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Home » Product » JIS spring steel » HOT ROLLED JIS SUP11A SPRING STEEL FLAT BAR-Japanese Steel Material Grade

HOT ROLLED JIS SUP11A SPRING STEEL FLAT BAR-Japanese Steel Material Grade

JIS SUP11A SPRING STEEL FLAT BAR

JIS SUP11A SPRING STEEL FLAT BAR requires higher strength and fatigue limit, usage in the condition of quenching + medium-temperature tempering, then it can get higher elastic limit. Process engineering of heat treatment is very important to inherent quality of HOT ROLLED JIS SUP11A SPRING STEEL FLAT BAR.

JIS SUP11A SPRING STEEL FLAT BAR requires higher strength and fatigue limit, usage in the condition of quenching + medium-temperature tempering, then it can get higher elastic limit. Process engineering of heat treatment is very important to inherent quality of HOT ROLLED JIS SUP11A SPRING STEEL FLAT BAR.

 

Chemical composition

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

 

Cr Ni
JIS SUP11A 0.56-0.64 0.15-0.35 0.70-1.00 ≤0.030 ≤0.030 0.70-1.00

 

Available Size

Thickness: 5mm-115mm

width50mm-250mm

JIS SUP11A SPRING STEEL FLAT BAR

 

Available Heat Treatment

Annealing/Normalizing/Hardening/Tempering/Quenching

Quenching temperature: 830℃-860℃, oil cooling

Tempering temperature: 460℃-520℃

 

Characteristics

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

 HOT ROLLED JIS SUP11A SPRING STEEL FLAT BAR

 

Application

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

 

Delivery Condition

Hot rolled, black surface

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