Versatile AISI 1020 Carbon Alloy Steel Flat Bar, Smooth Surface

• 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: Immerse yourself in the comprehensive details of C1020 Carbon Steel. Explore its exceptional yield strength and equivalent grades, a testament to its unmatched robustness and unwavering reliability.

ASTM SAE AISI 1020 Steel: Setting a standard for unparalleled quality and reliability, this premier steel grade epitomizes precision engineering and superior performance.

AISI 1020 steel, known in the industry as C1020, is a paradigm of versatility in its cold worked rendition, whether expertly rolled or intricately drawn. Renowned for its exemplary machinability and weldability, this mild carbon steel is predominantly available in turned, polished, or cold drawn finishes. Its low carbon content reduces susceptibility to induction or flame hardening, ensuring consistent performance across a multitude of applications.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications, providing an expansive insight into its diverse capabilities and multifaceted applications.

Discover the SAE AISI 1020 steel properties with a meticulously detailed data sheet. Delve into its chemical composition, along with its physical and mechanical properties, offering a holistic understanding of this multifaceted material.

Chemical Composition: Uncover the elemental composition of AISI 1020 steel, shedding light on its fundamental characteristics and foundational attributes.

	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 and enhance AISI 1020 steel's performance and usability across various applications.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), ensuring remarkable resilience even at high temperatures.
Density of AISI 1020 Steel: With a density of 7.87 g/cm3 (0.0361 lbs/in3), this material presents a formidable structural profile, reinforcing its robust nature.

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 tribute to its strength and flexibility, this segment explores the mechanical resilience of this renowned steel grade.

The mechanical properties of AISI SAE 1020 steel, encompassing yield and tensile strength, elongation, section reduction, and hardness, underscore its versatility and diverse applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received state, this steel demonstrates a Young's modulus of 186 GPa (27×106 psi), ensuring impressive 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 outstanding performance in precision engineering and high-quality manufacturing.

AISI SAE 1020 Carbon Steel: With a machinability rating of 65, based on a 100% benchmark for 1212 steel, it serves as a preferred and reliable choice for diverse manufacturing processes.

SAE AISI 1020 Steel Heat Treatment: Enhance the mechanical attributes through advanced heat treatment processes like normalization, annealing, and austenitizing.

The heat treatment of SAE AISI 1020 mild steel involves key processes such as normalizing, annealing, and austenitizing, ensuring optimal performance and extended durability.

Normalizing AISI 1020: Achieve a uniform grain size and superior mechanical properties through expertly executed normalizing techniques.

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

Annealing AISI 1020: A specialized process designed to relieve stress while improving ductility and toughness.

For small carbon steel forgings (≤ 3 in.), recommended full annealing involves specific temperature and controlled cooling cycles, enhancing material properties significantly.
Annealing Process: Undergoes precise thermal treatment at an impressive range of 855-900 °C (1575-1650 °F). The meticulously controlled cooling cycle transitions smoothly from 855 °C (1575 °F) to 700 °C (1290 °F) at a rate of 28 °C/h (50 °F/h), resulting in a refined Brinell hardness of 111-149 HB, ideal for diverse industrial applications.

Reheating (Austenitizing): Elevate the hardening potential of AISI 1020 steel through expert management of austenitizing temperatures, ensuring exceptional material performance and resilience.

Reheating (Austenitizing) for hardening AISI 1020 steel involves a critical temperature phase between 760-790 °C (1400-1450 °F). This is expertly escalated with a carburizing stage at 900 to 925 °C (1650 to 1700 °F) to achieve unparalleled case hardening quality.

Case Hardening: Revolutionize surface durability and significantly boost wear resistance with state-of-the-art case hardening methodologies, enhancing product longevity under demanding conditions.

The formidable surface hardening of 1020 carbon steel is secured through a sophisticated carburization process at a meticulous temperature span of 970-955°C. This innovative procedure blends methane with carrier gases, followed by an immediate quench in water or brine, ensuring superior hardening outcomes.

Discover the standard heat treatment for SAE 1020 case hardening, a transformative process designed to bolster durability and mechanical strength.

• The carbon temperature, maintained with precision between 900-925°C (1650-1700°F), combines with a specialized cooling technique using water or caustic solutions to refine the hardening process.
• Set at 790°C (1450°F), the reheat temperature involves a strategic cooling sequence in water or a 3% sodium hydroxide solution, further enhancing material integrity and robustness.
• During carbonitriding, temperatures range comfortably from 790-900°C (1450-1650°F), utilizing oil as the cooling medium. This ensures a premium finish with consistent quality and durability.
• Tempering is conducted within an essential range of 120-205°C (250-400°F) to provide stress relief and substantially improve crack resistance, though it remains an optional enhancement.

Typical Forging Temperature

For the malleable AISI 1020 mild steel, an exemplary forging temperature of 1290°C (2350°F) is maintained, ensuring top-tier malleability and moldability for diverse applications.

AISI 1020 Carbon Steel Welding

Ensure welding success with AISI SAE C1020 steel by adhering to recommended preheat and interpass temperatures for optimal results.
For thicknesses ≤50mm (2 in.), maintain a preheat and interpass temperature exceeding -12°C for low hydrogen environments, and 38°C for other welding variants, safeguarding performance.
For thicknesses between 50mm and 100mm, an optimal preheat and interpass temperature of 93°C is recommended for low hydrogen, while 150°C is ideal for other welding methods.
Postweld heat treatment is elective, yet beneficial, with a suggested range of 590-675°C (1100-1250°F) to enhance overall material characteristics.

Application

ASTM AISI SAE 1020 steel showcases versatility, forming various semi-finished products like square, flat, and round bars, as well as steel plates. It's integral in fabricating a myriad of components for trucks, automotive, and agricultural sectors, including axles, parts, bolts, shafts, and more. Additionally, this steel is a staple in creating structural elements such as channels, angles, I-beams, and H-beams.

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 seamless global applicability and consistency across industries.

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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