|
Alloy Construction
Steels
During the last fifty years, engineers have
demanded steels with higher and higher tensile strength, together with
adequate ductility. This has been particularly so where lightness is desirable,
as in the automobile and aircraft industries. The principal alloying elements
added to steel in widely varying amounts either singly or in complex mixtures
are nickel, chromium, manganese, molybdenum, vanadium, silicon and cobalt.
In regard to alloying elements, these steels are known as low-alloyed
steels and alloyed steels. These steels are used as case hardening steels,
quenched & tempered steels, free-cutting steels, nitriding steels,
surface hardening steels, spring steels and high-strength steels. Alloyed
steels contain carbon and a higher amount of alloying elements such as
nickel, chromium, manganese, cobalt, niobium and vanadium. These elements
are added to improve mechanical properties, ductility and other steel
service properties.
The properties of this category steel are:
Grades
|
Average Chemical
Compositon %
|
Ravne
|
SIJ Brand
|
Werk No.
|
Aisi No.
|
C.
|
Si.
|
Mn.
|
Cr.
|
Mo.
|
V.
|
W.
|
Co.
|
Oths.
|
VCMO140 |
SIQUAL 7225 |
1.7225 |
4140 /
4142 |
0.40 |
0.40 |
0.7 |
1.0 |
0.2 |
|
|
|
|
Applications
: Statically &
dynamically stressed components for vechicles, engines & machines.
For parts of larger cross- sections, crankshafts, gears. Hardness
as surface hardened is > 54 HRC. Click
here for PDF File. |
|
Average Chemical
Compositon %
|
Ravne
|
SIJ Brand
|
Werk No.
|
Aisi No.
|
C.
|
Si.
|
Mn.
|
Cr.
|
Mo.
|
V.
|
W.
|
Co.
|
Oths.
|
VCNMO150 |
SIQUAL 6582 |
1.6582 |
4337 /
4340 |
0.35 |
0.4 |
1.6 |
1.35 |
0.2 |
|
|
|
Ni 1.35 |
Applications
: Permanently
stressed machine, engine & vechicle parts when high strength &
toughness are required. Click
here for PDF File. |
Grades
|
Average Chemical
Compositon %
|
Ravne
|
SIJ Brand
|
Werk No.
|
Aisi No.
|
C.
|
Si.
|
Mn.
|
Cr.
|
Mo.
|
V.
|
W.
|
Co.
|
Oths.
|
OCR4ES |
SIQUAL 3505 |
1.3505 |
52100 |
0.95 |
0.25 |
0.30 |
1.40 |
|
|
|
|
Ni 0.30 |
Applications
: Balls, rollers
& rings for roller bearings, diameter 30 mm. |
Next > SERVICES
|
|





 
|
|