SAE 1045 Steel

sae 1045 steel

SAE 1045 Equivalent Indian Standard

Country ISO
Standard ISO 683/18-1996
Grades C45E4

Table of contents

AISI 1045 Bar Specification

AISI 1045 Bar

SAE 1045 Bar Sizes
  • Diameter: 800mm
  • Metric: 10 – 150 mm
  • Imperial: 3/8″ – 6″
  • Hexagons: 3/4″ / 100 mm
K1045 Round Bar Length
  • 9 Metrs.
AISI 1045 Bar Temperature Range
  • 850°C – 1250°C
SAE 1045 Round Bars Tolerance
  • H11, H10, H9
AISI 1045 Steel Cold Drawn Rod Typical Grade
  • SAE 5140, 1045, 1020, 1008, 4140
Standard of SAE 1045 Steel Bright Bars
  • AISI 1045
Finish of AISI 1045 Hex Bars
  • Black, Polish & Bright
Form of AISI 1045 Steel Flat Bars
  • Round
  • Hex
  • Billet
  • Rectangle
  • Forging
  • Square
  • Wire Mesh
  • Ingot
DIN 1.1191 Square Bars Application
  • Gears
  • Axles
  • Studs
  • Shafts
  • Rolls
  • Sockets
  • Ratchets
AISI 1045 Medium Carbon Steel Forged Bars Equivalent Grades
  • UNS: G10450
  • WERKSTOFF NR.: 1.1191
SAE 1045 Round Bars Surface Finish
  • Peeled
  • Polished
  • Black
  • Machined
Heat Treatment of AISI 1045 Steel Cold Drawn Rod
  • Normalizing
  • Tempering
  • Annealing
  • Hardening

1045 Medium Tensile Carbon Steel Bars in Black and Bright Drawn Process

SAE 1045 Steel Bar Mechanical Properties

Properties Imperial Metric
Poissons Ratio (Typical For Steel) 0.290 0.290
Hardness, Brinell 163 163
Hardness, Rockwell B 84
Ultimate Tensile Strength 81900 Psi 565 MPa
Elongation at Break (in 50 mm) 16%
Modulus of Elasticity 29000 Ksi 200 GPa
Bulk Modulus 20300 Ksi 140 GPa
Tensile Strength, Yield 45000 Psi 310 MPa
Hardness, Knoop 184
Hardness, Vickers 170
Reduction of Area 40%
Shear Modulus 11600 Ksi 80 GPa

AISI 1045 Steel Cold Drawn Round Bar with Smooth and Oiled Surface

K1045 Round Bar Surface Finish

  • Turned
  • Peeled
  • Polished
  • Black-Forged
  • Black-Rolled
  • Grinding
  • Cold Drawn
SAE 1045 Steel Bright Bar as per EN 100832, ASTM A29 and AF65 Standard

SAE 1045 Round Bar Equivalent Standards

Countries USA Japan France/UK/Germany
Grades 1045 S45C C45(1.0503)
Standard ASTM A29/A29M-05 JIS G4051-2009 EN 2-2006/10083
AISI 1045 Carbon Steel Hex Bars for Automotive Components and Mechanical Engineering

AISI 1045 Bar Applications

AISI 1045 Bar Applications

DIN 1.1191 Square Bars Size Chart

Nominal Size’s (Inch) Weight in (lbs/ft) Length in Inch
3/8″ 0.376 144″
5/8″ 1.043
1-1/4″ 4.173
1/2″ 0.668
7/8″ 2.045
1-1/2″ 6.008

Most Common Types of AISI 1045 Bar

SAE 1045 Round Bars

SAE 1045 Round Bars

AISI 1045 Cold Drawn Rod

AISI 1045 Cold Drawn Rod

SAE 1045 Steel Bright Bars

SAE 1045 Steel Bright Bars

AISI 1045 Hex Bars

AISI 1045 Hex Bars

AISI 1045 Steel Flat Bars

AISI 1045 Steel Flat Bars

DIN 1.1191 Square Bars

DIN 1.1191 Square Bars

AISI 1045 Forged Bars

AISI 1045 Forged Bars

SAE 1045 Chemical Composition

Element Percentage (%)
Sulfur (S) 0.05
Iron (Fe) 98.7
Carbon (C) 0.45
Manganese (Mn) 0.8
Phosphorus (P) 0.4

AISI 1045 Hex Bars Standard Wise Chemical Composition

Standard Chemical Composition (%)
Si Mn S Cr P Mo C Ni
ASTM A29/A29M – 05 Max 0.10 0.60 – 0.90 Max 0.050 – Max 0.040 – 0.43 – 0.50 –
ISO 683/18 – 1996 0.10 – 0.40 0.50 – 0.80 ≤0.035 – ≤0.035 – 0.42 – 0.50 –
JIS G4051 – 2009 0.15 – 0.35 0.60 – 0.90 Max 0.035 – Max 0.030 – 0.42 – 0.48 ≤0.20
EN 10083/2 – 2006 Max 0.40 0.50 – 0.80 Max 0.045 Max 0.40 Max 0.045 Max 0.10 0.42 – 0.50 Max 0.40

Physical Properties of AISI 1045 Steel Flat Bars

Property Imperial Metric
Density 0.284 lb/in³ 7.87 g/cc

SAE 1045 Medium Carbon Steel Forged Bars Dimensions

Grade Max Min
1045 800 x 800 20 x 20

AISI 1045 Bar Heat Treatment Process

Normalizing Induction or Flame Hardening
Stress Relieving Hardening
Annealing Tempering

K1045 Round Bar Properties for Heat Treatment

Properties Temperature (°C) Cooling Method
Hot or Forging Rolling 1100 – 850 –
Hardening 820 – 860 Oil, Water
Soft Annealing 680 – 710 Furnace
Tempering 550 – 660 Air
Normalising 840 – 880 Air

DIN 1.1191 Square Bars HS Code

Grade HSN Code
AISI 1045 Bar 7214

AISI 1045 Hex Bars Certification

  • Report of Ultrasonic Test
  • Heat Treatment Processing
  • Surface Hardness
  • Forging Ratio
  • Analysis of Chemical
  • Inclusion of Non Metallic
  • Size Grain

SAE 1045 Steel Bright Bars Cold Drawn Size

Cold Drawn Size (mm) Upto 16mm 39 – 63mm 17 – 38mm Polished & Turned
Tensile Strength (Mpa) Max 950 800 830 730
Min 690 640 650 600
Hardness HB Max 280 235 245 215
Min 205 190 195 179
Elongation in 50mm (%) Min 8 9 8 14
Yield Strength (Mpa) Max 760 630 650 450
Min 540 500 510 300

AISI 1045 Steel Cold Drawn Rod Welding Procedure

  • Stress Relieving at 1022°F – 1220°F (550°C – 660°C)
  • Preheating to 392°F – 572°F (200°C – 300°C)
  • Maintaining About Same Temperature During the Welding
  • Slowly Cooling Using Ashes or Sand

SAE 1045 Steel Bars Hardness Vs Temperature

Grade Quenching Tempering Temperature,ºC
Hardness,HRC Temperature,ºC 200ºC 400ºC 550ºC 150ºC 300ºC 500ºC 600ºC
SAE 1045 58-59 840ºC 55 41 26 58 50 33 22