AISI 1018 Round Bar

AISI 1018 Round Bar

Concise Overview of AISI 1018 Round Bar

  • Temperature Range: 855 – 900 °C
  • Surface Finish: Smooth Turned, Bright Drawn
  • Application: Machinery parts, Rods, Spindles
  • Heat Treatment: Normalising, Annealing, Stress Relieving

SAE 1018 Material in Annealed Temper Delivery Condition

  • Peeled
  • Grinding
  • Polished
  • Cold Drawn
  • Rough Turned
  • Hot Drawn

Table of contents

AISI 1018 Hot Rolled Bars as per ASTM A576 and A569 CQ American Specification

AISI 1018 Round Bar Specification

SAE 1018 Round Bar Sizes
  • Flat: 100 x 100-600×600
  • Square: 100 x 100-600×600
  • Round: Φ80-Φ1000
1018 Cold Rolled Steel Flat/Blcoks Length
  • 120 – 1500
SAE 1018 Material Temperature Range
  • 855 – 900 °C
AISI 1018 Round Bar Interpass Temperatures Welding
  • For thickness ≤50mm: above -12 °C
  • For thickness 50 ≤ t ≤100: 38 °C
1018 Cold Finished Flat Bar Modulus of Elasticity
  • 186 GPa
Supply Condition of SAE 1018 Rod
  • Normalize
Forging Temperature of 1018 Square Bar
  • 1650ºF
Carbon Content of AISI 1018 Bar
  • 0.15-0.20
1018 Cf Flat Bar Application
  • Machinery parts
  • Rods
  • Spindles
  • Shafts
1018 Hex Bar Heat Treatment
  • Normalising
  • Annealing
  • Stress Relieving
  • Carburising
  • Core Refining
1018 Cold Rolled Flat Bar Form
  • Flat bar
  • Square
  • Round
Surface Finish of SAE 1018 Round Bar
  • Smooth Turned
  • Bright Drawn

1018 Cold Finished Flat Bar as per ASTM A311 and A108 Standard

  • ASTM A108
  • ASTM A576
  • JDM QL-2
1018 Cold Rolled Steel Bars in Square, Hexagon and Flat Shapes up to 11 Inches
Size (inch) 1/8 5/32 3/16 7/32 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1
Length (inch) 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00 144.00
Weight (lbs/ft) 0.042 0.065 0.093 0.127 0.166 0.26 0.375 0.511 0.667 0.845 1.042 1.262 1.502 1.763 2.045 2.347 2.67

Types of SAE 1018 Round Bar

SAE 1018 Round Bars

SAE 1018 Round Bars

SAE 1018 Steel Rod

SAE 1018 Steel Rod

1018 Cold Rolled Steel Bright Bars

1018 Cold Rolled Steel Bright Bars

1018 Cold Finished Hex Bars

1018 Cold Finished Hex Bars

AISI 1018 Flat Bars

AISI 1018 Flat Bars

AISI 1018 Steel Square Bars

AISI 1018 Steel Square Bars

UNS G10180 Forged Bars

UNS G10180 Forged Bars

1018 CRS Steel Rectangle Bar

1018 CRS Steel Rectangle Bar

SAE 1018 Rod

SAE 1018 Rod

AISI 1018 Steel Hex Bar and UNS G10180 Bright Bars with Carburizing Treatment
Properties Values
Temperature (°C) 925
Weight (kg) 0.5-2.0
Case depth (mm) 0.38
Time (h) 0.5-1.0
Quench Brine
Hardness (HRC) 50-60

SAE 1018 Chemical Composition

Grade AISI 1018
C 0.15-0.20
Si 0.10-0.35
Mn 0.60-0.90
P ≤0.04
S ≤0.05

1018 Cold Drawn Steel Mechanical Properties

Surface Finish Bright Drawn Smooth Turned
Tensile Strength Mpa 430 – 750 410 – 560
Yield Strength Mpa 370 – 600 230 – 330
Elongation, % ≥ 12 ≥22
Hardness,HB 120 – 220 120 – 170

Tolerances of 1018 Hot Rolled Round Bars

Rounds

(Inch)

 Squares Hex

(Inch)

