20NiCrMo2/20NiCrMo2-2/21CrNiMo2/1.6523 round steel
bar
Diameter: φ250-φ650
Length:Specific or random length(Straightness:max
3mm/M )
Process:EAF+LF+VD+Forged+Heat treatment
Chemical Composition:
|
Grade
|
No.
|
C
|
Si
|
Mn
|
P,max
|
S,max
|
Cr
|
Mo
|
Ni
|
|
20NiCrMo2
|
1.6523
|
0.17-
0.23
|
0.15-
0.4
|
0.6-
0.9
|
0.035
|
0.035
|
0.35-0.65
|
0.15-
0.25
|
0.4-0.7
|
|
20NiCrMo2-2
|
1.6523
|
0.17-
0.23
|
0.4
max
|
0.65-
0.95
|
/
|
0.02-
0.04
|
0.35-0.7
|
0.15-
0.25
|
0.4-0.7
|
Delivery Condition:Black surface/Rough
machined or as request
Heat Treatment:Normalized/Annealed/Quenched/Tempered
Technical Data:According to the customer’s
requirement of chemical composition,physical properties and mechanical testing
Test:Ultrasonic test according to
SEP1921-84 Class C/c and D/d
Certificate of Quality:Production
process,the mechanical property
(yield strength,tensile strength,elongation
and hardness),forged ratio,UT test result,grain size,heat treatment methods and
the sample of is shown on the certificate of quality
Mark:Grade,Heat No.,Length,Weight will be
stamped one each bar with required color
Payment: 30% advance by T/T or 100%
irrevocable L/C |
