Smooth AISI 1020 Carbon Alloy Steel Flat Bar, 6-400mm Availability

• 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 extensive attributes of C1020 Carbon Steel, highlighting its robust yield strength and equivalent materials, which underline its enduring strength and dependable performance.

ASTM SAE AISI 1020 Steel: A paragon of excellence, this steel grade exemplifies unrivaled precision and superior performance, setting the standard for quality and consistency.

AISI 1020 steel, widely known as C1020 steel, offers remarkable versatility in its cold-worked form, whether rolled or drawn. Renowned for its superb machinability and weldability, this mild carbon steel is generally available in turned, polished, or cold-drawn states. Its low carbon content reduces susceptibility to induction or flame hardening, ensuring reliable performance across a multitude of applications.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications offer a deep dive into the multifaceted capabilities of this steel, providing complete insight for various applications.

Uncover the SAE AISI 1020 steel properties with a comprehensive data sheet that details its chemical composition along with its physical and mechanical properties, offering a full understanding of this adaptable material.

Chemical Composition: Discover the elemental composition of AISI 1020 steel, emphasizing its core characteristics and fundamental 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 inherent physical attributes that define AISI 1020 steel's exceptional performance and broad usability.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), guaranteeing resilience at high temperatures.
Density of AISI 1020 Steel: With a density of 7.87 g/cm3 (0.0361 lbs/in3), this material demonstrates 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: A testament to its impressive strength and versatility, this section explores the mechanical capabilities 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 adaptability and diverse applications.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received state, this steel features a Young's modulus of 186 GPa (27×106 psi), ensuring robust and reliable performance under 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: Delivering exceptional performance in precision engineering and manufacturing, AISI 1020 is a staple for intricate processes.

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

SAE AISI 1020 Steel Heat Treatment: Elevate mechanical properties through advanced treatments like normalization, annealing, and austenitizing, enhancing performance.

The heat treatment processes for SAE AISI 1020 mild steel, including normalization, annealing, and austenitizing, ensure optimal performance and 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 an exact 915 °C (1675 °F), ensuring optimal structural refinement and resilience.

Annealing AISI 1020: A meticulously designed process to relieve stress and improve ductility and toughness, tailored for maximum efficiency.

For small carbon steel forgings (≤ 3 in.), the recommended full annealing involves specific temperature and cooling cycles, ensuring enhanced material properties and performance.
Annealing Process: This intricate procedure is executed at temperatures ranging from 855-900 °C (1575-1650 °F). It includes a meticulous cooling cycle from 855 °C (1575 °F) down to 700 °C (1290 °F) at a precise rate of 28 °C/h (50 °F/h), resulting in an impressive Brinell hardness of 111-149 HB. This tailored approach guarantees exceptional material quality and consistency.

Reheating (Austenitizing): Achieve optimal hardening and metallurgical harmony through a precise control of the austenitizing temperature, a critical step in refining the steel's structure and performance.

Reheating (Austenitizing) for hardening AISI 1020 steel occurs meticulously at 760-790 °C (1400-1450 °F). This is further enhanced by a sophisticated carburizing process at 900 to 925 °C (1650 to 1700 °F), ensuring top-tier case hardening results and superior surface characteristics.

Case Hardening: Elevate surface durability and resistance to wear with expertly executed case hardening techniques, boosting the longevity and reliability of the steel under demanding conditions.

Our surface hardening procedure for 1020 carbon steel is executed through precise carburization at 970-955°C. This process is uniquely performed within an innovative mixture of methane and carrier gases. Post-carburization, an immediate quenching in water or brine solidifies the exceptional hardening outcomes, ensuring durability and resilience.

We proudly present the standard heat treatment for SAE 1020 case hardening, a meticulously designed process that significantly bolsters both durability and strength, making it ideal for demanding applications.

• The carbon temperature is stringently controlled between 900-925°C (1650-1700°F), utilizing a precise cooling method with water or caustic solutions to perfect the hardening process, enhancing the steel's structural integrity.
• The reheat temperature is expertly set at 790°C (1450°F), with subsequent cooling in water or a 3% sodium hydroxide solution, effectively augmenting the material's robustness and endurance.
• During the sophisticated carbonitriding process, temperatures span from 790-900°C (1450-1650°F), employing oil as the cooling medium, which ensures a high-quality finish and superior material characteristics.
• Tempering is carried out at precise temperatures between 120-205°C (250-400°F), playing a vital role in stress relief and significantly enhancing crack resistance, even though not always required, it adds immense value to material resilience.

Typical Forging Temperature

AISI 1020 mild steel is forged at an impressive temperature of 1290°C (2350°F), ensuring its optimum malleability and formability, perfect for a variety of industrial applications.

AISI 1020 Carbon Steel Welding

To ensure successful welding of AISI SAE C1020 steel, it is essential to follow these recommended preheat and interpass temperature guidelines, ensuring weld integrity and performance.
For steel thicknesses of ≤50mm (2 in.), maintain a preheat and interpass temperature above -12°C for low hydrogen applications, and 38°C for other welding types, ensuring a stable and reliable weld.
For thicknesses ranging from 50mm to 100mm, the ideal preheat and interpass temperature is set at 93°C for low hydrogen applications, and 150°C for other welding processes, optimizing the weld quality.
While postweld heat treatment is optional, it is recommended within a temperature range of 590-675°C (1100-1250°F) to enhance the material's structural properties and performance.

Application

The versatility of ASTM AISI SAE 1020 steel is illustrated in its ability to form a broad range of semi-finished products, such as square, flat, and round steel bars and steel plates. This material is pivotal in producing diverse components for trucks, automotive, and agricultural equipment. Essential parts like axles, mechanical devices, cold head bolts, motor shafts, and more, are crafted from this steel. Additionally, it is frequently molded into structural forms like steel channels, angles, I-beams, and H-beams, making it integral to infrastructure projects.

AISI SAE ASTM 1020 Steel Equivalent Material

SAE ASTM AISI 1020 carbon steel is synonymous with quality, adhering to European EN standards (including DIN EN in Germany, BSI in the UK, NF in France), as well as Japanese JIS and Chinese GB standards. This ensures its global applicability and uniformity, making it a trusted choice worldwide.

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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