K = 10-6.K-1 = (µm/m)/°C

Mechanical Properties of SAE AISI 1020 Mild Steel: A deep dive into the robust mechanical characteristics of this steel grade, ensuring it meets diverse industrial needs.

The data clearly demonstrates the strength of AISI SAE 1020 steel, detailing its yield and tensile strength, elongation, section reduction, and hardness across various conditions.
SAE AISI 1020 carbon steel's Young's modulus (modulus of elasticity) in its as-received state measures a remarkable 186 GPa (27×106 psi), showcasing its resilience and flexibility.

AISI 1020 steel mechanical properties in heat-treated or cold-worked conditions
AISI (UNS)	Tensile strength, MPa (ksi), ≥	Yield strength, MPa (ksi), ≥	Elongation in 50 mm, %, ≥	Reduction in area, %, ≥	Hardness (HB)	Processing, condition or treatment	Sample Size, mm (in.)
1020 (G10200)	380 (55)	205 (30)	25	50	111	Hot rolled	19-31.8 mm (0.75-1.25 in.)
	420 (61)	350 (51)	15	41	121	Cold drawn

Mechanical properties in the hot-rolled, normalized, and annealed condition
AISI	Tensile strength, MPa (ksi), ≥	Yield strength, MPa (ksi), ≥	Elongation in 50 mm, %, ≥	Reduction in area, %, ≥	Hardness (HB)	Processing, condition or treatment	Austenitizing temperature, °C (°F)	Quenching agent	Izod impact strength, J, (ft·lbf)	Sample Size
1020	448 (65)	331 (48)	36	59	143	As-rolled	-	Oil	87 (64)	12.8 mm (0.505 in.) machined from 25.4 mm (1 in.) rounds.
	441 (64)	346.5 (50.3)	35.8	68	131	Normalized	870 (1600)	Oil	118 (87)
	394.7 (57.3)	295 (43)	36.5	66	111	Annealed	870 (1600)	Oil	123 (91)

		Cyclic fatigue properties
UNS	Grade	Cyclic strength coefficient, MPa (ksi)	Fatigue strength coefficient, MPa (ksi)	Fatigue strength exponent	Fatigue ductility coefficient	Fatigue ductility exponent	Hardness (HB)
G10200	SAE 1020 steel	1205 (175)	850 (123)	-0.12	0.44	-0.51	108

Machinability: Experience the effortless machinability of AISI SAE 1020 carbon steel, enhancing productivity and efficiency in your operations.

AISI SAE 1020 carbon steel boasts a machinability rating of 65, calibrated against a 100% benchmark for 1212 steel, underscoring its ease of use.

SAE AISI 1020 Steel Heat Treatment: Unravel the heat treatment processes that optimize the performance of SAE AISI 1020 mild steel, including normalizing, annealing, and austenitizing.

The heat treatment options for SAE AISI 1020 mild steel, encompassing normalizing, annealing, austenitizing, and more, unlock its full potential.

Normalizing of AISI 1020: Discover the typical normalizing protocols for SAE AISI 1020 mild steel, ensuring optimal performance at 915 °C (1675 °F).

The recommended normalizing temperature for SAE AISI 1020 mild steel is 915 °C (1675 °F), enhancing its mechanical properties.

Annealing of AISI 1020: A roadmap to achieving top-notch results through careful annealing temperature and cooling cycles.

Adhere to the recommended temperature and cooling cycle for full annealing of small carbon steel forgings (size ≤ 3 in.) to achieve desired characteristics.
Annealing temperature spans 855-900 °C (1575-1650 °F) with a cooling cycle from 855 °C (1575 °F) to 700 °C (1290 °F). Furnace cooling at 28 °C/h (50 °F/h) results in a Brinell hardness of 111-149 HB.

Reheating (Austenitizing): Learn the art of reheating to unlock hardening potential in SAE 1020 steel, with precise temperature control.

Reheating (austenitizing) for hardening SAE 1020 steel recommends temperatures of 760-790 °C (1400-1450 °F). Carburizing is commonly executed at 900 to 925 °C (1650 to 1700 °F).

Case Hardening: Enhance the surface durability and strength of SAE 1020 steel through effective case hardening techniques.

The surface hardening carburization temperature of 1020 carbon steel lies within a precise range of 970-955 °C. This critical process is primarily conducted in an expert blend of methane and carrier gas. Post-carburization, the hardening process is refined by direct quenching from this high-temperature state, plunging the steel into either water or brine.

Typical Heat Treatment for SAE 1020 Case Hardening

• During the crucial carbon treatment, temperatures are meticulously maintained between 900-925 °C (1650-1700 °F), followed by a rapid cooling method using water or caustic solutions.
• Reheat Temperature: At 790 °C (1450 °F), the steel undergoes a secondary heating phase, which is followed by cooling in water or a 3% sodium hydroxide solution to achieve desired properties.
• Carbonitriding Temperature: This process is performed between 790-900 °C (1450-1650 °F) and requires a cooling method using oil, enhancing durability and longevity.
• Temper Temperature: For stress relief and enhanced resistance to cracking, tempering is performed at a range of 120-205 °C (250-400 °F), though this step is not mandatory.

Typical Forging Temperature

Typical forging temperature for AISI 1020 mild steel is set at a precise 1290 °C (2350 °F), ensuring optimal malleability and formability during the forging process.

AISI 1020 Carbon Steel Welding

Recommended Preheat and Interpass Temperatures for AISI SAE C1020 Steel:
For steel thicknesses up to 50mm (2 in.), a recommended preheat and interpass temperature of above -12 °C is advised for low hydrogen processes, and 38 °C for other methods.
For steel thicknesses between 50 and 100 mm, the recommended preheat and interpass temperatures rise to 93 °C for low hydrogen processes, and up to 150 °C for others.
Postweld Heat Treatment: This optional procedure is conducted between 590-675 °C (1100-1250 °F) to refine the weld's integrity and quality.

Application

ASTM AISI SAE 1020 steel offers a versatile array of semi-finished products, such as square and flat steel bars, round steel bars, and steel plates. These can be expertly crafted into components for trucks, automotive, and agricultural equipment, including axles, mechanical parts, cold head bolts, motor and pump shafts, ratchets, light gears, gear drives, worm gears, spindles, seat brackets, and crane-cable drums. Additionally, it is often fashioned into steel channels, angles, I-beams, and H-beams.

AISI SAE ASTM 1020 Steel Equivalent Material

SAE ASTM AISI 1020 carbon steel is internationally equivalent to European EN (Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, showcasing its global applicability and standardized excellence.

AISI SAE ASTM 1020 steel equivalent material
US				Germany		China		Japan		ISO
Standard	AISI (UNS)	Standard	Grade	Standard	Grade (Material Number)	Standard	Grade	Standard	Grade	Standard	Grade
AISI SAE; ASTM A29/A29M	1020 (G10200)	AMS	5032D; 5045E; 5046	DIN EN 10083-2; DIN EN 10250-2	C22E (1.1151); C22 (1.0402)	GB/T 699	20 steel	JIS G4051	S20C

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