High-Quality AISI 1020 Carbon Alloy Steel Flat Bar, 6-400mm

• 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: Explore the comprehensive attributes of C1020 Carbon Steel. Delve deep into its yield strength and equivalents, which stand as testaments to its robustness and unwavering reliability, making it an essential choice for demanding applications.

ASTM SAE AISI 1020 Steel: Set the standard in quality and unwavering consistency. This steel grade exemplifies precision engineering and superior performance, offering unmatched reliability for all your industrial needs.

AISI 1020 steel, also known as C1020 steel, is renowned for its exceptional versatility in cold worked forms, be it rolled or drawn. Praised for its remarkable machinability and weldability, this mild carbon steel is available in turned, polished, or cold drawn states. Its low carbon content minimizes susceptibility to induction or flame hardening, assuring dependable performance across diverse applications.

AISI SAE 1020 Steel: Discover a comprehensive overview of its properties and specifications, offering insights into its multifaceted capabilities. Perfect for understanding its diverse applications and performance levels.

Uncover the properties of SAE AISI 1020 steel with a detailed data sheet. Gain a complete understanding of its chemical composition, physical, and mechanical properties, highlighting the versatility of this remarkable material.

Chemical Composition: Discover the elemental composition of AISI 1020 steel, shedding light on the fundamental characteristics that define this exceptional material.

	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 underpin AISI 1020 steel's outstanding performance and usability in various applications.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), ensuring impressive resilience at high temperatures.
Density of AISI 1020 Steel: With a robust structural profile, this material has a density of 7.87 g/cm3 (0.0361 lbs/in3), contributing to its reliable performance.

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: Explore the strength and adaptability of this esteemed steel grade, with insights into its formidable mechanical capabilities.

The mechanical properties of AISI SAE 1020 steel, including yield and tensile strength, elongation, section reduction, and hardness, underscore its versatility and adaptability for diverse applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received state, this steel exhibits an impressive Young's modulus of 186 GPa (27×106 psi), ensuring steadfast performance under stress and pressure.

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 exceptional precision engineering and manufacturing performance with this superior steel.

AISI SAE 1020 Carbon Steel: With a machinability rating of 65, benchmarked against 1212 steel at 100%, it stands as an optimal choice for efficient manufacturing processes.

SAE AISI 1020 Steel Heat Treatment: Enhance mechanical properties through cutting-edge treatment processes such as normalization, annealing, and austenitizing, ensuring superior performance.

The heat treatment of SAE AISI 1020 mild steel includes processes like normalizing, annealing, and austenitizing, optimizing its performance and durability for various applications.

Normalizing AISI 1020: Achieve uniform grain size and improved mechanical properties through precise normalizing techniques, refining the structure for optimal performance.

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

Annealing AISI 1020: An essential process for relieving stress and enhancing ductility and toughness, tailored for superior material performance.

For small carbon steel forgings (≤ 3 in.), recommended full annealing involves specific temperature and cooling cycles, ensuring enhanced material properties and performance.
Annealing Process: This meticulous procedure is carried out at temperatures ranging from 855-900 °C (1575-1650 °F). It involves a carefully managed cooling cycle from 855 °C (1575 °F) down to 700 °C (1290 °F) at a rate of 28 °C/h (50 °F/h). The result is a Brinell hardness of 111-149 HB, providing the material with enhanced softness and machinability.

Reheating (Austenitizing): Elevate the hardening process by achieving optimal results through highly precise control of the austenitizing temperature, ensuring the material reaches its full potential in strength and resilience.

Reheating (Austenitizing) for hardening AISI 1020 steel is meticulously performed at temperatures between 760-790 °C (1400-1450 °F). This process is enhanced by carburizing at 900 to 925 °C (1650 to 1700 °F), guaranteeing superior case hardening results that significantly improve surface durability.

Case Hardening: Unlock superior surface durability and wear resistance with our expertly refined case hardening techniques, engineered to provide exceptional performance in demanding conditions.

The robust surface hardening of 1020 carbon steel is achieved through precise carburization within a temperature range of 970-955°C. This advanced process utilizes a specialized blend of methane and carrier gases. Following carburization, the steel undergoes direct quenching in water or brine, ensuring exceptional hardness and durability.

Introducing the standard heat treatment for SAE 1020 case hardening, a comprehensive process that enhances both durability and tensile strength, ensuring the material meets rigorous performance standards.

• The carbon temperature is precisely controlled between 900-925°C (1650-1700°F). A specific cooling process using water or caustic solutions maximizes the hardening effect, creating a superior material with enhanced properties.
• The reheat temperature is expertly set at 790°C (1450°F), and the subsequent cooling is performed in water or a 3% sodium hydroxide solution. This meticulous process further enhances the material's robustness and longevity.
• During carbonitriding, temperatures are meticulously maintained between 790-900°C (1450-1650°F). The process employs oil as the cooling medium, ensuring an outstanding finish that meets high-quality standards.
• Tempering occurs at temperatures ranging from 120-205°C (250-400°F). This crucial process relieves stress and significantly boosts crack resistance, though it is not always mandatory.

Typical Forging Temperature

For AISI 1020 mild steel, the forging temperature is a formidable 1290°C (2350°F), which guarantees optimal malleability and ease of shaping during the forging process.

AISI 1020 Carbon Steel Welding

To ensure successful welding of AISI SAE C1020 steel, adhere strictly to the recommended preheat and interpass temperatures, optimizing the weld quality and structural integrity.
For thicknesses ≤50mm (2 in.), maintain a preheat and interpass temperature above -12°C for low hydrogen applications, and 38°C for other types of welding. This ensures a robust and high-quality weld.
For thicknesses between 50mm and 100mm, the recommended preheat and interpass temperature is 93°C for low hydrogen applications, and 150°C for other welding processes, assuring optimal results.
Postweld heat treatment is optional, but a recommended temperature range of 590-675°C (1100-1250°F) can enhance the material properties and ensure optimal performance.

Application

ASTM AISI SAE 1020 steel is highly versatile, forming a wide variety of semi-finished products such as square, flat, and round steel bars, as well as steel plates. It plays a key role in manufacturing a diverse range of components for trucks, automotive, and agricultural equipment, including axles, mechanical parts, cold head bolts, motor shafts, and more. Additionally, this steel is often crafted into structural forms like channels, angles, I-beams, and H-beams, underlining its multifaceted applicability.

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. This ensures its global applicability and uniformity, making it a versatile choice for any project.

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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