C45 C50 Cold-Rolled Carbon Steel Strip Inquiry – Custom Thickness and HV140–650 Hardness Scope

• Grade

  Carbon Steel Strip, C67S SK85 51CrV4 75Cr1 SK5 SK4 SK2
  Steel Grade

  Q235B
• Tolerance

  ±1%
  Application

  Construction industry, metal parts, tool parts, auto parts, saws
• Length

  Customized
  Standard

  ASTM
• Surface Treatment

  Polished
  Technique

  Cold Rolled
• Width

  Customized, customize
  Thickness

  0.07-7.50
• Certificate

  RoHS, ISO 9001
  Delivery Time

  15-21 days
• Package

  Standard Sea Worthy Package
  CERTIFICATE

  ISO9001/16949
• Hardness

  HV 140-650
  Surface finish

  Grey Blue Polished

Cold-rolled carbon strip has one actual thickness option: Customized. The C45/C50 and0.50–5.0mm title requirements need an actual grade and dimensional specification.

Select composition and thickness

C67S/SK85/51CrV4/75Cr1/SK5/SK4/SK2 and Q235B are family references, not equivalent grades. The body thickness0.07–7.50 has no stated field unit and requires confirmation.

• Carbon Steel Strip identity.
• Cold-rolled technique.
• Customized width.
• Customized length.
• Grey/blue/polished surface references.

Define the hardness condition

HV140–650 is a family reference, not a measured result for every grade. Soft title wording needs an agreed target, test method and supplied heat-treatment condition.

Request fabrication evidence

Provide forming and cutting requirements. Roofing, saw and automotive contexts do not establish fatigue life, strength or certified finished-component performance without selected-material tests.