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Home » Product » ASTM/AISI/SAE spring steel » HOT ROLLED ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR-American Steel Material Grade

HOT ROLLED ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR-American Steel Material Grade

ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR

ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR mainly sued for the hot formed springs such as the laminated springs, coiled springs and torsion bar springs.

ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR mainly sued for the hot formed springs such as the laminated springs, coiled springs and torsion bar springs.

 

Chemical composition

Standard Grade Chemical composition (%)
C Si Mn P S

 

Cr Ni
GB 55CrMnA 0.52-0.60 0.17-0.37 0.65-0.95 ≤0.025 ≤0.025 0.65-0.95 ≤0.35
JIS SUP9 0.52-0.60 0.15-0.35 0.65-0.95 ≤0.030 ≤0.030 0.65-0.95
DIN 55Cr3/1.7176 0.52-0.59 ≤0.40 0.70-1.00 ≤0.025 ≤0.025 0.70-1.00

 

Available Size

Thickness: 5mm-115mm

width50mm-250mm

ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR

 

Available Heat Treatment

Annealing/Normalizing/Hardening/Tempering/Quenching

Quenching temperature: 830℃-860℃, oil cooling

Tempering temperature: 460℃-510℃

 

Characteristics

  1. High strength.
  2. High hardenability.
  3. High plasticity and toughness.

 

Application

Large spring under heavy load and high stress condition, like large-section leaf spring and large- diameter sprial spring of automobile and tractors.

ASTM/ASE/AISI 5155 SPRING STEEL FLAT BAR

 

Delivery Condition

Hot rolled, black surface

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