High-Performance AISI 1020 Carbon Alloy Steel Flat Bar, Smooth Texture

• 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: Embark on a deep dive into the intricate attributes of C1020 Carbon Steel, including its robust yield strength and equivalent variants, which together highlight its steadfast reliability and unmatched performance in various applications.

ASTM SAE AISI 1020 Steel: Representing the pinnacle of quality and consistency, this steel grade is synonymous with precision engineering and superior performance standards.

AISI 1020 steel, also heralded as C1020 steel, shines with incredible versatility in its cold worked form, whether rolled or drawn. Esteemed for its outstanding machinability and weldability, this mild carbon steel is typically accessible in turned, polished, or cold drawn conditions. Its minimal carbon content renders it less prone to induction or flame hardening, ensuring reliable performance across an array of applications.

AISI SAE 1020 Steel: A Complete Exploration of its Comprehensive Properties & Specifications, offering an in-depth understanding of its versatile capabilities and applications.

Explore the SAE AISI 1020 steel properties with a comprehensive data sheet detailing its chemical composition, alongside its physical and mechanical properties, providing a holistic understanding of this adaptable material.

Chemical Composition: Discover the elemental composition of AISI 1020 steel, spotlighting its fundamental characteristics and industrial significance.

	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 shape AISI 1020 steel's performance and practical usability.

Melting Point: AISI 1020 steel boasts a precise melting point of 1515 °C (2760 °F), guaranteeing resilience and stability at high temperatures.
Density of AISI 1020 Steel: Exhibiting a density of 7.87 g/cm3 (0.0361 lbs/in3), this material showcases a robust and dependable 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 powerful testament to its strength and adaptability, this section explores the mechanical prowess of this esteemed steel grade.

The mechanical properties of AISI SAE 1020 steel, including 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 demonstrates an impressive Young's modulus of 186 GPa (27×106 psi), ensuring resilient performance under conditions of 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: Provides exceptional performance in precision engineering and high-precision manufacturing.

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

SAE AISI 1020 Steel Heat Treatment: Elevate the mechanical properties through advanced heat treatment processes, including normalization, annealing, and austenitizing for optimal results.

The heat treatment of SAE AISI 1020 mild steel involves expert processes like normalizing, annealing, and austenitizing, ensuring it achieves peak performance and longevity.

Normalizing AISI 1020: Achieve uniform grain size and improved mechanical properties through expert normalizing techniques.

The conventional normalizing temperature for SAE AISI 1020 mild steel is an exact 915 °C (1675 °F), ensuring optimal structural refinement and integrity.

Annealing AISI 1020: A meticulously designed process aimed at relieving stress and enhancing ductility and toughness.

For small carbon steel forgings (≤ 3 in.), recommended full annealing entails specific temperature and cooling cycles to ensure enhanced material properties and performance.
Annealing Process: Our process is meticulously conducted at a high-temperature range of 855-900 °C (1575-1650 °F), followed by a precisely controlled cooling cycle from 855 °C (1575 °F) down to 700 °C (1290 °F) at a steady rate of 28 °C/h (50 °F/h). This ensures a refined Brinell hardness of 111-149 HB, delivering superior quality and performance.

Reheating (Austenitizing): Perfect the hardening of your steel with our advanced austenitizing techniques, where every aspect of the temperature control process is optimized for maximum efficiency and strength.

Reheating (Austenitizing) for hardening AISI 1020 steel is performed at 760-790 °C (1400-1450 °F). This process is expertly complemented by carburizing in a high-temperature range of 900 to 925 °C (1650 to 1700 °F), ensuring unparalleled case hardening outcomes.

Case Hardening: Elevate the surface strength and wear resistance of your steel with our expertly crafted case hardening techniques, designed to infuse durability into every inch.

The robust surface hardening process of 1020 carbon steel is accomplished through precision-controlled carburization at temperatures ranging from 970-955°C. This process is innovatively executed with a unique blend of methane and carrier gases. Post-carburization, the steel undergoes direct quenching in water or brine, ensuring exceptional and consistent hardening results.

Introducing the quintessential heat treatment for SAE 1020 case hardening, a process meticulously designed to enhance the durability and fortitude of your steel components.

• The carbon temperature is precisely controlled between 900-925°C (1650-1700°F). Our optimized cooling method, using either water or caustic solutions, is key to achieving superior hardening.
• The reheat temperature is expertly set at 790°C (1450°F), with a strategic cooling process in water or a 3% sodium hydroxide solution, significantly boosting the material’s robustness and performance.
• During carbonitriding, we maintain temperatures meticulously between 790-900°C (1450-1650°F), using oil as the cooling medium, ensuring an immaculate and high-quality finish.
• Tempering takes place within a temperature range of 120-205°C (250-400°F), a crucial step for stress alleviation and enhancing crack resistance, although it is not always a mandatory requirement.

Typical Forging Temperature

For AISI 1020 mild steel, the typical forging temperature is a substantial 1290°C (2350°F), assuring optimal malleability and prime formability for superior crafting.

AISI 1020 Carbon Steel Welding

For the successful welding of AISI SAE C1020 steel, adhere to our expertly recommended preheat and interpass temperatures to ensure superior weld integrity.
For thicknesses ≤50mm (2 in.), maintain preheat and interpass temperatures above -12°C for low hydrogen applications, and at 38°C for other welding types, ensuring optimal welding conditions.
For thicknesses between 50mm and 100mm, the ideal preheat and interpass temperature is set at 93°C for low hydrogen processes, and 150°C for other welding applications, delivering perfect weld quality.
Postweld heat treatment is an optional step, with a recommended temperature range of 590-675°C (1100-1250°F), designed to enhance and refine material properties.

Application

ASTM AISI SAE 1020 steel is incredibly versatile, forming a vast array of semi-finished products including square, flat, and round steel bars, alongside robust steel plates. It is fundamental in manufacturing diverse components for trucks, automotive, and agricultural equipment, such as axles, mechanical parts, cold head bolts, and motor shafts. Additionally, this steel is frequently crafted into structural forms like steel channels, angles, I-beams, and H-beams, making it indispensable in various industries.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel corresponds seamlessly with European EN standards (including German DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, ensuring its global applicability and consistent quality across borders.

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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