JIS SNCM220 steel manufacturers and suppliers,as forged supplied in Round Rods,Square/Flat Bars,Rollers,Shafts,Blocks,as rolled mainly provided in Round Bars.
SNCM220 steel is a common nickel-molybdenum alloy steel accding to JIS Japan standard. After carburizing,the surface of SNCM220 has a high degree of hardness, abrasion resistance and contact fatigue strength. At the same time,the core remains good toughness and can withstand the high impact load.
Carbon:0.17/0.23; Silicon:0.15/0.35; Manganese:0.60/0.90;
Chromium:0.40/0.65; Molybdenum:0.15/0.30; Nickel:0.40/0.70;
3.Form & Size
– SNCM220 Alloy Steel as Forged
1)Fuhongsteel manufactures and supplies SNCM220 forged steel round bars,square bar,flat bar,shaft,and blocks.
2)JIS SNCM220 alloy steel size available:
(Forged flat bars,Blocks,Shafts and forging pieces can be customized)
– SNCM220 Alloy Steel as Rolled
1)Fuhongsteel is a quality steel supplier of SNCM220 rolled steel round bars.
2)JIS SNCM220 alloy steel round bar size available:
Length: 3,000-10,000mm(can be customized)
4.Tolerances on Dimension & Straightness
3)Deviation from straightness:with 360° rotary device 2mm/meter(max)
2)Mechanical properties -Tensile strength -Yield point -Percentage reduction of area after fracture -Elongation after fracture -Impact test: Impact test must be done on three (3) different ISO-V samples at +20 C°
3)Non metallic inclusions
4)Grain size: more than 5,preferred to 8;
5)Ultra sonic testing 360° complete round testing: Sep1921-84,A388.
SNCM220 steel is widely used in driving bevel gears,crown wheels,shafts,bolts for automotive and gear components. JIS SNCM220 is also suitable for direct hardening.
1)Preheat SNCM220 forged alloy steel carefully.
2)Raise the forging temperature up to 1150-1200°C.
3)Keep the forging temperature above 850°C.
Hardening&Tempering(quenched and tempered and after stress relieved)
1)Heating SNCM220 steel uniformly to 850°C;
2)JIS SNCM220 alloy steel should be quenched in the oil;
3)Heat the material to the temperature 550°C;
4)Soak at this temperature for at least 2 hours;
5)SNCM220 alloy steel should be cooled in the furnace.
In case after QT a straightening process is necessary then the products should be tempered and distorsion-poor annealed with at least more than 625°C.
1)Heating SNCM220 forged steel thoroughly to 800-850°C;
2)Cool slowly to the temperature 550°;
3)Complete annealing the steel in the air.
1)heat JIS SNCM220 steel until the temperature up to 850°C;
2)Then cool the material down to the room temperature in the air.
Enquiry for JIS SNCM220 Steel Round Rods,Square/Flat Bars,Rollers,Shafts and Blocks.