Reliable Premium Carbon Alloy Steel Flat Bar, AISI 1020 Specifications

• 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: Delve deeply into the extensive attributes of C1020 Carbon Steel, a material that epitomizes strength and steadfastness. Examine its yield strength and comparable standards, underscoring its exceptional robustness and unwavering reliability.

ASTM SAE AISI 1020 Steel: This remarkable steel grade sets a standard of quality and uniformity, encapsulating precision engineering and extraordinary performance. Experience a benchmark material that consistently delivers.

AISI 1020 steel, known also as C1020, stands out for its remarkable versatility, particularly in its cold-worked variants, whether rolled or drawn. Celebrated for superior machinability and weldability, this mild carbon steel is typically offered in turned, polished, or cold drawn forms. Its low carbon content minimizes induction or flame hardening susceptibility, ensuring reliable usage across an array of applications.

AISI SAE 1020 Steel: Explore its Comprehensive Properties & Specifications, providing an all-encompassing overview of its diverse capabilities and multifactorial benefits.

Unlock the secrets of SAE AISI 1020 steel with a detailed data sheet that reveals its chemical composition, along with its exhaustive physical and mechanical properties. Gain a profound understanding of this versatile steel material.

Chemical Composition: Reveal the fundamental essence of AISI 1020 steel by examining its elemental makeup, which highlights the intrinsic characteristics of this dependable steel.

	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: Dive into the core physical attributes that determine AISI 1020 steel’s remarkable performance and extensive usability across different applications.

Melting Point: AISI 1020 steel exhibits a precise melting point of 1515 °C (2760 °F), ensuring steadfast resilience even under high-temperature conditions.
Density of AISI 1020 Steel: With a density of 7.87 g/cm3 (0.0361 lbs/in3), this steel boasts a robust structural profile, integral to its strength and reliability.

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 testament to its formidable strength and versatility, this section delves into the mechanical prowess of this celebrated steel grade.

The mechanical properties of AISI SAE 1020 steel, encompassing yield and tensile strength, elongation, sectional reduction, and hardness, underscore its versatility and broad applicability across diverse fields.
SAE AISI 1020 Carbon Steel: Young's Modulus: In its natural as-received state, this steel demonstrates a Young's modulus of 186 GPa (27×106 psi), presenting robust 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: Exceptional, delivering superior performance in precision engineering and manufacturing applications.

AISI SAE 1020 Carbon Steel: With an impressive machinability rating of 65, using a 100% benchmark for 1212 steel, it stands as a reliable go-to choice for efficient manufacturing processes.

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

The heat treatment procedures for SAE AISI 1020 mild steel, encompassing normalizing, annealing, and austenitizing, are designed to ensure optimal performance and extend material durability.

Normalizing AISI 1020: Achieve refined grain size and enhanced mechanical properties through meticulously executed normalizing techniques.

The typical normalizing temperature for SAE AISI 1020 mild steel is precisely 915 °C (1675 °F), ensuring optimal structural refinement and performance enhancement.

Annealing AISI 1020: A specialized process aimed at relieving stress while improving the ductility and toughness of the steel.

For small carbon steel forgings (≤ 3 in.), the recommended full annealing includes specific temperature and cooling cycles, ensuring significantly improved material properties and performance.
Annealing Process: Meticulously conducted at a precise temperature range of 855-900 °C (1575-1650 °F), with an expertly controlled cooling cycle from 855 °C (1575 °F) to 700 °C (1290 °F) at a rate of 28 °C/h (50 °F/h). This careful process achieves an impressive Brinell hardness of 111-149 HB, ensuring superior material uniformity and reliability.

Reheating (Austenitizing): Elevate the hardening process to new heights through precise austenitizing temperature control, optimizing the steel's strength and resilience.

Reheating (Austenitizing) for hardening AISI 1020 steel is expertly conducted at 760-790 °C (1400-1450 °F), complemented by advanced carburizing at 900 to 925 °C (1650 to 1700 °F), ensuring unrivaled case hardening results and enhanced surface durability.

Case Hardening: Transform surface durability and wear resistance through our expert case hardening techniques, delivering unmatched performance and longevity.

Our robust surface hardening process for 1020 carbon steel is perfected through meticulous carburization at a precise temperature range of 970-955°C. This innovative technique blends methane with carrier gases, followed by a direct quench into water or brine, ensuring exceptional hardening results that speak of quality and precision.

Introducing the typical heat treatment for SAE 1020 case hardening: a specialized process that significantly enhances durability and strength, ensuring reliable performance across applications.

• We meticulously maintain the carbon temperature between 900-925°C (1650-1700°F) with a precise cooling method using water or caustic solutions, optimizing the hardening process for superior results.
• The reheat temperature is expertly set at 790°C (1450°F). Cooling is conducted in water or a 3% sodium hydroxide solution, further enhancing the material's robustness and ensuring outstanding performance and durability.
• In our carbonitriding process, temperatures range from 790-900°C (1450-1650°F), employing oil as the cooling medium. This ensures a high-quality finish, delivering exceptional resistance and surface characteristics.
• Tempering is conducted at temperatures between 120-205°C (250-400°F), essential for stress relief and significantly improving crack resistance, although not always obligatory, it provides enhanced structural integrity.

Typical Forging Temperature

For AISI 1020 mild steel, the typical forging temperature is an impressive 1290°C (2350°F), ensuring optimal malleability and formability, allowing for superior shaping and structural adaptation.

AISI 1020 Carbon Steel Welding

For achieving successful welding of AISI SAE C1020 steel, adhere to these recommended preheat and interpass temperatures to ensure high-quality welds and superior joint integrity.
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, ensuring optimal weld quality and performance.
For thicknesses between 50mm and 100mm, the ideal preheat and interpass temperature is 93°C for low hydrogen applications and 150°C for other welding processes, resulting in durable and robust welded joints.
Postweld heat treatment is optional but recommended, with a temperature range of 590-675°C (1100-1250°F) to enhance material properties, ensuring the steel's durability and performance in demanding applications.

Application

ASTM AISI SAE 1020 steel showcases exceptional versatility, forming a diverse range of semi-finished products, including square, flat, and round steel bars, as well as steel plates. Its integral role in manufacturing components for trucks, automotive, and agricultural equipment such as axles, mechanical parts, cold head bolts, and motor shafts is unmatched. Additionally, this steel is expertly crafted into structural forms like steel channels, angles, I-beams, and H-beams, supporting a spectrum of construction needs.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel aligns perfectly with European EN standards, including Germany DIN EN, British BSI, French NF, as well as Japanese JIS and Chinese GB standards, ensuring global applicability and uniformity, making it a preferred 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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