Precision AISI 1020 Carbon Alloy Steel Flat Bar, 6-400mm Specifications

• 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

SAE AISI 1020 Steel Properties: Delve into the intricate details of C1020 Carbon Steel's attributes, showcasing its yield strength and equivalents. This remarkable material stands as a beacon of robustness and reliability, trusted by experts worldwide.

ASTM SAE AISI 1020 Steel: Recognized globally for its unmatched quality and consistency, this steel grade is a symbol of precision engineering and superior performance, setting the standard in the industry.

AISI 1020 steel, also known as C1020 steel, is celebrated for its exceptional versatility, especially in its cold worked form, whether rolled or drawn. Renowned for excellent machinability and weldability, this mild carbon steel is available in turned, polished, or cold drawn states. Its low carbon content ensures it is less prone to induction or flame hardening, guaranteeing reliable performance across an array of applications.

AISI SAE 1020 Steel: Discover comprehensive properties and specifications that provide a detailed insight into the multifaceted capabilities of this outstanding steel.

Discover the properties of SAE AISI 1020 steel through an expertly crafted data sheet. Uncover its chemical composition along with key physical and mechanical properties, offering a complete understanding of this versatile material.

Chemical Composition: Explore the elemental composition of AISI 1020 steel, shining a light on its foundational characteristics that define its exceptional quality.

	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: Dive into the intrinsic physical attributes that define the remarkable performance and usability of AISI 1020 steel.

Melting Point: With a precise melting point of 1515 °C (2760 °F), AISI 1020 steel exemplifies resilience and reliability under high-temperature conditions.
Density of AISI 1020 Steel: Possessing a density of 7.87 g/cm3 (0.0361 lbs/in3), this material showcases a robust structural profile, ideal for diverse applications.

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: Highlighting strength and adaptability, this section explores the mechanical prowess of this renowned steel grade.

The mechanical properties of AISI SAE 1020 steel encompass yield and tensile strength, elongation, section reduction, and hardness, showcasing its versatility and suitability for diverse applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received state, this steel exhibits a Young's modulus of 186 GPa (27×106 psi), a testament to its robust performance under stress and precise engineering.

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: Delivering exceptional performance, this steel is a cornerstone in precision engineering and manufacturing.

AISI SAE 1020 Carbon Steel: With a machinability rating of 65, based on a 100% benchmark for 1212 steel, it is a reliable choice for intricate manufacturing processes.

SAE AISI 1020 Steel Heat Treatment: Unlock enhanced mechanical properties through advanced processes such as normalization, annealing, and austenitizing, designed for optimal performance.

The heat treatment of SAE AISI 1020 mild steel includes processes like normalizing, annealing, and austenitizing, ensuring optimal performance and unparalleled durability.

Normalizing AISI 1020: Achieve superior grain size uniformity and enhanced mechanical properties through precise normalizing techniques, tailored for excellence.

The typical normalizing temperature for SAE AISI 1020 mild steel is a precise 915 °C (1675 °F), ensuring optimal structural refinement and performance.

Annealing AISI 1020: A meticulously designed process for stress relief, enhancing ductility and toughness for superior material performance.

For small carbon steel forgings (≤ 3 in.), full annealing is recommended with specific temperature and cooling cycles, ensuring enhanced material properties and performance.
Annealing Process: Immerse your AISI 1020 steel in an optimal annealing process, meticulously executed at 855-900 °C (1575-1650 °F). This ensures a finely tuned cooling cycle from 855 °C (1575 °F) to 700 °C (1290 °F) at a precise rate of 28 °C/h (50 °F/h). The result is an impressive Brinell hardness range of 111-149 HB, maximizing the quality and performance of your steel.

Reheating (Austenitizing): Elevate your hardening process with precision-driven austenitizing temperature regulation, optimizing the strength and resilience of your AISI 1020 steel.

Reheating (Austenitizing) for hardening AISI 1020 steel is expertly managed at temperatures between 760-790 °C (1400-1450 °F). This process is further enhanced by carburizing at 900 to 925 °C (1650 to 1700 °F), ensuring that the surface achieves outstanding case hardening characteristics.

Case Hardening: Amplify the surface durability and wear resistance of AISI 1020 steel with our advanced case hardening techniques, engineered to meet the highest industry standards for longevity and performance.

The robust surface hardening process of the 1020 carbon steel is achieved through a sophisticated carburization cycle, precisely controlled at temperatures ranging from 970-955°C. This process utilizes a cutting-edge combination of methane and carrier gases. Post-carburization, the steel is swiftly quenched in either water or brine, ensuring unparalleled hardening excellence.

Introducing the signature heat treatment for SAE 1020 case hardening, a meticulously designed process that significantly enhances both durability and strength, setting new benchmarks in material performance.

• The carbon temperature is expertly maintained between 900-925°C (1650-1700°F), employing a precise cooling strategy using water or caustic solutions. This process is critical to optimizing the hardening and enhancing the material's structural integrity.
• The reheat temperature is expertly calibrated to 790°C (1450°F), with cooling processes conducted in water or a specialized 3% sodium hydroxide solution. This method significantly augments the material's robustness and resilience.
• During the carbonitriding phase, temperatures are meticulously maintained between 790-900°C (1450-1650°F). The use of oil as the cooling medium ensures a superior finish, adhering to the highest quality standards.
• Tempering occurs at temperatures ranging from 120-205°C (250-400°F), playing a vital role in stress relief to significantly enhance crack resistance. This step, while not always necessary, provides a critical upgrade to your material's reliability.

Typical Forging Temperature

For AISI 1020 mild steel, the typical forging temperature is an impressive 1290°C (2350°F), ensuring that the material reaches optimal malleability and formability, perfect for bespoke manufacturing solutions.

AISI 1020 Carbon Steel Welding

To achieve flawless welding results with AISI SAE C1020 steel, adhere diligently to the recommended preheat and interpass temperatures, which are pivotal for maintaining the structural integrity of the weld.
For thicknesses ≤50mm (2 in.), ensure a preheat and interpass temperature of above -12°C for low hydrogen applications, and 38°C for other welding types, providing a foundation for superior weld quality.
For thicknesses ranging from 50mm to 100mm, maintain an ideal preheat and interpass temperature of 93°C for low hydrogen applications, and 150°C for other welding processes, ensuring optimal results.
Postweld heat treatment is an optional, yet highly beneficial, process, offering a recommended temperature range of 590-675°C (1100-1250°F). This helps to enhance the material properties post-welding, allowing for a robust final product.

Application

ASTM AISI SAE 1020 steel stands as a highly versatile material, expertly crafted into numerous semi-finished products such as square, flat, and round steel bars, along with steel plates. It plays a crucial role in manufacturing a diverse range of essential components for trucks, automotive, and agricultural equipment, including axles, mechanical parts, cold head bolts, motor shafts, and more. Beyond this, it is a popular choice for creating structural forms like steel channels, angles, I-beams, and H-beams, proving to be indispensable across various industries.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel seamlessly aligns with major international standards, including European EN (Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards. This alignment ensures its global applicability and uniformity, making it a preferred choice for international projects.

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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