AISI 5120 Steel Coil, JIS SCr420, DIN 20Cr4
5120 steel coil is a low carbon, low alloy chromium, molybdenum, nickel case hardened alloy steel coil. It also is called GB 20Cr, DIN 20Cr4 and JIS SCr420 steel. It is formed into rolls by hot pressing and cold pressing, and has good wear resistance, weldability and toughness. It is widely used in the world. Good machinability under high temperature normalizing or quenching and tempering conditions.5120 steel composition and more information are as below.
|AISI 5120 Steel Coil Supply Range|
|Coil/Sheet/Plate||According to customer requirements|
5120 Steel Coil Grade Equivalent Chart
|Standard||ASTM A1031||EN 10084-1998||JIS G 4104-1979|
5120 Steel Coil Chemical Composition
|Grade||C (%)||Mn(%)||P(%)||S (%)||Si (%)||Cr (%)||Ni(%)||Cu(%)|
5120 Steel Coil Physical Properties
|Density||7.85 g/cc||0.284 lb/in³|
20Cr4 Steel Coil Mechanical Properties
|Tensile Strength, Ultimate||1020 MPa||148000 psi|
|Yield strength||848 MPa||123000 psi|
|Bulk modulus(typical for steel)||160 GPa||23200 ksi|
|Shear modulus(typical for steel)||80.0 GPa||11600 ksi|
|Elongation at Break||14%||14%|
|Modulus of Elasticity||205 GPa||29700 ksi|
|Hardness, Knoop(converted from Brinell hardness)||338||338|
|Hardness, Rockwell B(converted from Brinell hardness)||99||99|
|Hardness, Rockwell C(converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)||34||34|
|Hardness, Vickers(converted from Brinell hardness)||329||329|
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ASTM 5120 Steel Coil Application
Generally used in boilers, containers, flanges, ship plates, shipbuilding, automobile manufacturing and construction machinery and equipment, etc., and also used to manufacture carburized parts with high core strength requirements.
AISI 5120 Steel Coil Characteristics
1. It is a low alloy steel coil containing chromium, molybdenum and nickel.
2. Good toughness, good weldability, high strength and hardenability, and excellent comprehensive physical properties.
3. Due to its excellent versatility and practicality, it is widely used in the industry.
4. Compared to hot rolled steel sheet, steel coil is thinner and therefore lighter, and is an ideal material for applications requiring weight reduction.
5. Due to the high surface hardness after hardening, it has good wear resistance.
6. Excellent resistance to oxide pitting and crevice corrosion cracking.
5120 Steel Heat Treatment
Annealing: This alloy is seldom annealed. Structures of better machinability are developed by normalizing or by isothermal transformation after forging.
Normalizing: 1650-1700ºF (900-930ºC.)
Carburizing: 1650-1740ºF (900-950ºC) and oil quench.
Hardening: Core: 1560-1620ºF (850-880ºC) and oil quench.
Tempering: 340-410ºF (170-210ºC.)
Machinability: The alloy is best machined in the normalized condition prior to case hardening.
Weldability: The alloy is easily welded, but should be welded prior to case hardening.
5120 Steel Coil Supply
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. As a professional 5120 steel coil supplier, please contacts us for any request of AISI 5120/DIN 20Cr4 steels materials. Songshun Steel always with you.