AISI 1050 Steel (UNS G10500) in Coil Form
Description
AISI 1050 is a high-carbon, cold rolled steel containing approximately 0.50% carbon that can be hardened by heat treatment to a maximum hardness of approximately Rockwell C 58. Soft annealed high carbon steel is intended for applications requiring moderate forming, while soft spheroidized annealed product is intended for applications requiring maximum cold forming. The soft spheroidized annealed product is processed to give the lowest hardness for maximum formability. This grade of steel is used for the manufacture of blades, brackets, brake discs, clips, clutches, springs, washers and gears and for a wide range of applications that can make use of its good combination of mechanical properties.
Introduction
Carbon steels contain carbon as the main alloying element. They are designated by AISI four-digit numbers, and contain 0.4% of silicon and 1.2% of manganese. Molybdenum, chromium, nickel, copper, and aluminium are present in small quantities. Impurities such as sulfur and phosphorous are also found in these steels.
Chemical Composition
The chemical composition of AISI 1050 carbon steel is tabulated below.
Element Content (%) Iron, Fe 98.46-98.92 Manganese, Mn 0.60-0.90 Carbon, C 0.470-0.55 Sulfur, S ≤ 0.050 Phosphorous, P ≤ 0.040 Physical Properties
The following table shows the physical properties of AISI 1050 carbon steel.
Properties Metric Imperial Density 7.85 g/cm3 0.284 lb/in³ Mechanical Properties
The mechanical properties of the cold drawn AISI 1050 carbon steel are outlined in the following table.
Properties Metric Imperial Tensile strength 690 MPa 100000 psi Yield strength 580 MPa 84100 psi Shear modulus (typical for steel) 80 GPa 11600 ksi Bulk modulus (typical for steel) 140 GPa 20300 ksi Elastic modulus 190-210 GPa 27557-30458 ksi Poisson’s ratio 0.27-0.30 0.27-0.30 Elongation at break (in 50 mm) 10% 10% Reduction of area 30% 30% Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 - Hardness, Brinell 197 197 Hardness, Knoop (converted from Brinell hardness) 219 219 Hardness, Rockwell B (converted from Brinell hardness) 92 92 Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13 Hardness, Vickers (converted from Brinell hardness) 207 207 Thermal Properties
The thermal properties of AISI 1050 carbon steel are given in the following table.
Properties Metric Imperial Thermal conductivity (typical steel) 49.8 W/mK 346 BTU in/hr.ft².°F Other Designations
Other designations that are equivalent to AISI 1050 carbon steel include:
HEAT TREATMENT
- AMS 5085
- ASTM A29 (1050)
- ASTM A510 (1050)
- ASTM A513
- ASTM A519 (1050)
- ASTM A576 (1050)
- ASTM A682 (1050)
- ASTM A827
- ASTM A830
- QQ S700 (C1050)
- SAE J1397 (1050)
- SAE J403 (1050)
- SAE J412 (1050)
ANNEALING
Full annealing of small C1050 forgings is carried out from 1450-1600ºF (790-870ºC)
followed by furnace cooling at 50ºF (28ºC) per hour, to 1200ºF (650ºC) soaking and air cooling.
NORMALIZING
The normalizing temperature range for this grade is typically 1650-1700ºF (900-925ºC.)
Normalizing is followed by cooling in still air. When forgings are normalized before hardening and tempering or other heat treatment, the upper range of the normalizing temperature is used. When normalizing is the final treatment, the lower temperature range is used.
HARDENING
Hardening of this grade is carried out from an austenitizing temperature of 1500-1600ºF (820-870ºC) followed by oil or water quenching.
Flame and induction hardening may be carried out by heating quickly to the desired case depth and quenching in water or oil. This should be followed by a tempering treatment at 300-400ºF (150-200ºC) to reduce stresses in the case, without affecting its hardness. A surface hardness as high as Rc 61 may be obtained from C1050 by this treatment.
TEMPERING
Tempering after normal hardening and oil or water quenching is carried out at 750-1260º F (400-680ºC) to give the required mechanical properties as determined by practical experience.
MACHINABILITY
Machinability of C1050 is good providing the full annealing cycle described above is used, A coarse lamellar pearlite to coarse spheroidite microstructure gives optimum machinability in C1050.
WELDABILITY
This grade is readily welded with the correct procedure. Welding in the through-hardened or flame or induction-hardened conditions is not recommended.
If you need product information or price, please fill in your contact information in the form below, we will usually contact you within 12 hours. You could also email me info@lyapm.com to get prompt reply.
NO.501 Dongshe Road, Dongjing Town, Songjiang District, Shanghai,China,201600
. 
Mobile/Whatsapp/Zalo/Lines/Skype
General Inquiry
company profile download