Exceptional Premium Carbon Alloy Steel Flat Bar, AISI 1020 Quality

• 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: Delve into the intricate attributes and technical specifications of C1020 Carbon Steel, revealing its yield strength, equivalents, unparalleled robustness, and unwavering reliability. This material stands as a testament to engineering excellence.

ASTM SAE AISI 1020 Steel: Representing the pinnacle of quality and reliability, this steel grade is synonymous with precision and superior performance, setting a high standard in the industry.

AISI 1020 steel, also renowned as C1020, demonstrates remarkable versatility in its cold-worked state, whether rolled or drawn. Celebrated for its superb machinability and exceptional weldability, this mild carbon steel is available in turned, polished, or cold-drawn forms. Its low carbon content minimizes susceptibility to induction or flame hardening, guaranteeing consistent performance in diverse applications.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications, offering a profound insight into its diverse capabilities and exceptional adaptability.

Discover the comprehensive properties of SAE AISI 1020 steel with a detailed data sheet that elucidates its chemical composition, as well as its physical and mechanical attributes, providing a holistic understanding of this versatile material.

Chemical Composition: Reveal the elemental constitution of AISI 1020 steel, emphasizing its fundamental characteristics and the basis of its performance.

	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: Investigate the core physical attributes that shape AISI 1020 steel's performance and functional efficiency.

Melting Point: With a melting point precisely at 1515 °C (2760 °F), AISI 1020 steel ensures robust resilience under high temperatures.
Density of AISI 1020 Steel: Exhibiting a density of 7.87 g/cm3 (0.0361 lbs/in3), this material presents a strong and reliable 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: Celebrated for its strength and adaptability, this section explores the formidable mechanical capabilities and versatility of this esteemed steel grade.

The mechanical properties of AISI SAE 1020 steel, encompassing yield and tensile strength, elongation, section reduction, and hardness, illustrate its adaptability and wide-ranging applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received condition, this steel showcases a Young's modulus of 186 GPa (27×106 psi), underscoring its robust performance under load and stress.

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: Delivers exceptional efficiency in precision engineering and sophisticated manufacturing endeavors.

AISI SAE 1020 Carbon Steel: Boasting a machinability rating of 65, based on the 100% benchmark for 1212 steel, it is a trusted choice for diverse manufacturing processes.

SAE AISI 1020 Steel Heat Treatment: Elevate the mechanical properties through sophisticated treatment processes, including normalization, annealing, and austenitizing, to achieve superior performance and durability.

The heat treatment of SAE AISI 1020 mild steel, encompassing processes like normalizing, annealing, and austenitizing, is meticulously designed to ensure peak performance and enduring durability.

Normalizing AISI 1020: Precision-driven normalizing techniques achieve uniform grain size and enhanced mechanical attributes.

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

Annealing AISI 1020: A carefully calibrated process to relieve stress and enhance ductility and toughness for improved material performance.

For small carbon steel forgings (≤ 3 in.), a specified full annealing process with precise temperature and cooling cycles ensures improved material properties and consistency.
Annealing Process: Performed meticulously at high temperatures of 855-900 °C (1575-1650 °F), this process involves a precisely regulated cooling cycle from 855 °C (1575 °F) to 700 °C (1290 °F) at a gradual pace of 28 °C/h (50 °F/h). The result is a finely achieved Brinell hardness rating of 111-149 HB.

Reheating (Austenitizing): Elevate the hardening process with precision by mastering the austenitizing temperature control, ensuring optimal outcomes.

Reheating (Austenitizing) for hardening AISI 1020 steel is meticulously conducted at 760-790 °C (1400-1450 °F). This process is expertly complemented by carburizing at 900 to 925 °C (1650 to 1700 °F), delivering unparalleled case hardening results that enhance durability and strength.

Case Hardening: Revolutionize surface durability and wear resistance with our advanced and expert case hardening techniques, ensuring longevity and performance.

The impressive surface hardening process for 1020 carbon steel is accomplished through precise carburization within a critical temperature band of 970-955°C. This is skillfully executed using an innovative mix of methane and carrier gases. Post-carburization, the steel undergoes direct quenching in water or brine, guaranteeing outstanding hardening achievements.

Experience the advanced typical heat treatment for SAE 1020 case hardening, a revolutionary process that elevates the material's durability and strength to new heights.

• The carbon temperature is controlled with precision between 900-925°C (1650-1700°F), followed by an exacting cooling regime using water or caustic solutions, optimizing the hardening process for exceptional results.
• The reheat temperature is carefully calibrated at 790°C (1450°F), with cooling performed in water or a 3% sodium hydroxide solution, significantly boosting the material's robustness and reliability.
• During carbonitriding, refined temperatures between 790-900°C (1450-1650°F) are utilized. Oil serves as the cooling medium, ensuring a superior and high-quality finish every time.
• Tempering is performed at precise temperatures ranging from 120-205°C (250-400°F), crucial for stress relief and significantly enhancing crack resistance, though it may not always be necessary.

Typical Forging Temperature

For AISI 1020 mild steel, the typical forging temperature reaches an impressive 1290°C (2350°F), ensuring maximum malleability and formability for diverse applications.

AISI 1020 Carbon Steel Welding

For achieving successful welding of AISI SAE C1020 steel, adhere strictly to these recommended preheat and interpass temperature guidelines to ensure optimal strength and integrity.
For thicknesses ≤50mm (2 in.), maintain a preheat and interpass temperature above -12°C for low hydrogen applications, and 38°C for other welding types, ensuring proper fusion and reliability.
For thicknesses between 50mm and 100mm, the ideal preheat and interpass temperature is set at 93°C for low hydrogen applications, and 150°C for other welding processes, optimizing performance.
Postweld heat treatment is optional, with a recommended temperature range of 590-675°C (1100-1250°F) to enhance and refine material properties for superior results.

Application

ASTM AISI SAE 1020 steel stands out with its versatility, producing a range of semi-finished products including square, flat, and round steel bars, and steel plates. This steel plays a crucial role in manufacturing an extensive variety of components for trucks, automotive, and agricultural equipment such as axles, mechanical parts, cold head bolts, motor shafts, and beyond. Additionally, it is widely utilized in crafting structural forms like steel channels, angles, I-beams, and H-beams, underscoring its integral presence.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel is harmonized with European EN standards (including Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, ensuring it is globally applicable and adheres to uniformity.

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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