 Flats

(Inch)
  • 6 to 8 – 0.006
  • 4 to 6 – 0.005
  • 2-1/2 to 4 – 0.004
  •   Up to 1-.25 – 0.002
  • 1-1/2 to under 2-1/2 – 0.003
  • 4 to 5 – 0.010 – 0.012
  • 3/4 to 1-1/2 – 0.003 -0.003
  •   2-1/2 to 4 – 0.005 -0.005
  • 1-1/2 to 2-1/2 – 0.004 -0.004
  • Up to .75 – 0.002 -0.002
  • 6 -0.013
  • 3/4 to 1-1/2 – 0.004
  • 1-1/2 to 3 – 0.005
  • 3 to 4 – 0.006
  • Up to 3/4 – 0.003
  • 4 to 6 – 0.008

1018 Cold Finished Flat Bar Tensile Strength

Tensile Strength
PSI MPa
53,700 340

1018 Hex Bar Yield Strength

Yield Strength
PSI MPa
53,700 340

SAE 1018 Rod Forging Method

  • Forging Temperature 900°C (min)
  • After Forged (Air cooling)
  • Heat upto 1150°C – 1280°C

Equivalent Material of AISI 1018 Bar

EN DIN AFNOR BS JIS
C15E (1.1141) 1.0401, C15, CK15 XC15 080M15 S15C

Applications of SAE 1018 Steel Flat Bar

  • Fixtures
  • Pins
  • Sprocket assemblies
  • Axles, bolts
  • Machinery parts
  • Spindles
  • Shafts

Heat Treatment of 1018 CF Flat Bar

Normalising Annealing Stress Relieving Carburising Core Refining Carburizing
 890–940°C 870–910°C 500–700°C 880 –920°C 780–820°C 1,650–1,700°F

Different Sizes of SAE 1018 Round Bar

Forms Round Square Flat/Blcoks
Size(mm) Φ80-Φ1000 100 x 100-600×600 Thickness :120-800 Width:120-1500

1018 Square Bar Carbonitriding

Properties Values
Case depth (mm) 0.40-0.50
Furnace temperature (°C) 870
Time in furnace 2 h

Destructive Testing vs Non-Destructive Testing Methods

Destructive Testing vs Non-Destructive Testing Methods

Specific Heat of 1018 Cold Rolled Steel Flat Bar

Properties Values
Treatment or condition Annealed
Value (J/Kg·K) 486 519 599
Temperature (°C) 50-100 150-200 350-400

SAE 1018 Material Coefficients of Linear Thermal Expansion

Properties Values
Treatment condition Annealed
Value (10-6/K) 12 13.5 14.5
Temperature (°C) 0-100 0-400 0-600

Characteristics of SAE 1018 Round Bar

  • Excellent Machinability
  • Cost Efficiency
  • Low Carbon Content
  • Moderate Strength
  • Good Weldability

Specialized Testing Methods of AISI 1018 Round Bar

  • Chemical Analysis
  • Electrical Conductivity
  • Microstructure Analysis
  • Spectroscopy

AISI 1018 Bar Electrical Resistivity

Properties Values
Treatment or condition Annealed
Value (μΩ·m) 0.16 0.22 0.29
Temperature (°C) 0 100 200

Chemical Compatibility of AISI 1018 Round Bar

Media Acid, Acetic and Propionic Carbon Dioxide (Dry) Chlorinated Solvents (Wet) Acid, Hydrofluosilicic Acid, Sulfuric Allyl Alcohol Acetaldehyde
Compatibility Acceptable Acceptable Acceptable Not Available Not Available Questionable Not Recommende

Thermal Properties of SAE 1018 Rod

Property Melting point Specific heat capacity Thermal conductivity
Value 1289 – 1478 °C 486 J/(kg·K) 36 W/(m·K)

Cold-drawn Mechanical Properties of 1018 Flat Bar

Size in MM 76 * 32 76 * 32 76 * 32
R N/mm2 581 553 530
Rp 0.2 N/mm2 556 438 384
A % 13.4 17.6 27.2
Z reduct. % 60.7 60.8 59
HB   176 162 159
M. elasticity GPa 253 251 186

1018 Hex Bar Hot-Rolled Mechanical Properties

Properties Values
Size in MM 22
R N/mm2 634
Rp 0.2 N/mm2 386
A % 27
Z reduct. % 48
HB GPa > 197