Specifications

High quality alloy structural steel 20CrMo/ JIS SCM420/ASTM 4118/DIN 18CrMo4(1.7243)/NF 18CD4
(1.7243)/NF 18CD4

Alloy Steel 20CrMo/ JIS SCM420/ASTM 4118/DIN 18CrMo4(1.7243)/NF 18CD4

Standards:

GB 20CrMo, JIS SCM420, ASTM 4118, DIN 18CrMo4(1.7243),NF 18CD4

 

Chemical Composition:

C	Si	Mn	S	P	Cr	Ni	Cu	Mo
0.17-0.24	0.17-0.37	0.40-0.70	≤0.035	≤0.035	0.80-1.10	≤0.030	≤0.030	0.15-0.25

 

Features:

with higher hardenability, non-temper brittleness, very good weldability, forming a small tendency to cold cracking;a good cutting performance and cold response plasticity

 

Applications:

usually being used at the quenched and tempered or case hardening state,for the manufacture of non-corrosive media and working temperature below 250 , the medium containing a mixture of nitrogen and hydrogen in the work of a variety of high-pressure pipes and fasteners, the higher the infiltration carbon components, such as gears, shafts and so on