EN10083 C22 C25 C30 C35 Prime Quality Carbon Steel Plate

Product Overview

EN10083 C22 C25 C30 C35 Chemical Composition and Technical Property is as below:

Key Product Features

• Prime Surface Quality: Strictly controlled surface condition ensures freedom from defects that would interfere with welding, forming, or machining.
• Superior Weldability: Low carbon content and controlled carbon equivalent allow welding without preheating in most gauges, reducing fabrication costs.
• Excellent Cold Formability: C22 and C25 grades bend, roll, and stamp easily; ideal for cold-formed structural sections and deep-drawn applications.
• Versatile Heat Treatment Response: C22 and C25 respond well to carburizing and surface hardening; C30 and C35 are suitable for through-hardening by quenching and tempering.
• Consistent Machinability: Predictable chip formation and good tool life across all grades when machined in the normalized condition.
• Full Traceability: Every plate is heat-marked and supported by complete mill test certificates.

Packaging, Marking & Shipping

• Marking: Waterproof stenciling with grade, heat number, dimensions, and weight; metal tags for long-term outdoor storage.
• Packaging: Steel-strapped bare bundles; wooden or metal skids for thin plates; VCI paper or oil coating for rust prevention.
• Shipping: Ex-works, FOB, CIF, or DDP; containerized or break-bulk for ocean freight.

FAQ

Q: What is the difference between C22, C25, C30, and C35?

A: The primary difference is carbon content, which increases from 0.17–0.24 % (C22) to 0.32–0.39 % (C35). Higher carbon provides greater strength and hardness but slightly reduces weldability and cold formability. C22 and C25 are preferred for welded assemblies and carburized parts; C30 and C35 are chosen for higher-strength shafts, gears, and hardware requiring quenching and tempering.

Q: What does "prime quality" mean for these carbon steel plates?

A: Prime quality indicates strict surface and dimensional control. The plates are free from cracks, seams, heavy scale, and laminations that would impair welding, forming, or machining. Prime plates are suitable for applications requiring reliable downstream processing and consistent cosmetic appearance.

Q: What delivery conditions do you offer?

A: We supply these grades in as-rolled (AR), normalized (N), quenched and tempered (QT), and cold-drawn (CD) conditions. AR and N are standard for general fabrication. QT is recommended when higher strength and hardness are required directly from delivery. CD condition provides improved surface finish and tighter dimensional tolerances for precision machining.

Q: What is the minimum order quantity and lead time?

A: For standard sizes, the MOQ is typically 1 ton per size. For non-standard dimensions or QT processing, 5–10 tons is preferred. Lead time is generally 7–15 days for stock items and 20–40 days for new rolling or heat treatment. Exact schedules are confirmed upon order acknowledgment.