4mm Stainless Plate

あ 4mmステンレス鋼板 is typically classified as 熱間圧延 (人事部) rather than cold rolled (cr).

• In industry practice, cold rolled stainless steel is mainly used for thin sheets
• Hot rolled stainless steel is used for medium to thick plates, including 4mm and above

Minimum Thickness of Hot Rolled Stainless Steel

Hot rolling is suitable for thicker materials, but modern rolling technology can achieve relatively thin gauges.

Typical Hot Rolled Thickness Range

キーポイント

• の minimum thickness of hot rolled stainless steel is حوالي 3.0 mm
• Below this thickness, it becomes difficult to control surface quality and dimensional accuracy

結論:
あ 4mm stainless plate is within the standard hot rolled range, close to the lower limit of hot rolling.

Maximum Thickness of Cold Rolled Stainless Steel

Cold rolling is designed for precision thin materials, but it also has an upper thickness limit.

Typical Cold Rolled Thickness Range

キーポイント

• の maximum thickness of cold rolled stainless steel is generally around 3.0 mm
• In some advanced mills, it may reach まで 4.0 mm, but this is uncommon and less economical

Why These Limits Exist

Hot Rolling Limitations

• At high temperatures, controlling flatness and surface quality becomes difficult for very thin sheets
• Oxide scale formation affects surface finish

Cold Rolling Limitations

• Requires high rolling force → difficult for thick materials
• Equipment and cost constraints limit thickness
• Increased internal stress in thicker cold rolled sheets

Hot Rolled vs Cold Rolled for 4mm Plate

Practical Recommendation

• 4mm stainless plate is almost always hot rolled
• If a smooth surface is required:
  • 使用 酸洗い + 研削
  • Or process from thicker hot rolled plate and finish mechanically