High-Strength Steel Sheet, AISI 1020 Carbon Properties and Quality

• Customization: Available
• Type: Carbon Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: carbon steel
• Composition: Stainless Steel Scrap
• 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 - Explore the robust characteristics of C1020 Carbon Steel, including its impressive Yield Strength and equivalency.

Discover the ASTM SAE AISI 1020 Steel - A benchmark in quality and durability.

AISI 1020 steel, widely recognized as C1020 in its cold worked state, whether cold rolled or drawn, stands out as one of the most versatile plain carbon steels. It boasts excellent machinability and weldability, making it a preferred choice. Available in both hot rolled and cold drawn forms, it is predominantly delivered in turned and polished or cold drawn conditions. With its low carbon nature, it shows limited response to induction or flame hardening.

AISI SAE 1020 Steel: Comprehensive Properties & Specifications Guide

Below, find a detailed data sheet of SAE AISI 1020 steel covering its chemical composition, along with its physical and mechanical property spectra.

Chemical Composition - The foundation of AISI 1020's remarkable attributes.

	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 - Unveil the intrinsic characteristics of AISI 1020 steel.

Melting Point: 1515 °C (2760 °F) - Testament to its high-temperature resilience.
Density of 1020 Steel: 7.87 g/cm3 (0.0361 lbs/in3) - A balance of mass and strength.

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)

Important Notes: Essential considerations for working with AISI 1020.-6/K = 10-6.K-1 = (µm/m)/°C

Mechanical Properties of SAE AISI 1020 Mild Steel - A testament to strength and versatility.

The ensuing data highlights the mechanical prowess of AISI SAE 1020 steel, showcasing features such as yield strength, tensile strength, elongation, section reduction, and hardness across various conditions.
SAE AISI 1020 Carbon Steel - Unmatched Young's Modulus in as-received condition: 186 GPa (27×106 psi).

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 ease of processing AISI 1020 Steel.

AISI SAE 1020 Carbon Steel boasts a commendable machinability rating of 65, benchmarked against the 100% rating standard of 1212 steel.

SAE AISI 1020 Steel Heat Treatment - Enhance and refine your steel's performance.

Heat treatment processes for SAE AISI 1020 mild steel include normalizing, annealing, austenitizing, among others.

Normalizing AISI 1020 - A process to refine grain structure and enhance consistency.

The standard normalizing temperature for SAE AISI 1020 mild steel is 915 °C (1675 °F), ideal for achieving uniformity.

Annealing AISI 1020 - Perfecting softness and machinability.

Full annealing of small carbon steel forgings (≤ 3 in.) involves specific temperature and cooling cycles:
Annealing Temperature: 855-900 °C (1575-1650 °F), Cooling Cycle: From 855 °C (1575 °F) to 700 °C (1290 °F), Furnace Cooling Speed: 28 °C/h (50 °F/h), Brinell Hardness: 111-149 HB.

Reheating (Austenitizing) - A step toward hardening precision.

Reheating (Austenitizing) temperatures for hardening SAE 1020 steel are set at 760-790 °C (1400-1450 °F). Carburizing is typically executed at 900 to 925 °C (1650 to 1700 °F).

Case Hardening - Surface enhancement for AISI 1020.

Carburization for surface hardening of 1020 carbon steel occurs at 970-955 °C, usually within a methane and carrier gas mix. Post-carburization hardening is achieved via direct quenching into water or brine from the carburizing temperature.

Typical heat treatment for SAE 1020 case hardening

• The carbon temperature should be maintained between 900-925 °C (1650-1700 °F) for optimal results. This range is crucial for effective case hardening, and can be followed by cooling using water or caustic to ensure the material integrity and desired mechanical properties.
• Reheat the steel to a precise 790 °C (1450 °F), which is essential for achieving the perfect mechanical balance. Use water or a 3% sodium hydroxide solution for cooling to ensure the best quality and performance of the steel.
• For carbonitriding, a temperature window of 790-900 °C (1450-1650 °F) is recommended. Cooling in oil is preferred to enhance the surface hardness and wear resistance of the steel, optimizing its utility in various applications.
• A tempering temperature range of 120-205 °C (250-400 °F) is advised for stress relief and to improve crack resistance. While not mandatory, this process significantly enhances the longevity and durability of the steel.

Typical Forging Temperature

The optimal forging temperature for AISI 1020 mild steel is a robust 1290 °C (2350 °F). This high temperature ensures the steel’s malleability and structural integrity during the forging process, leading to superior end products.

AISI 1020 Carbon Steel Welding

For welding AISI SAE C1020 steel, specific preheat and interpass temperatures are recommended to prevent cracking and ensure joint integrity.
For steel thicknesses up to 50mm (2 in.), it is recommended to maintain a preheat and interpass temperature above -12 °C for low hydrogen applications, and 38 °C for other applications, to achieve optimal weld quality.
For steel with thickness between 50 and 100mm, a preheat and interpass temperature of 93 °C is recommended for low hydrogen applications, and 150 °C for other applications, ensuring robust and reliable welds.
Postweld heat treatment is optional but can be beneficial. A temperature range of 590-675 °C (1100-1250 °F) is suggested to enhance the mechanical properties and relieve residual stresses in the weld.

Application

ASTM AISI SAE 1020 steel is versatile, producing an array of semi-finished products such as square, flat, and round steel bars, as well as steel plates. These can be expertly crafted into parts for trucks, automotive, and agricultural equipment, like axles, mechanical components, cold head bolts, motor shafts, pump shafts, ratchets, and light gears. Additional uses include gear drives, worm gears, spindles, seat brackets, crane-cable drums, and motor-brake wheels. It is also commonly shaped into structural components like steel channels, angles, I-beams, and H-beams.

AISI SAE ASTM 1020 Steel Equivalent Material

The SAE ASTM AISI 1020 carbon steel is equivalent to several international standards, including European EN (Germany DIN EN, British BSI, French NF), Japanese JIS, and Chinese GB standards, ensuring its global applicability and compliance.

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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