36CrNiMo4 / 1.6511 Alloy Steel
36CrNiMo4 steel is a common nickel-molybdenum alloy steel accding to DIN standard,while 1.6511 steel is as per W-Nr Germany standard.It is a high strength steel and has good comprehensive mechanical properties.DIN 36CrNiMo4 is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength.
Carbon:0.32/0.40; Silicon:Max0.40; Manganese:0.50/0.80;
Chromium:0.90/1.20; Molybdenum:0.15/0.30; Nickel:0.90/1.20;
AISI/ASTM: 4340; JIS/KS: SNCM439;
EN 10250 – 3 : 2000 Open steel die forgings for general engineering purposes.
EN 10297 – 1 : 2003 Seamless circular steel tubes for mechanical and general engineering purposes.
4.Form & Size
-DIN 36CrNiMo4 Alloy Steel as Forged
1)Fuhongsteel manufactures and supplies 36CrNiMo4 forged steel round bars,square/flat bars,shafts,and blocks.
2)DIN 36CrNiMo4 alloy steel size available:
(Forged flat bars,Blocks,Shafts and forging pieces can be customized)
-W-Nr 1.6511 Alloy Steel as Rolled
1)Fuhongsteel is a quality steel supplier of 1.6511 rolled steel round bars.
2)W-Nr 1.6511 alloy steel round bar size available:
Length: 3,000-10,000mm(can be customized)
5.Tolerances on Dimension & Straightness
3)Deviation from straightness:with 360° rotary device 2mm/meter(max)
1)Chemical composition:Related DIN 7527-6 , EN 10250-3
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:According to DIN 50601 more than 5,preferred to 8;
5)Ultra sonic testing 360° complete round testing: Ultra sonic according to EN 10228-3
36CrNiMo4 steel is always used in permanently stressed components with large cross sections for automotive and mechanical engineering. DIN 1.6511 steel is good for economic performance under severe dynamic stress, parts must be designed for optimum strength or toughness.
1)Preheat 1.6511 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 36CrNiMo4 steel uniformly to 850°C;
2)W-Nr 1.6511 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)36CrNiMo4 alloy steel bars 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 1.6511 forged steel thoroughly to 800-850°C;
2)Cool slowly to the temperature 550°;
3)Complete annealing the steel in the air.
1)Heat DIN 1.6511 steel until the temperature up to 850°C;
2)Then cool W-Nr 36CrNiMo4 steel down to the room temperature in the air.
Enquiry for DIN 36CrNiMo4 / 1.6511 steel round bars,square/flat bars,rollers,shafts and blocks.