1045 Steel Round Bar Material SAE 1045 SAE 1045 Steel Manufacturer
SAE 1045 steel is an unalloyed medium carbon grade under the
standards of the American Society of Automotive Engineers(SAE).
SAE 1045 steel is generally delivered in an unheated or normalized
conditon.When delivered in the normalized state, SAE 1045 steel has
good cold and hot workability and average strength, so it is widely
used in machinery manufacturing.
SAE 1045 steel can obtain good mechanical properties through
quenching and tempering heat treatment.After QT, the material
properties have been greatly improved and can be used to
manufacture various important structural parts.
Forged Round Bar 1.0503 C45 Chemical Compostion
| Grade | C | Si | Mn | P | S |
| 1045 | 0.43-0.50 | 0.15-0.35 | 0.60-0.90 | ≤0.04 | ≤0.05 |
SAE 1045 STEEL RELATED STANDARD & EQUIVALENT GRADE
CHINA | GB 699:45#
Europe | EN10083:C45/1.0503
JAPAN | JIS G4051:S45C
UK | BS970:EN8/080M40
SAE 1045 STEEL HEAT TREATMENT
SAE 1045 Steel Normalizing
Normalizing temperature:830-880℃
Holding time:Depending on the workpiece size and loading
capacity.According to our experience,if the size of SAE 1045 steel
is small, the holding time is short. As the size becomes larger,
the corresponding holding time will be extended.However, it is not
that the longer the holding time, the better the normalizing
effect. On the contrary, too long holding time will lead to coarse
grains and overburning of the material, which will eventually
affect the properties of the material.
Cooling method: air cooling.Rapid cooling effect can also be
achieved by spraying water mist.It should be noted that too fast
cooling is not advisable, because it is easy to cause cracking of
the material.
According to our experience,Normalizing is an important heat
treatment process for SAE 1045 steel.First, for general purpose
parts, normalizing can be used as the final heat treatment process
for SAE 1045 steel to meet the specified properties.
Secondly, it can be used as a pre-preparation process for the final
quenching and tempering heat treatment of SAE 1045 steel, the
purpose is to refine the grain and homogenize the structure, and
prepare the structure for the final heat treatment.
SAE 1045 Steel Mechanical Property in Normalized Condition
Tensile Strength
Mpa | Yield Strength
Mpa | Elongation
% | Reduction of Area
% | Impact Charpy-V
J | Hardness
HBW |
| 670-720 | ≥340 | 15-18 | 45-50 | ≥50 | 170-240 |
SAE 1045 Steel Annealing
According to our experience, the purpose of annealing heat
treatment for SAE 1045 steel is usually to soften the surface
hardness for machining.
The annealing temperature of SAE 1045 steel is generally controlled
at 820-840°C.After a sufficient holding time, the material can be
cooled to room temperature in the furnace.The measured surface
hardness of the material is usually lower than 200HBW, which is
very easy for subsequent processing.
SAE 1045 Steel Quenching & Tempering(QT)
When SAE 1045 steel is applied to important structural parts, such
as connecting rods, gears, bolts and shafts working under
alternating loads, the performance of SAE 1045 steel cannot meet
the requirements after normalizing heat treatment.At this time, we
need to consider quenching and tempering heat treatment of SAE 1045
steel, which can achieve good comprehensive mechanical properties.
Quench Temperature:820-840°C
Quench Medium: Water/Oil
Quenching Hardness:55-60HRC
Tempering temperature:500-540°C
Tempering Hardness: 28-32HRC
SAE 1045 Steel Tempering Temperature Vs Hardness
| Grade | Quenching | Tempering Temperature,ºC |
| Temperature,ºC | Hardness,HRC | 150ºC | 200ºC | 300ºC | 400ºC | 500ºC | 550ºC | 600ºC |
| SAE 1045 | 840ºC | 58-59 | 58 | 55 | 50 | 41 | 33 | 26 | 22 |
SAE 1045 Steel Mechanical Property with Quenched and Tempered
Condition
| Quenching Temperature,ºC | Tempering Temperature,ºC | Tensile Strength
Mpa | Yield Strength
Mpa | Elongation
% | Reduction of Area
% | Impact Charpy-V
J | Hardness |
| 820-840ºC, Water Quench | 180-200ºC | ≥1300 | ≥1150 | ≥6 | ≥22 | 15-25 | 50HRC Max |
| 820-840ºC, Water Quench | 560-620ºC | 700-850 | 450-560 | 15-17 | 45-50 | 60-80 | 196-241 HBW |
About Guangda For forged round bar
- Directly manufactuer -- One stop for quality forged round bars
- Sold more than 100k tons for the round bars per year for overseas
market.
- Register the exclusive trademark of GD in Europe.
- Experience for more than 10 years with quick delivery time and fast
service.
- Listed company. Strong scientific research ability , Strength for
Market experience and customer service .
- Certificate PED,DNV, BV, Rina, ISO, GL, ABS, LR etc.
1045 Steel Round Bar
Material SAE 1045
SAE 1045 Steel
