Six Common Metal Sheets Explained: Hot Rolled vs Cold Rolled vs Galvanized vs Stainless Steel vs Aluminum Guide

In-depth Analysis of Six Common Metal Sheets: Hot Rolled, Pickled, Cold Rolled, Galvanized, Stainless Steel & Aluminum Plate – Differences, Properties and Selection Guide

In modern manufacturing, choosing the right material is one of the most critical decisions that directly impacts product quality, durability, cost, and performance.

At Shenzhen E-booming Industrial Co., Ltd, we specialize inaluminum enclosure aluminum enclosures, plastic housings, LED cabinets, power supply housings, and sheet metal chassis. With years of experience in CNC machining and sheet metal fabrication, we help global customers select the most suitable materials for their applications.

This comprehensive guide will walk you through the six most commonly used metal sheet materials:

• Hot Rolled Steel

• Pickled Steel
• Cold Rolled Steel
• Galvanized Steel
• Stainless Steel
• Aluminum Plate

We will compare their properties, advantages, disadvantages, applications, and selection strategies, helping you make informed decisions for your next project.

Keywords: hot rolled steel sheet, low-cost steel material, structural steel

Hot rolled steel is processed at high temperature, making it easy to shape and cost-effective.

Properties:

• Rough surface finish
• Lower dimensional accuracy
• Good weldability
• High strength

Applications:

• Structural parts
• Industrial frames
• Heavy-duty sheet metal chassis

Best for: Projects where cost matters more than appearance

2. Pickled Steel (Acid Pickled Steel)

Keywords: pickled steel sheet, descaled steel, clean surface steel

Pickled steel is hot rolled steel treated with acid to remove oxide scale.

Properties:

• Cleaner and smoother surface than HR
• Improved corrosion resistance (short-term)
• Better for coating and painting

Applications:

• Powder coating parts
• Electrical enclosures
• Automotive components

Best for: When you need better surface quality than hot rolled steel

3. Cold Rolled Steel (CR Steel)

Keywords: cold rolled steel sheet, precision steel, high surface finish metal

Cold rolled steel is processed at room temperature for higher precision.

Properties:

• Smooth surface finish
• High dimensional accuracy
• Good strength and hardness
• Ideal for bending and stamping

Applications:

• Precision sheet metal chassis
• Electronic enclosures
• Appliance housings

Best for: High-precision CNC machining and sheet metal fabrication

4. Galvanized Steel (GI / SGCC)

Keywords: galvanized steel sheet, anti-rust steel, zinc coated steel

Galvanized steel is coated with zinc to prevent corrosion.

Properties:

• Excellent corrosion resistance
• Long service life
• Moderate cost
• Good formability

Applications:

• Outdoor enclosures
• Power supply housings
• Telecom cabinets
• LED cabinets

Best for: Products requiring anti-rust protection in humid or outdoor environments

5. Stainless Steel (SS 201 / 304 / 316)

Keywords: stainless steel sheet, corrosion resistant metal, food-grade steel

Stainless steel offers excellent corrosion resistance and durability.

Properties:

• Strong corrosion resistance
• High strength
• Premium appearance
• Difficult machining (compared to mild steel)

Applications:

• Food equipment housings
• Medical devices
• High-end enclosures
• Outdoor equipment

Best for: Harsh environments or high-end products

6. Aluminum Plate (Aluminum Sheet)

Keywords: aluminum sheet, lightweight metal, CNC aluminum machining, aluminum enclosure

Aluminum is one of the most widely used materials in modern manufacturing.

Properties:

• Lightweight
• Excellent corrosion resistance
• Good thermal conductivity
• Easy CNC machining
• Supports anodizing, sandblasting, brushing

Applications:

• Aluminum enclosures
• Heat sinks
• LED housings
• Electronic device casings

Best for: Lightweight, high-performance, and aesthetic products

Material Comparison Summary

How to Choose the Right Metal Sheet?

When selecting materials for your CNC machining parts or sheet metal enclosures, consider:

1. Environment

• Outdoor → Galvanized steel / Stainless steel / Aluminum
• Indoor → Cold rolled steel / Aluminum

2. Appearance

• High-end → Stainless steel / Aluminum
• Industrial → Hot rolled / Pickled steel

3. Weight

• Lightweight → Aluminum
• Heavy-duty → Steel

4. Budget

• Low cost → Hot rolled / Pickled steel
• Mid-range → Cold rolled / Galvanized
• Premium → Stainless steel / Aluminum

Conclusion

Each material has its own strengths and ideal applications. Selecting the right one can significantly improve product performance, reduce cost, and enhance durability.

At Shenzhen E-booming Industrial Co., Ltd, we provide expert support in:

• CNC machining parts
• Aluminum enclosures
• Sheet metal chassis fabrication
• Custom power supply housings

👉 Contact us today to get professional material recommendations and competitive quotations for your project.