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Spring
Steel Wire Rod
There are two types of spring steels: coil spring
and torsion bar produced through hot forming and used
for automobile suspension system; and wire spring made
by cold forming and used for electronics, precision machinery
and furniture. Wire rod for springs must have high elasticity
limits to prevent plastic deformation. It must also possess
defect-free surface to ensure high fatigue limits and
good dimensional precision for improved operation. The
main usage is for coil springs and stabilizer bars.
 JIS:
SUP 3, 6, 7, 8, 9A, 10, 11A, 12, 13
SAE:
SAE9254, 9260
DIN
: 50CrV4, 55Cr3 |
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Wire
Rod for Bearing Steel
To withstand repeated loads and high-speed
rotations during operation, bearing steel requires a high
degree of durability. This type of steel is used in a
variety of industrial machine parts, including ball bearings
and ring bearings.
JIS
: SUJ 1-5
SAE:
SAE52100 |
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Carbon
Steel Wire Rod for Cold Heading and Cold Forging
Wire rod for cold heading quality is cold headed,
forged or extruded to make bolts, nuts or screws used
widely in automobile parts and industrial machines. This
steel requires strict quality control because the steel
is placed under severe working conditions and used for
special purposes. Therefore it should be handled with
utmost care to prevent surface flaws.
POSCO:
CH6ASP
JIS:
SWRCH 6A-22A, 10K-50K
SAE:
SAE 1006-1050
DIN:
DIN 1654 |
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Piano
Wire Rod
Often used in high strength bead wire, LR PC steel wire
and music wire, this type of rod is made from high-carbon
steels with excellent filamentary drawability, high strength
and fatigue resistance.
| JIS:
SWRS 62-92A/B |
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Wire
Rod for Tire Cord
Manufactured through drawing (0.4-0.15mm ) and cording
of high carbon steel wire rods, steel cord is used to
reinforce the durability of automobile tires. This wire
rod type requires particularly clean and high-strength
steel.
POSCO:
POSCORD 70, 70S, 80
ASTM
: AISI1069, 1080 |
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Wire
Rod for High Strength Steel
This PC bar type steel is used in reinforcing
the concrete in telegraph poles and piles. Structural
carbon steel containing traces of boron, or a large amount
of silicon, undergoes high-frequency heat treatment to
produce this type of wire rods. Compared with mild steel,
this steel type has higher elastic limits and lower relaxation.
POSCO:
PSPC30B~35B, PSPC30Si-35Si
SAE:
SAE10B30-35
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High
Carbon Wire Rod Steel
High carbon steel products require the micro-structure
of fine pearlite to maintain its high strength and to
ensure its wire drawability. This steel is used in wire
ropes, precision springs, bead wires and general PC steel
wires.
JIS:
SWRH27-72
SAE:
SAE 1026-1095
DIN:
D26-2, 95-2
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Free-Cutting
Carbon Steel
With an addition of such free-cutting elements
as P, Pb, Bi and S, this steel type is used in precision
parts of automobiles and home appliances.
POSCO:
POSCUT1A
JIS:
SUM11-43
SAE:
SAE1215, 1146, 1151
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Wire
Rod for Core Wire of Covered Electrodes
Precise component control is required to ensure
weldability and deposit metal quality. The wire rod slow
cooling operation as well as the TS deviation control
are carried out to guarantee rod drawability. The rods
are used for CO2 gas-shielded arc welding wire, submerged
arc welding wire and general electrodes.
POSCO:
POSWELD1A, B, POSWELD 2A, B, C, POSWELD 3D, 4D,
5D
JIS:
SWRY 11-21, YSW11-41, YGW11-24
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Low Carbon
Steel Wire Rod
This type of wire rod is made of low-carbon steel with
carbon content under 0.22%. It is used in manufacturing
various kinds of steel wires, nails and wire entanglement.
JIS:
SWRM6-22
SAE:
SAE1006-1022
DIN:
D5-1, D9-1
ASTM:
A510
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Alloy
Steel Wire Rod for Machine Structural Use
This steel is mainly used for the joints of mechanical
parts, such as high-strength bolts and nuts. It is also
used for the delivery of driving force. It is a high strength
steel with an addition of such alloy elements as chromium,
nickel and molybdenum.
JIS:
SCr415-445, SCM415-822, SNCM220-815, SMn420-443,
SMnC420-: : 443, SNC236-836
SAE:
SAE1513-1548, 4118-4161, 5115-5145, 8620-8645
ASTM:
A274
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