Industrial AISI 1020 Carbon Alloy Steel Flat Bar, 6-400mm Range

• 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 attributes of C1020 Carbon Steel. Delve into its yield strength and equivalents, all of which underscore the material's impressive robustness and unwavering reliability.

ASTM SAE AISI 1020 Steel: Exemplifying the pinnacle of quality and consistency, this esteemed steel grade is synonymous with precision and outstanding performance.

AISI 1020 steel, also widely known as C1020 steel, shines in its cold worked iterations, be it rolled or drawn. Lauded for its remarkable machinability and weldability, this mild carbon steel is commonly available in turned, polished, or cold drawn forms. Owing to its low carbon content, it is less prone to induction or flame hardening, guaranteeing dependable performance across a multitude of applications.

AISI SAE 1020 Steel: A comprehensive overview of its properties and specifications offers profound insight into the multifaceted capabilities of this versatile material.

Uncover the wealth of SAE AISI 1020 steel properties through an exhaustive data sheet. This document details the chemical composition along with the material's physical and mechanical properties, fostering a complete understanding of its versatility.

Chemical Composition: Reveal the elemental constitution of AISI 1020 steel, highlighting the fundamental characteristics that define this 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 shape AISI 1020 steel's performance and usability.

Melting Point: AISI 1020 steel melts precisely at 1515 °C (2760 °F), ensuring resilience at high temperatures.
Density of AISI 1020 Steel: Featuring a density of 7.87 g/cm3 (0.0361 lbs/in3), this material boasts a substantial structural integrity and 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: This segment is a testament to the strength and adaptability of this renowned steel grade, showcasing its mechanical mastery.

The mechanical characteristics of AISI SAE 1020 steel, featuring yield and tensile strengths, elongation, section reduction, and hardness, accentuate its versatility and broad application potential.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its as-received form, this steel presents a Young's modulus of 186 GPa (27×106 psi), ensuring robust performance when subjected to 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: Delivers exceptional performance in precision engineering and sophisticated manufacturing processes.

AISI SAE 1020 Carbon Steel: With a commendable machinability rating of 65, based on a 100% standard for 1212 steel, it emerges as a reliable choice for diverse manufacturing endeavors.

SAE AISI 1020 Steel Heat Treatment: Elevate the mechanical properties through cutting-edge treatment methods, including normalization, annealing, and austenitizing, to optimize performance and longevity.

The heat treatment spectrum for SAE AISI 1020 mild steel features processes such as normalizing, annealing, and austenitizing to ensure peak performance and durability.

Normalizing AISI 1020: Attain a uniform grain size and enhanced mechanical properties through meticulous normalizing techniques.

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

Annealing AISI 1020: This process is expertly tailored to relieve stress while enhancing ductility and toughness.

For small carbon steel forgings (≤ 3 in.), full annealing entails specific temperature and cooling cycles, ensuring enhanced material properties and performance.
Annealing Process: Immerse the steel in an expertly controlled annealing phase at 855-900 °C (1575-1650 °F), followed by a precise cooling transition from 855 °C (1575 °F) down to 700 °C (1290 °F) at a meticulously measured 28 °C/h (50 °F/h). This method ensures a refined Brinell hardness rating between 111-149 HB, perfecting the steel’s structural integrity.

Reheating (Austenitizing): Elevate the hardening excellence by masterfully managing the austenitizing temperature, optimizing the transformational process.

Reheating (Austenitizing) for hardening AISI 1020 steel is a precision-driven process conducted at 760-790 °C (1400-1450 °F), seamlessly integrated with a superior carburizing stage at 900 to 925 °C (1650 to 1700 °F) to deliver unparalleled case hardening results.

Case Hardening: Expertly fortify surface durability and wear resistance by applying highly-skilled case hardening techniques, ensuring long-lasting performance.

Our state-of-the-art surface hardening process for 1020 carbon steel is executed through precision carburization within the critical temperature range of 970-955°C. This process employs a sophisticated combination of methane and carrier gases, followed by a direct quenching into water or brine to achieve superior hardening outcomes.

Introducing the quintessential heat treatment for SAE 1020 case hardening, a meticulously crafted process that significantly enhances both durability and structural strength.

• The carbon temperature is expertly regulated between 900-925°C (1650-1700°F), utilizing a precise cooling strategy involving water or caustic solutions to maximize the hardening efficiency.
• Reheat temperature is precisely set at 790°C (1450°F), with subsequent cooling executed in water or a 3% sodium hydroxide solution, augmenting the material's toughness and resilience.
• During the carbonitriding phase, maintain temperatures within the 790-900°C (1450-1650°F) range, using oil as the cooling medium to assure a premium quality finish.
• Tempering is conducted at a finely calibrated range of 120-205°C (250-400°F), a critical step for effective stress relief that greatly enhances crack resistance, though it may not be necessary for all applications.

Typical Forging Temperature

For AISI 1020 mild steel, maintain an ideal forging temperature at a robust 1290°C (2350°F), ensuring optimal malleability for superior formability.

AISI 1020 Carbon Steel Welding

Ensure successful welding of AISI SAE C1020 steel by adhering to these optimal preheat and interpass temperatures.
For thicknesses ≤50mm (2 in.), maintain a minimum preheat and interpass temperature over -12°C for low hydrogen applications, and 38°C for other welding types, to assure quality.
For thicknesses between 50mm and 100mm, the recommended preheat and interpass temperature is 93°C for low hydrogen, and 150°C for other processes, ensuring robust welds.
Postweld heat treatment is optional, yet recommended within a temperature range of 590-675°C (1100-1250°F) to elevate the material's properties.

Application

ASTM AISI SAE 1020 steel is renowned for its versatility, forming a range of semi-finished products such as square, flat, and round steel bars, along with steel plates. It is fundamental in crafting components for trucks, automotive, and agricultural equipment, including axles, mechanical parts, cold head bolts, motor shafts, and more. This steel is also proficiently molded into structural forms like steel channels, angles, I-beams, and H-beams, facilitating a myriad of construction and mechanical applications.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel is congruent with European EN standards (including Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, ensuring its global applicability and standardization.

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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