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.
Forms
AISI SAE 1045 material is widely used in industrial applications where increased wear resistance and strength are required, typical applications including: Lightweight gears, shafts, shafts, spindles, pins, guide rods, connecting rods, screws, worms, crankshafts, components of machines, etc. .
Datasheet and specifications
The table below provides the technical data sheet of AISI SAE ASTM 1045 steel, including chemical composition, physical properties, mechanical properties, etc.
Chemical composition
| AISI ASTM 1045 Chemical Composition (%) | ||||
| Steel Grade (UNS) | W | Mn | P (≤) | S (≤) |
| 1045 (G10450) | 0.43-0.50 | 0.60-0.90 | 0.040 | 0.050 |
Physical properties
| AISI SAE 1045 linear thermal expansion coefficients | ||
| 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 | |
| Thermal conductivity of material 1045 | ||
| Value (W/m·K) | Temperature (°C) | Treatment or condition |
| 50.8 | 100 | Annealed |
| Thermal conductivity of material 1045 | ||
| Value (W/m·K) | Temperature (°C) | Treatment or condition |
| 50.8 | 100 | Annealed |
| Electrical Resistivity of Carbon Steel AISI SAE 1045 | ||
| Value (μΩ·m) | Temperature (°C) | Treatment or condition |
| 0.162 | 20 | Annealed |
| 0.223 | 100 | |
Mechanical properties
1045 mechanical properties of the material are listed in the following table, including tensile strength, yield strength, elongation, shrinkage and hardness, etc.
| Mechanical Properties of 1045 Carbon Steel (Sizes Ranging: 19-32mm) | ||||||
| Steel (UNS) | Tensile strength (Mpa) ≥ | Yield strength (Mpa) ≥ | Elongation by 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 drawing | |
| 585 | 505 | 12 | 45 | 170 | Annealed, cold drawn | |
1045 Steel Heat Treatment
Normalizing
The 1045 normalization temperature range is 830-900°C and the typical normalization temperature is 860°C.
Austenitization
The austenitizing temperature of SAE 1045 induction hardening carbon steel is 800-845°C.
Complete Annealing
The annealing temperature of AISI 1045 carbon steel is 790-870°C, cooling cycle from 790 to 650°C at a rate of 28°C/h in the furnace, and can obtain HBW hardness range from 156 to 217 .(Suitable for forgings with a section thickness of up to 75 mm. For sections up to 25 mm thick, the temperature time is generally at least 1 hour; for every 25 mm increase in thickness, 0.5 h is added.)
Hardening
The austenitizing heating to 845°C, the quenching medium is water or brine, and the part with wall thickness ≤6.35mm is quenched in oil, and the hardness should not be less than 55 HRC.
Welding
For welding thickness is ≤13mm, the preheating and interpass temperature is at least 150°C under low hydrogen conditions, except low hydrogen temperature is minimum 177°C, heat treatment is required after welding temperature range is 590-675°C.
For welding thickness
