National Tolerance Standards for 5MM Thick Stainless Steel Plates

What is the National Standard Tolerance for 5mm Thick Stainless Steel Plate and What is the Actual Thickness?

According to the national standard, the actual thickness of a 5mm thick stainless steel plate is typically less than 5mm and more accurately falls within a range of 4.5mm to 5.2mm.

GB/T24511-2017, the national standard for Stainless Steel and Heat Resisting Steel Plates and Strips for Pressure Equipment, provides specifications for the thickness error range of 5mm stainless steel plates. These plates can be divided into hot-rolled steel plates and strips, or cold-rolled steel plates and strips.

The error of 5mm of the non inductive steel plate is as follows:

Allowable thickness deviation of hot rolled steel plate and strip
According to national standard (G5/T24,511-2017)

National standard for actual thickness of 5mm thick stainless steel plate Accuracy class Width range (mm)
≤1200 >1200~1500 >1500~1800 >1800~2100
PT.A +0.31
-0.30
+0.33
-0.30
+0.36
-0.30
+0.38
-0.30
PT.B ±0.28 ±0.30 +0.33
-0.30
+0.35
-0.30

Note:

  • PT. A refers to ordinary precision, while PT. B refers to higher precision.
  • For instance, according to PT. A, the tolerance range for a 5mm thick hot-rolled stainless steel plate with a width of 1.5 meters should be between 4.7mm and 5.33mm. According to PT. B, the tolerance range should be between 4.7mm and 5.3mm.

Allowable thickness deviation of cold rolled steel plate and strip
According to national standard GB/T24511-2017

National standard for actual thickness of 5mm thick stainless steel plate   Width range (mm)
≤1000 >1000~1300 >1300~2100
Accuracy ±0.14 ±0.15 ±0.15

2. According to GB/T4237-2015 Hot Rolled Stainless Steel Plate and Strip, 5mm stainless steel plate can be divided into thick steel plate, steel strip and coiled steel plate, as follows:

Allowable thickness deviation of thick steel plate
According to the national standard GB/T4237-2015

5mm thick stainless steel plate Accuracy class Width range (mm)
1000 >1000~1500 >1500~2000 >2000~2500 >2500~4800
National standard for actual thickness PT.A ±0.31 ±0.33 ±0.36 ±0.41 ±0.65
PT.B ±0.28 ±0.30 ±0.34 ±0.36

Note:

  • PT. A refers to ordinary precision and PT. B refers to higher precision, in compliance with GB/T4237-2015.
  • As an example, a 5mm thick hot-rolled stainless steel plate with a width of 2 meters should have a thickness range of 4.64mm to 5.36mm according to PT. A requirements, and a thickness range of 4.66mm to 5.34mm according to PT. B requirements.

Allowable thickness deviation of steel strip and rolled steel plate
According to national standard GB/T4237-2015

National standard for actual thickness of 5mm thick stainless steel strip Accuracy class Width range (mm)
1200 >1200~1500 >1500~1800 1800~2500
PT.A ±0.33 ±0.33 ±0.36 ±0.38
PT.B ±0.31 ±0.30 ±0.33 ±0.35

Note:

  • PT. A refers to ordinary precision and PT. B refers to higher precision, both in accordance with GB/T4237-2015.
  • As an example, a 5mm thick hot-rolled stainless steel strip with a width of 1.5 meters should have a thickness range of 4.67mm to 5.33mm according to PT. A requirements, and a thickness range of 4.7mm to 5.3mm according to PT. B requirements.
  • GB/T3280-2015, the national standard for Cold Rolled Stainless Steel Plates and Strips, divides 5mm stainless steel plates into two categories: steel strips and rolled steel plates.

Allowable thickness deviation of wide steel strip and rolled steel plate
According to national standard GB/T3280-2015

National standard for actual thickness of 5mm thick stainless steel plate and strip   Width range (mm)
<1250 1250-2100
Accuracy requirements ±0.4 ±0.45

Note:

  • Based on GB/T3280-2015, the national standard for Cold Rolled Stainless Steel Plates and Strips.
  • For instance, the national standard tolerance for a 5mm thick cold-rolled wide stainless steel strip with a width of 1.5 meters, a rolled steel plate, a longitudinal wide steel strip, or a rolled steel strip should be between 4.55mm and 5.45mm.

Example: What is the National Standard Tolerance for 5mm Thick 304 Plate?

When the width of the steel plate is 1500mm, the standard deviation of 5mm thick hot-rolled steel plate should be within -0.3mm, meaning the thickness should be no less than 4.7mm, in accordance with GB/T24511-2017, the national standard for Stainless Steel and Heat Resistant Steel Plates and Strips for Pressure Equipment.

For a 5mm thick cold-rolled steel plate with a width of 1500mm, the standard deviation should be within -0.15mm, meaning the thickness should be no less than 4.85mm. This is also in compliance with GB/T24511-2017.

It is important to note that the actual thickness of a 5mm thick steel plate should conform to the tolerance provisions specified by the relevant national standards, as outlined above.

Don't forget, sharing is caring! : )
Shane
Author

Shane

Founder of MachineMFG

As the founder of MachineMFG, I have dedicated over a decade of my career to the metalworking industry. My extensive experience has allowed me to become an expert in the fields of sheet metal fabrication, machining, mechanical engineering, and machine tools for metals. I am constantly thinking, reading, and writing about these subjects, constantly striving to stay at the forefront of my field. Let my knowledge and expertise be an asset to your business.

Up Next

Mastering CAD/CAM: Essential Technologies Explained

Basic Concepts of Computer-Aided Design and Computer-Aided Manufacturing Computer-aided design and computer-aided manufacturing (CAD/CAM) is a comprehensive and technically complex system engineering discipline that incorporates diverse fields such as computer [...]

Virtual Manufacturing Explained: Concepts & Principles

Concept of Virtual Manufacturing Virtual Manufacturing (VM) is the fundamental realization of the actual manufacturing process on a computer. It utilizes computer simulation and virtual reality technologies, supported by high-performance [...]

Understanding Flexible Manufacturing Systems: A Guide

A Flexible Manufacturing System (FMS) typically employs principles of systems engineering and group technology. It connects Computer Numerical Control (CNC) machine tools (processing centers), coordinate measuring machines, material transport systems, [...]

Exploring 4 Cutting-Edge Nanofabrication Techniques

Just as manufacturing technology plays a crucial role in various fields today, nanofabrication technology holds a key position in the realms of nanotechnology. Nanofabrication technology encompasses numerous methods including mechanical [...]

Ultra-Precision Machining: Types and Techniques

Ultra-precision machining refers to precision manufacturing processes that achieve extremely high levels of accuracy and surface quality. Its definition is relative, changing with technological advancements. Currently, this technique can achieve [...]

Exploring High-Speed Cutting: Tech Overview & Application

Cutting machining remains the most prominent method of mechanical processing, holding a significant role in mechanical manufacturing. With the advancement of manufacturing technology, cutting machining technology underwent substantial progress towards [...]

Top 7 New Engineering Materials: What You Need to Know

Advanced materials refer to those recently researched or under development that possess exceptional performance and special functionalities. These materials are of paramount significance to the advancement of science and technology, [...]

Metal Expansion Methods: A Comprehensive Guide

Bulge forming is suitable for various types of blanks, such as deep-drawn cups, cut tubes, and rolled conical weldments. Classification by bulge forming medium Bulge forming methods can be categorized [...]
MachineMFG
Take your business to the next level
Subscribe to our newsletter
The latest news, articles, and resources, sent to your inbox weekly.
© 2024. All rights reserved.

Contact Us

You will get our reply within 24 hours.