• Carbon Steel Smooth Round Bar 6-400mm
  • Carbon Steel Smooth Round Bar 6-400mm
  • Carbon Steel Smooth Round Bar 6-400mm
  • Carbon Steel Smooth Round Bar 6-400mm
  • Carbon Steel Smooth Round Bar 6-400mm
  • Carbon Steel Smooth Round Bar 6-400mm

Carbon Steel Smooth Round Bar 6-400mm

Type: Carbon Steel Bar
Standard: AISI, ASTM, DIN, JIS, GB, BS
Composition: Stainless Steel Scrap
Technique: Forged
Shape: Bar
Surface Treatment: Polished
Samples:
US$ 750/Ton 1 Ton(Min.Order)
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Overview

Basic Info.

Model NO.
carbon steel
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

Discover the impressive properties of SAE AISI 1020 Steel, including its C1020 Carbon Steel yield strength and its equivalents.

Premium Quality ASTM SAE AISI 1020 Steel

AISI 1020 steel, also recognized as C1020 steel in its cold worked condition (cold rolled or cold drawn), stands out as one of the most widely used plain carbon steels. Its exceptional machinability and weldability make it a preferred choice. Typically available in turned and polished or cold drawn conditions, its low carbon content makes it resistant to induction or flame hardening.

Comprehensive Guide to AISI SAE 1020 Steel Properties & Specifications

The table below provides a detailed breakdown of SAE AISI 1020 steel properties, including its chemical composition, and physical and mechanical characteristics.

Chemical Composition Breakdown

  AISI SAE 1020 Steel Chemical Composition (%)
AISI C Mn P (≤) S (≤)
1020 0.18-0.23 0.30-0.60 0.040 0.050

Key Physical Properties

Melting Point: 1515 °C (2760 °F)
1020 Steel Density: 7.87 g/cm³ (0.0361 lbs/in³)
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)

Supplemental Notes: 10
-6
/K = 10
-6
.K
-1
= (µm/m)/°C

Mechanical Properties of SAE AISI 1020 Mild Steel

The data below illustrates the mechanical properties of AISI SAE 1020 steel, including yield strength, tensile strength, elongation, section reduction, and hardness under various conditions.
SAE AISI 1020 Carbon Steel Young's Modulus (Modulus of Elasticity) in its as-received condition: 186 GPa (27×10
6
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 Rating

AISI SAE 1020 carbon steel boasts a machinability rating of 65, benchmarked against a 100% rating for 1212 steel.

SAE AISI 1020 Steel Heat Treatment Processes

Explore the heat treatment methods for SAE AISI 1020 mild steel, including normalizing, annealing, and austenitizing.

Normalizing Process for AISI 1020

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

Annealing Process for AISI 1020

Suggested temperature and cooling cycle for complete annealing of small carbon steel forgings (size ≤ 3 in.):
Annealing temperature: 855-900 °C (1575-1650 °F). Cooling cycle: from 855 °C (1575 °F) to 700 °C (1290 °F), with a furnace cooling speed of 28 °C/h (50 °F/h). Resulting Brinell hardness: 111-149 HB.

Reheating (Austenitizing) Process

Reheating (austenitizing) temperatures for hardening SAE 1020 steel range between 760-790 °C (1400-1450 °F). Carburizing is typically conducted at 900-925 °C (1650-1700 °F).

Case Hardening Techniques

For surface hardening of 1020 carbon steel, carburization is performed at 970-955 °C, typically in a methane and carrier gas mixture. Hardening follows carburizing, achieved by direct quenching from the carburizing temperature into water or brine.

Typical heat treatment for SAE 1020 case hardening

  • Carbon temperature: 900-925 °C (1650-1700 °F), cooling method: water or caustic;
  • Reheat temperature: 790 °C (1450 °F), cooling method: water or 3% sodium hydroxide;
  • Carbonitriding temperature: 790-900 °C (1450-1650 °F), cooling method: oil;
  • Temper temperature: 120-205 °C (250-400 °F), for stress relief and improving resistance to cracking (not mandatory).

Typical Forging Temperature

Typical forging temperature for AISI 1020 mild steel is 1290 °C (2350 °F).

AISI 1020 Carbon Steel Welding

The recommended preheat and interpass temperatures for AISI SAE C1020 steel:
For thickness ≤50mm (2 in.), the recommended preheat and interpass temperature is above -12 °C (for low hydrogen); and 38 °C for other than low hydrogen.
For thickness (t) 50< t ≤100, the recommended preheat and interpass temperature is 93 °C (for low hydrogen); and 150 °C (for other than low hydrogen).
Postweld heat treatment is optional, temperature is 590-675 °C (1100-1250 °F).

Application

ASTM AISI SAE 1020 steel has many semi-finished products, such as square steel bars, flat steel bars, round steel bars, steel plates, which can be used to make truck, automotive and agricultural equipment parts such as axles, mechanical parts, cold head bolts, motor shafts, pump shafts, ratchet, light gear, gear drives, worm gear, spindle, seat bracket, crane-cable drum, motor-brake wheel, etc. And usually also made into steel channels, steel angles, I-beams and H-beams.

AISI SAE ASTM 1020 Steel Equivalent Material

SAE ASTM AISI 1020 carbon steel equivalent to European EN (Germany DIN EN, British BSI, French NF…), Japanese JIS and Chinese GB standard.
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    

Detailed Photos

Carbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mmCarbon Steel Smooth Round Bar 6-400mm


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