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Carbon Steel Coil

  • Chemical Compoosition
Steel Grade
SAE1078(Posco POS1081)
C
0.72 ~ 0.85
P
Max.0.03
Mn
0.30 ~ 0.60
S
Max.0.05
Si
0.10 ~ 0.30
Cr
Max.0.15
  • Classification
Commodity
Application
Texture Steel Strip
Electrical Appliance : Coed Retractor Spring
Automobile : Spring for saftety belts
  • Mechanical Qualite
Microstruture
Fine lamellar sorbitic structure with special rolling texrure
Surface
Bright finish with cold rolling
Camber
Max. 3mm / 1000mm
Flatness
Max. 0.8% of the thickness
Edge
Slit edge
Inside Diameter
300mm ~ 400mm
Width
7mm ~ 10mm, 146mm, 292mm
Thickness Tolerances
0.30mm
± 0.007mm
± 0.273mm
± 0.007mm
± 0.26mm
± 0.005mm
± 0.243mm
± 0.005mm
± 0.223mm
± 0.005mm
± 0.19mm
± 0.004mm
± 0.18mm
± 0.004mm
± 0.165mm
± 0.004mm
Thickness (mm)
Tensile Strength (N/mm2)
Hardness
0.30mm
2000~2200
>=HV500~520
0.273mm
2050~2250
>=HV510~530
0.26mm
2050~2250
>=HV510~530
0.243mm
2050~2250
>=HV510~530
0.223mm
2050~2250
>=HV510~530
0.19mm
2200~2450
>=HV520~540
0.18mm
2200~2450
>=HV520~540
0.165mm
2200~2450
>=HV520~540

Carbon Steel Strip

  • Spring Width : 4mm ~ 300mm
  • Spring Thickness : 0.0.mm ~ 2.5mm
  • Material : SAE1078(Posco POS1081)
  • Life Time : 500,000 Times
  • Durability Rotation Test : Over 300,000 Times
  • Salt Spray Test : Over 200,000 Times
  • Hardness : Customizes
  • Coil Inner Diameter : 300mm standard
  • Coil Outer Diameter : 750mm – 900mm standard

Seatbelt Spring Assembly

  • Spring Width : 4mm ~ 300mm
  • Spring Thickness : 0.0.mm ~ 2.5mm
  • Material : SAE1078(Posco POS1081)
  • Life Time : 500,000 Times
  • Durability Rotation Test : Over 300,000 Times
  • Salt Spray Test : Over 200,000 Times
  • Hardness : Customizes