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1050,1.1210 Steel suppliers
1. Introduction of 1050 steel
1050 is a medium carbon, medium tensile steel with reasonable strength and toughness.
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.
2. Supply Range of 1050 steel
Shape Specification Surface
Round bar Dia max 800mm
Length: max 9m Black, peeled, machined(turned), polished(grounded)
Flat bar Thickness: max 800mm
Width: max 2300mm Length: 9m Black, peeled, machined, polished(ground,grinded, milled)
Note: We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
3. 1050 steel 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
4. 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
4. Heat Treatment
Full annealing of small 1050 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.
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 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 1050 by this treatment.
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.
Mach-inability 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.
This grade is readily welded with the correct procedure. Welding in the through-hardened or flame or induction-hardened conditions is not recommended.
Low-hydrogen electrodes are recommended together with preheat at 300-800ºF (150-430ºC to be maintained during welding, Cool slowly in sand or ashes and stress relieve where possible. It may be that in certain instances normalizing may be called for after welding.
5. Applications
Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc. 1050,1.1210 Steel suppliers

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