Heavy-Duty AISI 1020 Carbon Alloy Steel Flat Bar, Smooth Design

• Customization: Available
• Type: Carbon Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: carbon steel
• 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: Embark on a journey through the intricate attributes of C1020 Carbon Steel. Discover its remarkable yield strength and equivalents, underscoring its exceptional robustness and unwavering reliability.

ASTM SAE AISI 1020 Steel: Recognized as a hallmark of quality and uniformity, this prestigious steel grade epitomizes precision engineering and superior performance.

AISI 1020 steel, widely esteemed as C1020 steel, offers unparalleled versatility in its expertly cold worked form, whether rolled or drawn. Renowned for its superb machinability and weldability, this mild carbon steel is available in turned, polished, or cold drawn states. Its low carbon composition reduces susceptibility to induction or flame hardening, ensuring steadfast performance across a myriad of applications.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications, offering a complete exploration of its multifaceted capabilities and exceptional performance.

Uncover the SAE AISI 1020 steel properties with a detailed data sheet that reveals its chemical composition alongside its robust physical and mechanical properties, providing a holistic understanding of this versatile material.

Chemical Composition: Reveal the elemental constitution of AISI 1020 steel, underscoring its foundational characteristics and intrinsic qualities.

	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: Delve into the core physical attributes that define AISI 1020 steel's outstanding performance and extensive usability.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), ensuring its resilience in high-temperature environments.
Density of AISI 1020 Steel: With a robust density of 7.87 g/cm3 (0.0361 lbs/in3), this material is marked by its sturdy structural profile.

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: An exemplary testament to its strength and adaptability, this section explores the mechanical prowess of this esteemed steel grade.

The mechanical properties of AISI SAE 1020 steel, encompassing yield and tensile strength, elongation, section reduction, and hardness, underscore its remarkable versatility and breadth of applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received condition, this steel exhibits an impressive Young's modulus of 186 GPa (27×106 psi), ensuring its robust performance under various stress conditions.

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: Demonstrates exceptional performance in precision engineering and advanced manufacturing.

AISI SAE 1020 Carbon Steel: With a machinability rating of 65, against a 100% benchmark for 1212 steel, it serves as a dependable choice for manufacturing endeavors.

SAE AISI 1020 Steel Heat Treatment: Elevate the mechanical properties through sophisticated treatment processes such as normalization, annealing, and austenitizing.

The heat treatment of SAE AISI 1020 mild steel includes processes like normalizing, annealing, and austenitizing, ensuring peak performance and long-lasting durability.

Normalizing AISI 1020: Attain uniform grain size and enhanced mechanical properties through meticulous normalizing techniques.

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

Annealing AISI 1020: A process crafted to relieve stress while significantly improving ductility and toughness.

For small carbon steel forgings (≤ 3 in.), recommended full annealing encompasses specific temperature and cooling cycles, ensuring superior material properties.
Annealing Process: Experience superior material treatment with our meticulously controlled annealing process, conducted at an optimal range of 855-900 °C (1575-1650 °F). The cooling cycle is precisely regulated, transitioning from 855 °C (1575 °F) to 700 °C (1290 °F) at a harmonious 28 °C/h (50 °F/h), achieving a remarkable Brinell hardness of 111-149 HB, ensuring high-quality results.

Reheating (Austenitizing): Elevate the hardening process with our exceptional austenitizing temperature control, ensuring precision and optimal results for superior material strength and reliability.

Reheating (Austenitizing) for hardening AISI 1020 steel is expertly conducted at an exact range of 760-790 °C (1400-1450 °F), alongside a specialized carburizing process at 900 to 925 °C (1650 to 1700 °F). This meticulous approach guarantees exceptional case hardening results, enhancing durability and robustness.

Case Hardening: Transform surface durability and wear resistance with our advanced case hardening techniques, engineered to provide unmatched protection and longevity for your components.

Our robust surface hardening process for 1020 carbon steel is masterfully achieved through precise carburization within a temperature range of 970-955°C. Utilizing an innovative blend of methane and carrier gases, this process ensures exceptional hardening results. Post-carburization, the steel is directly quenched into water or brine, maximizing hardness and structural integrity.

Discover the typical heat treatment process for SAE 1020 case hardening, known for significantly enhancing durability, strength, and overall performance of your steel components.

• The carbon temperature is scrupulously maintained between 900-925°C (1650-1700°F), followed by a precise cooling method using water or caustic solutions, meticulously optimizing the hardening process for superior material performance.
• With a reheat temperature set precisely at 790°C (1450°F), our cooling process is conducted in water or a 3% sodium hydroxide solution, significantly enhancing the material's robustness and ensuring top-tier performance.
• During the carbonitriding process, temperatures are expertly controlled between 790-900°C (1450-1650°F), using oil as the cooling medium. This meticulous approach ensures a high-quality finish, enhancing the material's performance and longevity.
• Tempering takes place at carefully controlled temperatures between 120-205°C (250-400°F). This critical step is essential for stress relief and dramatically improves crack resistance, although not always obligatory for every application.

Typical Forging Temperature

For AISI 1020 mild steel, experience the benefits of a typical forging temperature at a substantial 1290°C (2350°F), ensuring unmatched malleability and formability for diverse applications.

AISI 1020 Carbon Steel Welding

Ensure flawless welding of AISI SAE C1020 steel by adhering to our recommended preheat and interpass temperatures, designed to deliver optimal results and structural integrity.
For steel thicknesses ≤50mm (2 in.), maintain a preheat and interpass temperature above -12°C for low hydrogen applications, and 38°C for conventional welding, ensuring superior weld quality.
For thicknesses between 50mm and 100mm, the ideal preheat and interpass temperature is expertly set at 93°C for low hydrogen, and 150°C for other welding processes, ensuring optimal weld integrity and strength.
Postweld heat treatment is optional but recommended for enhanced material properties, with a temperature range ideally set at 590-675°C (1100-1250°F), ensuring maximum performance and durability.

Application

ASTM AISI SAE 1020 steel showcases its versatility, forming numerous semi-finished products such as square, flat, and round steel bars, as well as steel plates. It is crucial in manufacturing a wide array of components for trucks, automotive, and agricultural equipment, including axles, mechanical parts, cold head bolts, motor shafts, and more. Additionally, this steel is commonly crafted into structural forms like steel channels, angles, I-beams, and H-beams, supporting a wide range of construction and engineering needs.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel seamlessly aligns with European EN standards (including Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards. This alignment ensures global applicability and uniformity, supporting international collaborations and 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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