Cold Rolled Steel Sheet Quality Standard SAE 1020 20# Thickness 2.5
mm 1250*2500mm
SAE AISI 1045 Steel
ASTM SAE AISI 1045 steel is one of the commonly used medium carbon
steels with an average carbon content of 0.45%, medium tensile
properties, good strength, toughness and wear resistance. It can be
treated by annealing, flame treatment or induction hardening.
C1045 is also known as 1045 cold rolled steel (cold worked), and
1045 hot rolled steel is known as 1045 HR.
Applications
AISI SAE 1045 material is widely used in industrial applications
where higher wear resistance and strength are required, typical
applications including: Light gears, shafts, axles, spindles, pins,
guide rods, connecting rods, bolts, worms, crankshafts, machine
components, etc.
Datasheet & Specification
The table below gives the AISI SAE ASTM 1045 steel data sheet
including chemical composition, physical properties, mechanical
properties, etc.
Chemical Composition
| AISI ASTM 1045 Chemical Composition (%) |
| Steel Grade (UNS) | C | Mn | P (≤) | S (≤) |
| 1045 (G10450) | 0.43-0.50 | 0.60-0.90 | 0.040 | 0.050 |
Physical Properties
| AISI SAE 1045 coefficients of linear thermal expansion |
| Value (10-6/K) | Temperature (°C) | Treatment
or condition |
| 11.6 | 0-100 | Annealed |
| 12.3 | 0-200 |
| 13.1 | 0-300 |
| 13.7 | 0-400 |
| 14.2 | 0-500 |
| 14.7 | 0-600 |
| 15.1 | 0-700 |
| Material 1045 thermal conductivity |
| Value (W/m·K) | Temperature (°C) | Treatment
or condition |
| 50.8 | 100 | Annealed |
| Material 1045 thermal conductivity |
| Value (W/m·K) | Temperature (°C) | Treatment
or condition |
| 50.8 | 100 | Annealed |
| Electrical Resistivity of AISI SAE 1045 Carbon Steel |
| Value (μΩ·m) | Temperature (°C) | Treatment
or condition |
| 0.162 | 20 | Annealed |
| 0.223 | 100 |
Mechanical Properties
1045 material mechanical properties are listed in the following
table including tensile strength, yield strength, elongation,
reduction and hardness, etc.
| 1045 carbon steel mechanical properties (sizes ranging: 19-32 mm) |
| Steel (UNS) | Tensile strength (Mpa) ≥ | Yield strength (Mpa) ≥ | Elongation in 50 mm, % ≥ | Reduction in area, % ≥ | Hardness (HB) | Processing, condition or treatment |
| AISI SAE 1045 (G10450) | 565 | 310 | 16 | 40 | 163 | Hot rolled |
| 625 | 530 | 12 | 35 | 179 | Cold drawn |
| 585 | 505 | 12 | 45 | 170 | Annealed, cold drawn |
1045 Steel Heat Treatment
Normalizing
1045 normalizing temperature range is 830-900 °C and the typical
normalizing temperature is 860 °C.
Austenitizing
The austenitizing temperature for SAE 1045 induction hardening
carbon steel is 800-845 °C.
Full Annealing
The annealing temperature for AISI 1045 carbon steel is from
790-870 °C, cooling cycle from 790 to 650 °C at a rate of 28 °C/h
in furnace, and can get the HBW hardness range from 156 to 217.
(Suitable for forgings with a section thickness of up to 75 mm. For
the section up to 25 mm thick, the temperature time is usually at
least 1 hour; for each 25 mm thick increase, 0.5 h is added.)
Hardening
The austenitizing heating at 845 °C, the quenching medium is water
or brine, and the workpiece with wall thickness ≤6.35 mm is oil
quenched, and the hardness should be no less than 55 HRC.
Welding
For the thickness of the weldment is ≤13mm, the preheating and
interpass temperature is at least 150 °C under low hydrogen
condition, other than low hydrogen, the temperature is minimum 177
°C, heat treatment is required after welding and the temperature
range is 590-675 °C.
For the weldment thickness (t) 13<t≤100mm, the preheating and
interpass temperature is ≥205 °C (under low hydrogen condition),
≥230 °C (except low hydrogen), and the postweld heat treatment
temperature is 590-675 °C.
1045 Steel Equivalent Grade
ASTM AISI SAE 1045 carbon steel equivalent to European EN (Germany
DIN EN, British BSI, French NF…), Chinese GB and Japanese JIS
standard.
| AISI 1045 equivalent |
| US | Germany | China | Japan | ISO |
| Standard | Grade (UNS) | Standard | Steel name (Steel number) | Standard | Grade | Standard | Grade | Standard | Grade |
AISI
SAE;
ASTM A29/A29M | 1045 (G10450) | EN 10083-2 | C45 (1.0503) | GB/T 699 | 45 Steel | JIS G 4051 | S45C |
Our Advantages
High precision
Cold-rolled high-quality thin steel plate: mainly includes various
high-quality steel cold-rolled thin plates, the most commonly used
is carbon structural steel plate, especially cold-rolled thin steel
plate for deep drawing, which is cold-rolled thin plate made of
low-carbon high-quality steel 08Al. The quality is divided into
three groups;1 ,2 and 3, which represent particularly high-grade,
high-grade, and higher-finish surfaces, respectively.
Extensive use
Cold-rolled steel plate with smooth surface and excellent
processing, used for home appliances such as automobiles,
refrigerators, washing machines, industrial equipment, and various
building materials. With the development of the economy,
cold-rolled steel sheets have been called necessary materials in
modern society. Classification of cold-rolled products: hot-rolled
pickling, hard-rolled coil, ordinary cold-rolled, galvanized
(electro-galvanized, anti-fingerprint, hot-dip galvanized),
galvanized, electro-tinned, color-coated, electrical steel (silicon
steel sheet) wait.
Strict craftsmanship
Cold rolled steel coils generally use hot-rolled strip steel with a
thickness of 1.5-6 mm as the cold rolled billet. The main processes
include pickling, cold rolling, degreasing, annealing, leveling,
and shearing (cross cutting, longitudinal cutting). If producing
coated plates, there are also plating or coating processes such as
electroplating tin, hot tin coating, and hot zinc coating. The
production process of cold rolled billets is as follows: hot rolled
sheet coils (raw materials) - acid washing - cold rolling -
degreasing - annealing - leveling - shearing - finished product
delivery.
Provide deep processing
The company's slitting machine, slitting line, cuts cold rolled
steel coils into strips of various widths as needed, and then folds
the strips into small coils for use in the next process. It is a
necessary equipment for precision cutting of transformers, motor
industries, and other metal strips. It is mainly used for strip
cutting of materials such as tinplate, galvanized iron, silicon
steel sheet, cold rolled strip, stainless steel strip, aluminum
strip, steel strip, and other coils.
