We Produce the below hot rolled and hot forged 4140 4340 alloy steel bar.
Specifications
1. Standards: AISI 4340 8620 8640 4320 , JIS SNCM8 GB:40CrNiMoA
2. Specification: Dia: 80~450mm Length:2000-13000mm or as required
3. Process: EAF+LF+VD ( necessary) UT+ Peeled +Turned + Heat Treatment (optional)
Machine Capability
1. Tensile strength (N/mm2Mpa): >=980(100)
2. Elongation: >=12
3. Yield strength: >=835(85)
4. Hardness:( HBS 100/3000)<=269
5. Reduction of area:>=55
Chemical Composition (%)
|
C
|
Si
|
Mn
|
S |
P |
Cr
|
Ni
|
Cu |
Mo |
|
0.37-0.44
|
0.17-0.37
|
0.40-0.80
|
0.025(max) |
0.025(max) |
0.60-0.90
|
1.25-1.65
|
0.025(max) |
0.15-0.25 |
Inspection: 100% Ultrasonic according to the test standards:SEP1921-84,GR.3 CLASS C/C.
