SAE AISI 1045 Steel Properties, C1045 Carbon Steel Yield Strength, Equivalent
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.
ASTM SAE AISI 1045 Carbon 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 |