Smooth Finish 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
• 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 characteristics of C1020 Carbon Steel. Marvel at the precision of its yield strength and equivalent grades, underscoring its exemplary robustness and unwavering reliability.

ASTM SAE AISI 1020 Steel: A paragon of quality and dependability, this steel grade epitomizes precision and superior performance, setting an industry benchmark.

AISI 1020 steel, widely known as C1020 steel, demonstrates remarkable versatility in its cold-worked manifestations, be it rolled or drawn. Renowned for its exceptional machinability and weldability, this mild carbon steel is generally available in turned, polished, or cold drawn conditions. Its low carbon content renders it less prone to induction or flame hardening, ensuring consistent, trustworthy performance across a myriad of applications.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications, offering an exhaustive overview of its diverse and multifaceted capabilities.

Uncover the SAE AISI 1020 steel properties with a meticulously detailed data sheet. Delve into its chemical composition and explore its physical and mechanical properties, presenting a holistic understanding of this versatile material.

Chemical Composition: Reveal the elemental composition of AISI 1020 steel, accentuating its core characteristics and foundational traits.

	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 intrinsic physical qualities that define AISI 1020 steel's performance, resilience, and practical usability.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), ensuring remarkable resilience at high temperatures.
Density of AISI 1020 Steel: Exhibiting a density of 7.87 g/cm3 (0.0361 lbs/in3), this material manifests a robust structural profile, ideal for various applications.

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 versatility, this section explores the mechanical excellence of this distinguished steel grade.

The mechanical properties of AISI SAE 1020 steel, encompassing yield and tensile strength, elongation, section reduction, and hardness, underscore its versatility and wide-ranging application potential.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received state, this steel manifests a Young's modulus of 186 GPa (27×106 psi), ensuring steadfast performance under stress and strain.

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: Demonstrating exceptional performance in precision engineering and manufacturing domains.

AISI SAE 1020 Carbon Steel: Boasting a machinability rating of 65 based on a 100% benchmark for 1212 steel, it stands as a stalwart choice for efficient manufacturing processes.

SAE AISI 1020 Steel Heat Treatment: Elevate the mechanical properties through sophisticated treatment processes, including normalization, annealing, and austenitizing, enhancing overall performance.

The heat treatment of SAE AISI 1020 mild steel encompasses essential processes like normalizing, annealing, and austenitizing. These processes ensure optimal performance characteristics and durability.

Normalizing AISI 1020: Achieve consistent grain size and improved mechanical properties through meticulously precise normalizing techniques.

The typical normalizing temperature for SAE AISI 1020 mild steel is accurately set at 915 °C (1675 °F), ensuring optimal structural refinement and reliability.

Annealing AISI 1020: A process meticulously designed to relieve stress and enhance both ductility and toughness.

For small carbon steel forgings (≤ 3 in.), recommended full annealing involves specific temperature and cooling cycles, guaranteeing enhanced material properties and performance.
Annealing Process: Experience the precision of our annealing process, executed at 855-900 °C (1575-1650 °F). This meticulous procedure includes a controlled cooling cycle from 855 °C (1575 °F) to 700 °C (1290 °F) at a rate of 28 °C/h (50 °F/h), culminating in an impressive Brinell hardness of 111-149 HB.

Reheating (Austenitizing): Elevate the hardening process to new heights with our expert austenitizing temperature control, optimizing steel performance and integrity.

Reheating (Austenitizing) for hardening AISI 1020 steel is performed at an optimal 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 superior case hardening that sets new standards.

Case Hardening: Maximize surface durability and wear resistance through our advanced case hardening techniques, crafted for excellence.

Achieve robust surface hardening of 1020 carbon steel through precise carburization at 970-955°C. Our process utilizes an innovative methane and carrier gas blend. Post-carburization, the steel is quenched directly into water or brine, guaranteeing extraordinary hardening results.

Introducing the quintessential heat treatment for SAE 1020 case hardening, a meticulously designed process that amplifies both durability and strength.

• Experience meticulous carbon temperature maintenance between 900-925°C (1650-1700°F), with a precisely engineered cooling method using water or caustic solutions to optimize hardening.
• Our reheat temperature is strategically set at 790°C (1450°F), followed by efficient cooling in water or a 3% sodium hydroxide solution, enhancing material robustness.
• During carbonitriding, temperatures range from 790-900°C (1450-1650°F), with oil as the preferred cooling medium, ensuring a finish of superior quality.
• Tempering is conducted at 120-205°C (250-400°F), essential for stress relief and significantly enhancing crack resistance, though not always required.

Typical Forging Temperature

For AISI 1020 mild steel, a typical forging temperature of a remarkable 1290°C (2350°F) ensures optimal malleability and formability.

AISI 1020 Carbon Steel Welding

For successful AISI SAE C1020 steel welding, these recommended preheat and interpass temperatures are crucial.
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.
For thicknesses between 50mm and 100mm, aim for a preheat and interpass temperature of 93°C for low hydrogen, and 150°C for other welding processes.
Postweld heat treatment is optional, with a strategic temperature range of 590-675°C (1100-1250°F) to enhance material properties.

Application

ASTM AISI SAE 1020 steel boasts versatility, creating semi-finished products such as square, flat, and round steel bars, and steel plates. It plays a crucial role in manufacturing a diverse range of components for trucks, automotive, and agriculture, including axles, mechanical parts, cold head bolts, motor shafts, and more. Additionally, this steel is often formed into structural shapes like steel channels, angles, I-beams, and H-beams.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel seamlessly aligns with European EN standards (covering Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, ensuring its global applicability and 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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